Journal articles: 'Zinc Magnesium Oxide'

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T.Ch.Taghiyeva, T. Ch Taghiyeva. "X-RAY DIFFRACTION STUDY OF BINARY ZINC-OXIDE CATALYSTS." Azerbaijan Journal of Chemical News 04, no. 01 (May 30, 2022): 60–64. http://dx.doi.org/10.32010/ajcn5012022-60.

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The phase composition of binary zinc-containing catalysts was studied by X-ray diffraction. It was found that the formation of two phases of the initial oxides is observed in all the studied catalytic systems. So, samples of the Zr-Zn-O catalytic system consist of phases of zirconium and zinc oxides, samples of the Ce-Zn-O catalytic system consist of phases of cerium and zinc oxides, while samples of the Mg-Zn-O catalytic system consist of phases of magnesium and zinc oxides. It has been established that the crystallinity of binary zinc-containing catalysts varies in the range from 70% to 89%. Keywords: X-ray phase analysis, binary catalysts, zinc oxide, cerium oxide, zirconium oxide, magnesium oxide

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Lu, Dongzhu, Yanliang Huang, Jizhou Duan, and Baorong Hou. "A Zinc-Rich Coating Fabricated on a Magnesium Alloy by Oxide Reduction." Coatings 9, no. 4 (April 25, 2019): 278. http://dx.doi.org/10.3390/coatings9040278.

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The corrosion resistance of magnesium alloys could be enhanced by covering metallic coatings on the surface. The zinc-rich coating is one of these metallic coatings. To fabricate a zinc-rich coating on magnesium alloys, the substrate should be pretreated carefully, and a protective atmosphere is usually required. In this research, a zinc-rich coating was successfully fabricated on the AZ91D magnesium alloy in air by a diffusion alloying method, with zinc oxide as the zinc source. At the same time, the pretreatment of the magnesium alloy matrix was greatly simplified. The as-diffusion-alloyed zinc-rich intermetallic layer was investigated, utilizing SEM, EDS, and XRD, respectively. It is inferred that zinc oxide was reduced into Zn atoms by the active Mg atoms, and the Mg atoms were coming from the magnesium alloy matrix. Then the Zn atoms passed through the oxide film and formed an intermetallic layer on the magnesium alloy surface. Thus, taking advantage of the activity of Mg atoms, magnesium alloys could be surface alloyed with oxides.

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Hsu, Yu-Ting, Che-Chi Lee, Wen-How Lan, Kai-Feng Huang, Kuo-Jen Chang, Jia-Ching Lin, Shao-Yi Lee, Wen-Jen Lin, Mu-Chun Wang, and Chien-Jung Huang. "Thickness Study of Er-Doped Magnesium Zinc Oxide Diode by Spray Pyrolysis." Crystals 8, no. 12 (December 6, 2018): 454. http://dx.doi.org/10.3390/cryst8120454.

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Erbium-doped magnesium zinc oxides were prepared through spray pyrolysis deposition at 450 °C with an aqueous solution containing magnesium nitrate, zinc acetate, erbium acetate, and indium nitrate precursors. Diodes with different erbium-doped magnesium zinc oxide thicknesses were fabricated. The effect of erbium-doped magnesium zinc oxide was investigated. The crystalline structure and surface morphology were analyzed using X-ray diffraction and scanning electron microscopy. The films exhibited a zinc oxide structure, with (002), (101), and (102) planes and tiny rods in a mixed hexagonal flakes surface morphology. With the photoluminescence analyses, defect states were identified. The diodes were fabricated via a metallization process in which the top contact was Au and the bottom contact was In. The current–voltage characteristics of these diodes were characterized. The structure resistance increased with the increase in erbium-doped magnesium zinc oxide thickness. With a reverse bias in excess of 8 V, the light spectrum, with two distinct green light emissions at wavelengths of 532 nm and 553 nm, was observed. The light intensity that resulted when using a different operation current of the diodes was investigated. The diode with an erbium-doped magnesium zinc oxide thickness of 230 nm shows high light intensity with an operational current of 80 mA. The emission spectrum with different injection currents for the diodes was characterized and the mechanism is discussed.

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Fayomi, Ojo Sunday Issac, Itopa Godwin Akande, and C. Ofo. "Investigation of Corrosion Resistance and Microstructural Performance of Zn-MgO-WB Composite Coating on Mild Steel." Key Engineering Materials 886 (May 2021): 159–67. http://dx.doi.org/10.4028/www.scientific.net/kem.886.159.

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This Paper investigated the corrosion resistance and microstructural performance of zinc-magnesium oxide-tungsten boride (Zn-MgO-WB) composite coating on mild steel. Tungsten boride as an additive was co-deposited with zinc-magnesium oxide on mild steel via electrolytic deposition. The zinc-magnesium oxide and zinc-magnesium oxide-tungsten boride composite coatings were fabricated at the voltage of 0.6 and 0.8 V for 15 minutes and 45 °C. The effects of the deposits on the corrosion properties were examined. The corrosion behaviour was studied using linear polarization and weight loss method in 3.5% NaCl simulated environment. From the results obtained, it is evident that a decrease in applied potential influences the deposition of the coatings. The alloys with tungsten boride in their bath mixture performed better than those without. The zinc-magnesium oxide-tungsten boride (0.8 V) composite coated sample exhibits the least corrosion rate (Cr) of 0.0010482 mm/year and the microstructural examination of the sample via scanning electron microscope (SEM) unveiled homogeneous dispersion of particles and smooth morphology. The smooth morphology, defect-free surface, coupled with the uniform dispersion of the zinc-magnesium oxide-tungsten boride nanoparticles on the steel surface could have been responsible for high corrosion resistance performance of the coating in the simulated 3.5% NaCl medium. More so, the energy dispersive spectroscopy (EDS) revealed the presence of zinc, magnesium oxide, tungsten boride particles.

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Guzmán, Manuel, Berta Vega, Núria Agulló, Ulrich Giese, and Salvador Borrós. "ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 1." Rubber Chemistry and Technology 85, no. 1 (March 1, 2012): 38–55. http://dx.doi.org/10.5254/1.3672428.

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Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as activator, and consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO on the vulcanization of natural rubber has been investigated. In Part 2, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in Part 1.

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Guzmán, Manuel, Berta Vega, Núria Agulló, and Salvador Borrós. "ZINC OXIDE VERSUS MAGNESIUM OXIDE REVISITED. PART 2." Rubber Chemistry and Technology 85, no. 1 (March 1, 2012): 56–67. http://dx.doi.org/10.5254/1.3672429.

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Abstract Zinc oxide is a widely used compound in the rubber industry due to the excellent properties that it shows as an activator and, consequently, its role in the mechanism of accelerated sulfur vulcanization has been extensively studied. Due to the increased concern about its environmental effects, several research studies have been carried out in order to substitute it with different metal oxides such us MgO. The effect of the activator system in order to minimize the environmental impact of the rubber goods has been explored. The work developed is presented in two parts. In Part 1, the influence of different mixtures of ZnO and MgO in the vulcanization of natural rubber has been investigated. In Part 2 of the study, model compound vulcanization has been used to study the role of MgO on the mechanism to gain a better understanding of the differences shown in the first part.

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Javadi, Seyyed Mohammad. "Applications of ZnO and MgO Nanoparticles in Reducing Zinc Pollution Level in Rubber Manufacturing Processes: A Review." Current Biochemical Engineering 6, no. 2 (July 25, 2020): 103–7. http://dx.doi.org/10.2174/2212711906666200224105931.

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Background: Rubber vulcanization is a consolidated chemical process to enhance the mechanical properties of the polymeric material by sulfur crosslinking of the polymer chains, such as rubber. Vulcanization Activators are important rubber processing additives that activate sulfur cure and improve the efficiency of sulfur-based cure systems. The most common activator is zinc fatty acid ester that is often formed in-situ by the reaction of fatty acid with zinc oxide. Although zinc is one of the less harmful heavy metals, according to European Council Directive 2004/73/EC, the reduction of zinc level in the environment has become an important task because of its toxic effect on aquatic organisms. : The current study reviews the research achievements in the field of reducing the consumption of micronutrients of ZnO particles based on the use of nanoparticles instead of them in the polymer industry. Among the proposed methods, due to the less environmental effects of magnesium oxide, the use of MgO nanoparticles instead of zinc oxide has also achieved good results. Objective: The aim of this paper is considering suggested different methods on the reduction of using ZnO particles in related industries, the use of ZnO nanoparticles has had better results than its particles. In addition, due to the less environmental effects of magnesium oxide, magnesium oxide nanoparticles can be used instead of micronutrients of zinc oxide. Overall, the results of various investigations show that reducing the diameter of the zinc oxide particles reduces the amount required for curing the rubber and thus reduces its toxic effects. Also, the use of magnesium oxide nanoparticles instead of zinc oxide in different concentrations is investigated.

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Francis, Santhanam, Ramachandran Saravanan, and Mohammed Açıkgöz. "Solubility Limit of Sol–Gel Grown Nano Zn1-xMgxO Through Charge Density Distribution." Zeitschrift für Naturforschung A 68, no. 10-11 (November 1, 2013): 668–76. http://dx.doi.org/10.5560/zna.2013-0043.

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The mixed oxides Zn1-xMgxO were prepared as polycrystalline powders with various compositions (x = 0:02, 0.04, 0.05, and 0.10) using sol-gel technique. X-ray diffractometer (XRD) was used to characterize the powders for structural and electronic properties. X-ray diffraction analysis reveals that all the prepared samples exhibit the single wurtzite phase of zinc oxide (ZnO), and magnesiumdoping does not induce any secondary phase in the samples. The Bragg peak positions in the XRD patterns are found to be shifted towards higher 2q values with more addition of magnesium in the zinc oxide lattice. Magnesium addition in the zinc oxide lattice is found to enhance the mid bond electron density distribution up to x = 0:05 and then decrease for x = 0:10. Evidence of host lattice as well as interstitial addition of Mg2+ ions has been realized for x = 0:10, through electron density analysis.

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Sarhan, Mohamed H., Shatha G. Felemban, Walla Alelwani, Hesham M. Sharaf, Yasmin A. Abd El-Latif, Elsayed Elgazzar, Ahmad M. Kandil, Guillermo Tellez-Isaias, and Aya A. Mohamed. "Zinc Oxide and Magnesium-Doped Zinc Oxide Nanoparticles Ameliorate Murine Chronic Toxoplasmosis." Pharmaceuticals 17, no. 1 (January 15, 2024): 113. http://dx.doi.org/10.3390/ph17010113.

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Toxoplasma gondii causes a global parasitic disease. Therapeutic options for eradicating toxoplasmosis are limited. In this study, ZnO and Mg-doped ZnO NPs were prepared, and their structural and morphological chrematistics were investigated. The XRD pattern revealed that Mg-doped ZnO NPs have weak crystallinity and a small crystallite size. FTIR and XPS analyses confirmed the integration of Mg ions into the ZnO framework, producing the high-purity Mg-doped ZnO nanocomposite. TEM micrographs determined the particle size of un-doped ZnO in the range of 29 nm, reduced to 23 nm with Mg2+ replacements. ZnO and Mg-doped ZnO NPs significantly decreased the number of brain cysts (p < 0.05) by 29.30% and 35.08%, respectively, compared to the infected untreated group. The administration of ZnO and Mg-doped ZnO NPs revealed a marked histopathological improvement in the brain, liver, and spleen. Furthermore, ZnO and Mg-doped ZnO NPs reduced P53 expression in the cerebral tissue while inducing CD31 expression, which indicated a protective effect against the infection-induced apoptosis and the restoration of balance between free radicals and antioxidant defense activity. In conclusion, the study proved these nanoparticles have antiparasitic, antiapoptotic, and angiogenetic effects. Being nontoxic compounds, these nanoparticles could be promising adjuvants in treating chronic toxoplasmosis.

10

Tai, I.-Po, Kuo-Chin Hsu, I.-Tseng Tang, Te-Hua Fang, Tsung-Chieh Cheng, Wei-Hao Wang, Mustufa Ali Ansari, and Chi-Jen Shi. "Characteristics and Application of Zinc Oxide/Magnesium Oxide Hybrids." Sensors and Materials 35, no. 3 (March 31, 2023): 1069. http://dx.doi.org/10.18494/sam4233.

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K, Rathidevi, Velmani N, and Tamilselvi D. "Electrical conductivity study of poly(p-anisidine) doped and undoped ZnO nanocomposite." Mediterranean Journal of Chemistry 9, no. 5 (December 14, 2019): 403–10. http://dx.doi.org/10.13171/mjc01912071050kr.

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Polymeric blends of Poly (p-anisidine) with ZnO nanoparticles was prepared by chemical oxidative polymerization. Zinc oxide doped PPA polymer nanocomposite (ZPPA) and Magnesium doped Zinc oxide PPA polymer nanocomposite (MZPPA) were synthesized with the addition of semiconductor metal oxide to the polymeric solution. The X-ray diffraction studies of ZnO nanoparticles showed hexagonal wurzite structure. The surface morphological study also confirms the formation of hexagonal structured nanoparticles. The peak for Magnesium and Zinc in EDS spectra confirms the formation of Magnesium doped polymer nanocomposite. The addition of ZnO/MgZnO onto PPA conducting polymer showed agglomeration of semiconductor material results in spherical shaped polymer nanocomposite and irregular overlapping over the PPA polymeric surface. The electrochemical conductivity studies suggested that the doped PPA conducting polymeric blends showed enhanced conductivity nature.

12

P., Sumithraj Premkumar. "Structural and electrical studies on zinc added magnesium oxide nanoparticles." Journal of Physical Science 31, no. 3 (November 25, 2020): 73–86. http://dx.doi.org/10.21315/jps2020.31.3.6.

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Magnesium oxide (MgO, pure) and zinc added MgO nanoparticles were synthesised by a simple microwave assisted solvothermal method. The concentrations of impurity used in the present work were 0.25 M and 0.50 M. All samples were annealed at 400°C for 1 h to improve the ordering. The prepared pure and zinc added magnesium oxide nanoparticles were characterised by powder X-ray diffraction (PXRD), energy dispersive spectroscopy (EDS) and scanning electron microscopy (SEM). PXRD studies of pure and zinc added MgO nanoparticles showed that all samples belong to crystalline nature with cubic structure. The grain size of all samples were determined from the XRD results and it belongs to nano meter scale. The EDS confirmed the presence of zinc, magnesium and oxide elements in the respective prepared samples. The scanning electron microscope images confirmed that the prepared samples possess nanometer dimensions. The electrical properties such as AC conductivity, dielectric constant and dielectric loss were measured at different temperatures in the different frequency range by involving the impedance analyser of all the prepared samples.

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Pi, Chun Lei, Tao Ma, Ming Ming Xie, Li Zhen Yang, and Hui Zhou. "Preparation of Doped ZnOs via Microwave and the Study of its Performance." Applied Mechanics and Materials 320 (May 2013): 446–50. http://dx.doi.org/10.4028/www.scientific.net/amm.320.446.

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This dissertation aims at the preparation of the Nanometer zinc oxide doping with different elements via the method of microwave. After characterizing those pellets of prepared Nanometer zinc oxide through XRD and SEM, it illustrates that the structure of Nanometer zinc oxide is still 6 wurtzite with high purity and the size of its pellet is at an averages of 21.83nm.But different mixed elements will differentiate the pellets' diameter. Moreover, through defined the Methyl orange as the stimulating pollutant, and conducted the Catalytic performance test of the samples. And the result shows that the effect was the best when doped with only Titanium, followed by doped with both Titanium and Magnesium, and the worst was doped with only Magnesium. Keywords: Microwave heating, ZnO, Dope, Degradation rate

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Ščajev, Patrik, Saulius Miasojedovas, Martyna Mazuronytė, Liuwen Chang, and Mitch M. C. Chou. "Magnesium zinc oxide detectors for fast ultraviolet detection." Journal of Applied Physics 132, no. 14 (October 14, 2022): 144501. http://dx.doi.org/10.1063/5.0108890.

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We explored a Mg-alloyed ZnO material (or MgZnO alloy) on a lattice-matched scandium aluminum magnesium oxide substrate for obtaining most effective photodetectors with highest (∼10 A/W) and fastest (up to 3 GHz) responses and two orders of magnitude UV/VIS rejection ratio. Device operation was related to its material electronic properties (carrier lifetime, diffusivity, and diffusion length) via photoluminescence and light-induced pump–probe techniques. Defect-related response is found suitable for sensitive logarithmic detectors, while exciton-related response is favorable to ultrafast linear UV solar blind detectors. Two-contact planar detector design allows their application in low-cost environmental detection systems.

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Cheng, Xi, Jianming Wu, Chenguang Yao, and Guisheng Yang. "Flame-retardant mechanism of zinc borate and magnesium hydroxide in aluminum hypophosphite–based combination for TPE-S composites." Journal of Fire Sciences 37, no. 3 (May 2019): 273–300. http://dx.doi.org/10.1177/0734904119851270.

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Aluminum hypophosphite combined with melamine cyanurate and poly(phenylene oxide) was applied to flame retard TPE-S system (blends of SEBS and polyolefin). TPE-S containing 16 wt% aluminum hypophosphite, 20 wt% melamine cyanurate, and 10 wt% poly(phenylene oxide) pass a V-0 rating in the UL-94 test and its limiting oxygen index value is 28.2%. Zinc borate and magnesium hydroxide were added to modify the AHP/MCA/PPO formulation. Thermogravimetric–Fourier transform infrared analysis tests showed that aluminum hypophosphite and melaminecyanurate acted in gaseous phase while aluminum hypophosphite and poly(phenylene oxide) helped to form char residue. TPE-S/AHP/MCA/PPO significantly decreased the heat release rate (reduction in peak heat release rate from 2001 to 494 kW m−2). Scanning electron microscopy/energy dispersive spectrometry results demonstrated that zinc borate and magnesium hydroxide promoted to retain more P and O elements in residue. Zinc borate and magnesium hydroxide in AHP/MCA/PPO formulation enhanced the char formation and reduced gas evolution of TPE-S, thus deteriorating the combination between gaseous phase and condensed phase.

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Popov, R. Yu, E. О. Bogdan, O. A. Sergievich, and E. M. Dyatlova. "Influence of zinc-containing compounds on the properties of ceramic materials based on the Li2O–MgO–Al2O3–SiO2 system." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 60, no. 1 (March 4, 2024): 73–80. http://dx.doi.org/10.29235/1561-8331-2024-60-1-73-80.

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The results of a study the influence of magnesium oxide substitution with zinc oxide in the Li2O–MgO– Al2O3–SiO2 system, as well as the introduction of pre-synthesized ganite ZnAl2O4, on sintering, phase formation and thermal expansion of synthesized materials are presented. It was found that after substitution of 4 % magnesium oxide MgO with zinc oxide ZnO, the ceramic material synthesized at a temperature of 1 150 °C was characterized by higher values of apparent density (not less than 1 835 kg/m3), mechanical compressive strength (300 MPa), and heat resistance (more than 80 thermal cycles), as well as low values of LTEC (–0,25 ∙ 10–6 K–1), which is due to the formation of crystalline phases of spodumene, spinel, forsterite, corundum, ganite and quartz.

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Salman, Taghried A., Tahseen Ali Ibrahim, and Salma Abd Al-Rudha Abbas. "Effect of Magnesium Oxide and Zinc Oxide Nanoparticles on Triiodothyronine Hormone." IOP Conference Series: Materials Science and Engineering 1145, no. 1 (April 1, 2021): 012050. http://dx.doi.org/10.1088/1757-899x/1145/1/012050.

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Nechifor, Mihai, Catalina Mihaiela Luca, and Cristina Gales. "Interactions of Antibacterial Antibiotics with Magnesium and Zinc." International Journal of Innovative Research in Medical Science 9, no. 01 (January 20, 2024): 50–58. http://dx.doi.org/10.23958/ijirms/vol09-i01/1798.

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The action of antibacterial antibiotics on bacteria but also on the cells of the human body is dependent on many factors. An important place is the interactions with magnesium and zinc. The aim of this narrative review is to highlight the complexity of interactions between these two cations and some antibacterial antibiotics. The review presents pharmacokinetic, pharmacodynamic interactions and the influence of magnesium and zinc on some adverse effects of antibiotics. The influences of some antibiotics on plasma concentrations of magnesium and zinc are also discussed. The interactions take place before the contact of the antibiotic with the pathogenic bacteria, during the action on bacteria but also after this action. Some adverse effects of antibiotics are produced by their direct action on human cells and plasma and tissue concentrations of magnesium and zinc are important for reducing these effects. These two biometals play multiple and complex roles in the human body. Some antibiotics such as aminoglycosides and polymyxins greatly increase the renal excretion of magnesium and significantly decrease the plasma concentration of this cation. Zinc increases the bacterial sensitivity to the action of beta-lactams. The polymerization of vancomycin dimers increases the antibacterial activity and it is dependent of zinc. Zinc oxide nanoparticles have a significant antibiofilm action. On the other hand, magnesium and zinc salts greatly reduce the digestive absorption of many antibiotics and decrease their bioavailability. Regarding adverse effects, there are situations were magnesium and zinc can reduce some of these effects. A low magnesium level aggravates the cartilage damage produced by quinolones. This cation reduces nephrotoxicity of Aminoglycosides and vancomycin and hepatotoxicity of some antituberculosis drugs. Determination of zinc and magnesium concentration is strictly necessary for patients receiving antibiotics and in the case of abnormal levels, correction must be made immediately.

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Verma, Dinesh K., Bharat Kumar, Kavita, and Rashmi B. Rastogi. "Zinc Oxide- and Magnesium-Doped Zinc Oxide-Decorated Nanocomposites of Reduced Graphene Oxide as Friction and Wear Modifiers." ACS Applied Materials & Interfaces 11, no. 2 (December 21, 2018): 2418–30. http://dx.doi.org/10.1021/acsami.8b20103.

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Shcherbakova, A. N., T. K. Ivanova, and I. P. Kremenetskaya. "Influence of aluminum and iron on zinc deposition from highly concentrated solutions." Transaction Kola Science Centre 11, no. 3-2020 (November 25, 2020): 81–84. http://dx.doi.org/10.37614/2307-5252.2020.3.4.017.

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The paper presents the results of experimental and thermodynamic modeling of the interaction of magnesium oxide with zinc sulfate solutions, including in the presence of iron and aluminum. It has been shown that depending on the conditions, zinc is deposited as anoxide, carbonate, hydroxide, and basic salt. Iron and aluminum have a significant influence on the deposition of zinc.

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Radulescu, Hortensia, Lidia Taubert, Sándor Kiss, Ecaterina Princz, and Éva Stefanovits-Bányai. "Effect of an industrial chemical waste on the uptake of cations by green oat." Journal of the Serbian Chemical Society 72, no. 6 (2007): 629–33. http://dx.doi.org/10.2298/jsc0706629r.

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Calcium carbonate, obtained as a waste in the industrial manufacture of magnesium carbonate and magnesium oxide from dolomites, can be applied in agriculture. The appreciable amounts of calcium and magnesium in this waste, together with impurities such as iron, zinc, manganese, chromium and copper compounds can be useful in soil amendment and plant nutrition. This paper presents preliminary results of the testing of several waste doses on soil, pursuing their effect on the uptake of cations by green oat (Avena sativa L.). The obtained results show an increase in the amount of calcium, magnesium, zinc and copper found in green oat plants, as well as a decrease of the content of iron and manganese with increasing waste dose. These results may be explained by lower absorptions of iron and manganese because of the antagonistic effect created by high amounts of calcium and magnesium, as well as by the presence of copper and zinc. .

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Krokidis, G., J. P. Xanthakis, and A. A. Iliadis. "A modeling of the optical properties of the zinc oxide–zinc magnesium oxide double barrier system." Solid-State Electronics 48, no. 10-11 (October 2004): 2099–102. http://dx.doi.org/10.1016/j.sse.2004.05.064.

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R. Indulal, C., R. Biju, Deepak Nand, and R. Raveendran. "Optical and Antibacterial Studies of Zinc Magnesium Oxide Nanocomposite." Oriental Journal of Chemistry 33, no. 3 (June 25, 2017): 1545–49. http://dx.doi.org/10.13005/ojc/330359.

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Elangovan, S. V., N. Sivakumar, and V. Chandramohan. "Magnesium doped zinc oxide nanocrystals for photo-catalytic applications." Journal of Materials Science: Materials in Electronics 26, no. 11 (August 4, 2015): 8753–59. http://dx.doi.org/10.1007/s10854-015-3553-7.

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Han, Q. F., Y. I. Jeong, J. H. Heo, C. M. Shin, H. Ryu, M. S. Park, W. J. Lee, J. H. Yoon, J. E. Yang, and H. Choi. "Magnesium-Doped Zinc Oxide Electrochemically Grown on Fluorine-Doped Tin Oxide Substrate." Journal of Nanoscience and Nanotechnology 12, no. 4 (April 1, 2012): 3677–81. http://dx.doi.org/10.1166/jnn.2012.5634.

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Gangwar, Jitendra, Bipin Kumar Gupta, and Avanish Kumar Srivastava. "Prospects of Emerging Engineered oxide nanomaterials and their Applications." Defence Science Journal 66, no. 4 (June 28, 2016): 323. http://dx.doi.org/10.14429/dsj.66.10206.

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This review article mainly focused on the recent progress on the synthesis and characterization of emerging artificially engineered nanostructures of oxide materials as well as their potential applications. A fundamental understanding about the state-of-the-art of the synthesis for different size, shape and morphology, which can be tuned to the desired properties of oxide nanomaterials have discussed in details in this review. The present review covers the a wide range of artificially engineered oxide nanomaterials such as cadmium-, cupric-, nickel-, magnesium-, zinc-, titanium-, tin-, aluminium-, and vanadium-oxides and their useful applications in sensors, optical displays, nanofluids and defence.

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Vasilev, A. P., S. N. Danilova, A. A. Okhlopkova, A. A. Dyakonov, A. V. Okoneshnikova, and I. S. Makarov. "Wear resistance of composite materials based on ultra-high molecular polyethylene with combined filling." Industrial laboratory. Diagnostics of materials 89, no. 8 (August 25, 2023): 76–82. http://dx.doi.org/10.26896/1028-6861-2023-89-8-76-82.

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Polymer composite materials (PCM) of antifriction duty with self-lubricating properties are used for the manufacture of various parts in friction units of machines and mechanisms. PCM can partially replace parts made of metals and alloys, increasing the reliability and service life of the equipment when the use of oils or external lubricants is limited or prohibited. The goal of the study is the effect of fillers (sulfenamide, sulfur, magnesium and zinc oxides) on the tribological parameters of polymer composite materials based on ultra-high molecular weight polyethylene (UHMWPE). Samples were prepared by hot pressing at a temperature of 175°C and a pressure of 10 MPa. Composites with filler concentrations 0.5 and 1 wt.% were considered (for sulfenamide, sulfenamide with sulfur, and combinations of 0.5 and 1 wt.% sulfenamide with sulfur and zinc oxide or magnesium oxide). It is shown that the introduction of sulfenamide leads to an increase in the wear resistance by six times, and the introduction of a combination of fillers of 0.5 wt.% sulfenamide, sulfur, and magnesium oxide — by 1.5 times. The friction surfaces of composites were studied using methods of scanning electron microscopy and IR-spectrometry. The formation of an oriented ordered structure in the form of clusters of wear products was revealed on the friction surfaces of composites filled with sulfenamide. In the case of combined filling, secondary structures were found on the friction surface, which visually differ from the UHMWPE friction surface. The appearance of peaks in IR spectra corresponding to oxygen-containing groups (–C=O, –COOX) was observed on the friction surface of composites with combined filling. It is shown that IR spectra of composites with mono- and binary fillers have peaks of less intensity due to the formation of secondary structures. The introduction of sulfenamide into UHMWPE, together with zinc and magnesium oxides, promotes the crosslinking of polymer macromolecules in the friction zone due to frictional heating, shear loads, and the action of a counterbody. The developed materials can be used as parts of friction units for cars and transport equipment that can withstand harsh operating conditions in a sharply continental climate.

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Amin, Muhammad, Nazar Abbas Shah, Arshad Saleem Bhatti, and Mohammad Azad Malik. "Effects of Mg doping on optical and CO gas sensing properties of sensitive ZnO nanobelts." CrystEngComm 16, no. 27 (2014): 6080–88. http://dx.doi.org/10.1039/c4ce00153b.

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Saini, Prabhjot K., Charles Romain, Yunqing Zhu, and Charlotte K. Williams. "Di-magnesium and zinc catalysts for the copolymerization of phthalic anhydride and cyclohexene oxide." Polym. Chem. 5, no. 20 (2014): 6068–75. http://dx.doi.org/10.1039/c4py00748d.

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Di-zinc and di-magnesium catalysts for the ring-opening copolymerization of phthalic anhydride and cyclohexene oxide are presented. They are applied in terpolymerizations to prepare block copoly(ester-carbonates).

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Yousuf, Shehla, Joyce E. Karlinsey, Stephanie L. Neville, Christopher A. McDevitt, Stephen J. Libby, Ferric C. Fang, and Elaine R. Frawley. "Manganese import protects Salmonella enterica serovar Typhimurium against nitrosative stress." Metallomics 12, no. 11 (2020): 1791–801. http://dx.doi.org/10.1039/d0mt00178c.

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Bhatt, Khushboo, Vikas Kumar Jain, and Fahmida Khan. "Antibacterial study of Eucalyptus grandis fabricated zinc oxide and magnesium doped zinc oxide nanoparticles and its characterization." Journal of the Indian Chemical Society 99, no. 5 (May 2022): 100441. http://dx.doi.org/10.1016/j.jics.2022.100441.

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Byeon, Haewon, V. S. Sreenivasan, Amaravadi Rama Krishna, Charudatta P. Thosar, Shrikant B. Randhavane, Deepak Singh Baghel, and J. Sunil. "Employing zinc oxide nanoparticle coating as a corrosion inhibitor for magnesium alloys in distinct aqueous electrolyte." Bulletin of the Chemical Society of Ethiopia 38, no. 2 (January 23, 2024): 417–30. http://dx.doi.org/10.4314/bcse.v38i2.10.

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In this investigation, zinc oxide nanoparticles were synthesised using a straightforward microwave-assisted technique. Results showed that the synthesised nanoparticles were hexagonal wurtzite ZnO-nanoparticles with a crystallite size of 6.76 nm, as determined by physio-chemical methods. It reveals, at varying magnifications, the irregularly aggregated, spherically shaped sponge-like structure. Using Fourier transform infrared spectroscopy, corresponding functional groups on ZnO surfaces have been observed. According to absorption measurements, the direct optical bandgap is around 3.29 eV. The photoluminescence spectra may be used to detect crystal defects in the ZnO lattice by looking for red emission and blue band edge emission. An investigation into the anticorrosion capabilities of zinc oxide nanoparticles was conducted, which revealed that the particles have beneficial characteristics when coated with magnesium (Mg) substrates. These materials are evaluated for corrosive resistance with and without a protective coating. Results show that coating significantly increased the protection rate under different electrolyte conditions. Compared to bare Mg plate, the charge transfer resistance Rct was increased when ZnO nanoparticles were coated. KEY WORDS: Zinc oxide nanoparticle, Microwave irradiation, Corrosion resistance, magnesium alloy Bull. Chem. Soc. Ethiop. 2024, 38(2), 417-430. DOI: https://dx.doi.org/10.4314/bcse.v38i2.10

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Kalendová, Andrea, David Veselý, and Miroslav Kohl. "Synthesis of Me2 TiO4 and MeFe2 O4 spinels and their use in organic alkyd resin-based anticorrosion coatings." Corrosion Reviews 32, no. 1-2 (June 1, 2014): 51–72. http://dx.doi.org/10.1515/corrrev-2013-0050.

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AbstractThe anticorrosion properties of paints containing mixed metal oxide-based pigments were examined. Spinels with the cation combinations Ti-Zn-Mg or Fe-Zn-Mg were synthesized. Core-shell pigments with zinc oxide and magnesium oxide layers were also prepared. The pigments were synthesized from the oxides or carbonates by the high-temperature solid-phase process. The anticorrosion and physico-mechanical properties of film of paints based on an alkyd resin modified with soy oil and containing the pigments at a volume concentration of 10% were investigated. The highest anticorrosion efficiency was observed with the ferrite-based pigments. The anticorrosion efficiency was found to increase with increasing Zn contents of the pigments.

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Pingot, Martyna, Tomasz Pingot, Magdalena Maciejewska, and Marian Zaborski. "The Influence of Nanostructured Metal Oxides and Unsaturated Acids on Peroxide Cross-Linking of Ethylene-Octene Rubber." Materials Science Forum 714 (March 2012): 271–76. http://dx.doi.org/10.4028/www.scientific.net/msf.714.271.

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This paper deals with blends of ethylene-octene rubber (POE) with nanostructured metal oxides: magnesium oxide (MgO), calcium oxide (CaO), zinc oxide (ZnO) and unsaturated acids: itaconic acid (IA), sorbic acid (SA) and crotonic acid (CA), as co-agents. Dicumyl peroxide (DCP) was used as a vulcanizing agent. Elastomer composites were prepared in Brabender measuring mixer N50. Rheometric properties of rubber mixes and crosslink density of vulcanizates were measured. Mechanical properties of the samples were also investigated. Dispersion degree of coagents in elastomer matrix was studied by SEM images. Cross-link density analysis revealed that POE vulcanizates contained both ionic bonds and covalent bonds. The results showed that the nanostructured metal oxides and unsaturated acids used as co-agents can greatly improve the modulus at 100% of elongation and tensile strength of the vulcanizates.

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Mohan, Sanjay Krishna, and Ritwik Sarkar. "Reaction sintered zinc oxide incorporated magnesium aluminate spinel from commercial grade oxide reactants." Journal of the Australian Ceramic Society 53, no. 1 (March 16, 2017): 207–16. http://dx.doi.org/10.1007/s41779-017-0026-x.

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Iribarnegaray, Victoria, Nicolas Navarro, Luciana Robino, Pablo Zunino, Javier Morales, and Paola Scavone. "Magnesium-doped zinc oxide nanoparticles alter biofilm formation ofProteus mirabilis." Nanomedicine 14, no. 12 (June 2019): 1551–64. http://dx.doi.org/10.2217/nnm-2018-0420.

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Ferri, Kevin, Saiphaneendra Bachu, Wanlin Zhu, Mario Imperatore, John Hayden, Nasim Alem, Noel Giebink, Susan Trolier-McKinstry, and Jon-Paul Maria. "Ferroelectrics everywhere: Ferroelectricity in magnesium substituted zinc oxide thin films." Journal of Applied Physics 130, no. 4 (July 28, 2021): 044101. http://dx.doi.org/10.1063/5.0053755.

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Alaani, Mohammed A. Razooqi, Prakash Koirala, Adam B. Phillips, Geethika K. Liyanage, Rasha A. Awni, Dhurba R. Sapkota, Balaji Ramanujam, et al. "Optical Properties of Magnesium-Zinc Oxide for Thin Film Photovoltaics." Materials 14, no. 19 (September 28, 2021): 5649. http://dx.doi.org/10.3390/ma14195649.

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Motivated by their utility in CdTe-based thin film photovoltaics (PV) devices, an investigation of thin films of the magnesium-zinc oxide (MgxZn1−xO or MZO) alloy system was undertaken applying spectroscopic ellipsometry (SE). Dominant wurtzite phase MZO thin films with Mg contents in the range 0 ≤ x ≤ 0.42 were deposited on room temperature soda lime glass (SLG) substrates by magnetron co-sputtering of MgO and ZnO targets followed by annealing. The complex dielectric functions ε of these films were determined and parameterized over the photon energy range from 0.73 to 6.5 eV using an analytical model consisting of two critical point (CP) oscillators. The CP parameters in this model are expressed as polynomial functions of the best fitting lowest CP energy or bandgap E0 = Eg, which in turn is a quadratic function of x. As functions of x, both the lowest energy CP broadening and the Urbach parameter show minima for x ~ 0.3, which corresponds to a bandgap of 3.65 eV. As a result, it is concluded that for this composition and bandgap, the MZO exhibits either a minimum concentration of defects in the bulk of the crystallites or a maximum in the grain size, an observation consistent with measured X-ray diffraction line broadenings. The parametric expression for ε developed here is expected to be useful in future mapping and through-the-glass SE analyses of partial and complete PV device structures incorporating MZO.

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Ghadi, Hemant, Punam Murkute, Sheetal Patil, and Subhananda Chakrabarti. "Zinc Magnesium Oxide-Based Nanorods for High-Precision pH Sensing." IEEE Sensors Journal 20, no. 9 (May 1, 2020): 4587–94. http://dx.doi.org/10.1109/jsen.2020.2964995.

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Kobayashi, Jun, Hideyuki Sekiwa, Miyuki Miyamoto, Naoki Ohashi, Isao Sakaguchi, Yoshiki Wada, Yutaka Adachi, and Hajime Haneda. "Growth of Thick Zinc Magnesium Oxide by Liquid Phase Epitaxy." Applied Physics Express 1 (June 20, 2008): 071201. http://dx.doi.org/10.1143/apex.1.071201.

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Yang, H., and P. G. McCormick. "Combustion Reaction of Zinc Oxide with Magnesium during Mechanical Milling." Journal of Solid State Chemistry 107, no. 1 (November 1993): 258–63. http://dx.doi.org/10.1006/jssc.1993.1346.

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Guerrero-Torres, Antonio, Carmen Jiménez-Gómez, Juan Cecilia, Cristina García-Sancho, José Quirante-Sánchez, Josefa Mérida-Robles, and Pedro Maireles-Torres. "Influence of the Incorporation of Basic or Amphoteric Oxides on the Performance of Cu-Based Catalysts Supported on Sepiolite in Furfural Hydrogenation." Catalysts 9, no. 4 (March 31, 2019): 315. http://dx.doi.org/10.3390/catal9040315.

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Cu-based catalysts supported on sepiolite have been tested in vapor-phase hydrogenation of furfural. The incorporation of basic or amphoteric metal oxides (magnesium oxide, zinc oxide, or cerium oxide) improves the catalytic behavior, reaching a maximum furfural conversion above 80% after 5 h of reaction at 210 °C. In all cases, the main product is furfuryl alcohol, obtaining 2-methylfuran in lower proportions. The incorporation of these metal oxide species ameliorates the dispersion of metallic Cu nanoparticles, increasing the number of available Cu0-sites, which enhances the catalytic performance. The presence of acid sites favors the hydrogenolysis of furfuryl alcohol towards 2-methylfuran, although it also causes an increase of carbon species on its surface, which is associated with the catalytic deactivation of the catalyst along the time-on-stream.

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Xi, Zhongxian, Chengqing Yuan, Xiuqin Bai, Chun Wang, and Anne Neville. "Preparation of Degradable Superhydrophobic Mg/P/Z/F/H Composite Materials and Their Anticorrosion." Coatings 11, no. 10 (October 12, 2021): 1239. http://dx.doi.org/10.3390/coatings11101239.

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In this study, the degradable superhydrophobic Mg/P/Z/F/H (magnesium/poly(-caprolactone)/zinc oxide/1H,1H,2H,2H-perfluorodecyltriethoxysilane (PFDTES)/heating process) composite materials were prepared through dip-coating method and heating process, for enhancing the corrosion resistance of the AZ91D magnesium alloys. The electrochemical measurements revealed that the Mg/P/Z/F/H materials significantly improved the corrosion resistance of the magnesium alloys in 3.5 wt.% NaCl. The Mg/P/Z/F/H composite materials exhibited efficient self-cleaning properties, good adhesion strength, and stability in wet atmosphere.

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Abraham, Philips, Katherine Quintus Jemy, Sachu Philip, and Krishnan Ramalingam. "Association of Serum Magnesium, Copper and Zinc with Severity of Coronary Artery Disease – A Cross-Sectional Study from Salem, India." Journal of Evolution of Medical and Dental Sciences 10, no. 37 (September 13, 2021): 3262–66. http://dx.doi.org/10.14260/jemds/2021/662.

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BACKGROUND Coronary artery disease (CAD) remains the principal cause of death and disability in both developed and developing countries. Factors that cause endothelial dysfunction have received increased attention as a potential contributor for atherogenesis. Micronutrients play an important role in maintaining endothelial function as it act as cofactors for number of enzymes. The purpose of this study was to determine plasma level of copper, zinc and magnesium in CAD patients and its correlation with severity of coronary artery disease. METHODS Study group consisted of angiographically positive CAD patients (n = 30) and age and sex matched controls (n = 30). Severity of the CAD was assessed based on the number, location and percentage of stenosis of coronary vessels involved and SYNTAX score was calculated. CAD patients were classified into grade I, II and III based on SYNTAX score. Level of copper, zinc and magnesium in plasma and hemolysate was analysed using atomic absorption spectrometry. Plasma nitric oxide level was also analysed. RESULTS In our study, Plasma copper level was found to be significantly high and zinc copper ratio, hemolysate Mg level were found to be significantly low in CAD patients. The latter parameters were found to have a significant negative correlation with severity of the diseases and with the level of nitric oxide. CONCLUSIONS Even though a number of confounding factors can influence the copper, zinc and magnesium levels in the body, our study shows that levels of these elements have a significant association with severity of coronary artery diseases. KEY WORDS Coronary Artery Disease, Endothelial Dysfunction, Syntax Score

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kalurazi, TofighYaghubi, and Alireza Jafari. "Evaluation of Magnesium Oxide and Zinc Oxide Nanoparticles against Multi-drug-resistance Mycobacterium tuberculosis." International Journal of Mycobacteriology 9, no. 5 (2021): 66. http://dx.doi.org/10.4103/2212-5531.307118.

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Rashad, M., H. O. Tekin, Hesham MH Zakaly, Mariia Pyshkina, Shams A. M. Issa, and G. Susoy. "Physical and nuclear shielding properties of newly synthesized magnesium oxide and zinc oxide nanoparticles." Nuclear Engineering and Technology 52, no. 9 (September 2020): 2078–84. http://dx.doi.org/10.1016/j.net.2020.02.013.

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Sunny, Erin Ann, Nahan Nazar, M. Bhagyalakshmi, S. Sooryanarayanan, A. Chithra Mohan, Jomol Mariyam Thomas, Varsha Nair, G. Sivasubramanian, K. M. Sreekanth, and K. M. Sreedhar. "Preparation and characterisation of nickel oxide and nickel oxide codoped with magnesium and zinc." IOP Conference Series: Materials Science and Engineering 1291, no. 1 (September 1, 2023): 012021. http://dx.doi.org/10.1088/1757-899x/1291/1/012021.

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Abstract The present work focuses on the formulation and characterisation of undoped NiO and NiO codoped with Mg and Zn. The samples were characterized by x-ray diffractometer and ultraviolet-visible spectrophotometer. For the detection of elements present in the samples, energy dispersive x-ray analysis was employed. Two sets of codoped samples were prepared varying the amount of Mg and Zn. A set of codoped samples was prepared keeping the quantity of Mg at a fixed value and allowed the quantity of Zn to fluctuate. The second set of codoped samples was prepared keeping the extent of Zn at a fixed value and allowed the quantity of Mg to fluctuate. The bandwidth of undoped and codoped materials was computed raising Tauc plot. Crystallite size was computed following Scherrer formula.

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Al-Meshal, Areej Suliman, Maryam H. Al-Zahrani, Rokayya Sami, Garsa Alshehry, Nimah Alnemari, Uthman Balgith Algopishi, Sarah Alharthi, et al. "Innovative Surface Nano Zinc Oxide Coatings: A Breakthrough in Grape Preservation, Enriching Phytochemicals, and Mitigating Fungal Contamination for Enhanced Nutritional Quality." Science of Advanced Materials 16, no. 2 (February 1, 2024): 244–52. http://dx.doi.org/10.1166/sam.2024.4635.

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This study explores the transformative impact of the innovative surface nano zinc oxide coatings on grapes, emphasizing their influence on postharvest attributes, phytochemical composition, and fungal population. Distinct coating formulations, including distilled water (Control), chitosan (C), chitosan-nano zinc oxide (C-NZO), and chitosan-nano zinc oxide with the addition of essential oils (C-NZO-EO), were applied to fresh grapes. Results unveiled that the C-NZO-EO treatment positively impacted potassium, calcium, and magnesium levels. Control samples exhibited the highest acidity (3.8), while C-NZO-EO demonstrated superior visual rachis scores (3.41). Anthocyanidin analysis revealed elevated values especially for C-NZO-EO-treated grapes. Fungal populations were significantly reduced in samples treated with C-NZO-EO to reach (3.44 CFU/g). In conclusion, coating with C-NZO-EO emerged as a highly effective strategy for grape preservation, offering enhanced nutritional quality and fungal resistance.

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Ellmer, Klaus, and Götz Vollweiler. "Electrical transport parameters of heavily-doped zinc oxide and zinc magnesium oxide single and multilayer films heteroepitaxially grown on oxide single crystals." Thin Solid Films 496, no. 1 (February 2006): 104–11. http://dx.doi.org/10.1016/j.tsf.2005.08.269.

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Yudaev, Pavel, Vladimir Chuev, Bogdan Klyukin, Andrey Kuskov, Yaroslav Mezhuev, and Evgeniy Chistyakov. "Polymeric Dental Nanomaterials: Antimicrobial Action." Polymers 14, no. 5 (February 22, 2022): 864. http://dx.doi.org/10.3390/polym14050864.

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This review aims to describe and critically analyze studies published over the past four years on the application of polymeric dental nanomaterials as antimicrobial materials in various fields of dentistry. Nanoparticles are promising antimicrobial additives to restoration materials. According to published data, composites based on silver nanoparticles, zinc(II), titanium(IV), magnesium(II), and copper(II) oxide nanoparticles, chitosan nanoparticles, calcium phosphate or fluoride nanoparticles, and nanodiamonds can be used in dental therapy and endodontics. Composites with nanoparticles of hydroxyapatite and bioactive glass proved to be of low efficiency for application in these fields. The materials applicable in orthodontics include nanodiamonds, silver nanoparticles, titanium(IV) and zinc(II) oxide nanoparticles, bioactive glass, and yttrium(III) fluoride nanoparticles. Composites of silver nanoparticles and zinc(II) oxide nanoparticles are used in periodontics, and nanodiamonds and silver, chitosan, and titanium(IV) oxide nanoparticles are employed in dental implantology and dental prosthetics. Composites based on titanium(IV) oxide can also be utilized in maxillofacial surgery to manufacture prostheses. Composites with copper(II) oxide nanoparticles and halloysite nanotubes are promising materials in the field of denture prosthetics. Composites with calcium(II) fluoride or phosphate nanoparticles can be used in therapeutic dentistry for tooth restoration.

Journal articles on the topic 'Zinc Magnesium Oxide'

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