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Journal articles on the topic 'Metallic iodate'

Author: Grafiati

Published: 4 May 2024

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1

Taninouchi, Yu-ki, and Tetsuya Uda. "Rapid Oxidative Dissolution of Metallic Tin in Alkaline Solution Containing Iodate Ions." Journal of Sustainable Metallurgy 7, no. 4 (November 5, 2021): 1762–71. http://dx.doi.org/10.1007/s40831-021-00450-3.

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2

Wei, Shubo, and Hanyu Liu. "High-Pressure Structures and Superconductivity of Barium Iodide." Materials 15, no. 2 (January 10, 2022): 522. http://dx.doi.org/10.3390/ma15020522.

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Generally, pressure is a useful tool to modify the behavior of physical properties of materials due to the change in distance between atoms or molecules in the lattice. Barium iodide (BaI2), as one of the simplest and most prototypical iodine compounds, has substantial high pressure investigation value. In this work, we explored the crystal structures of BaI2 at a wide pressure range of 0–200 GPa using a global structure search methodology. A thermodynamical structure with tetragonal I4/mmm symmetry of BaI2 was predicted to be stable at 17.1 GPa. Further electronic calculations indicated that I4/mmm BaI2 exhibits the metallic feature via an indirect band gap closure under moderate pressure. We also found that the superconductivity of BaI2 at 30 GPa is much lower than that of CsI at 180 GPa based on our electron–phonon coupling simulations. Our current simulations provide a step toward the further understanding of the high-pressure behavior of iodine compounds at extreme conditions.

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Thakur, Mrinal, and Justin Van Cleave. "Electroabsorption in Metallic Nanoparticles within Transparent Dielectric Media." Applied Sciences 10, no. 14 (July 17, 2020): 4904. http://dx.doi.org/10.3390/app10144904.

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Electroabsorption in metallic nanoparticles within transparent dielectric media has been measured. In particular, gold nanoparticles in glass and subnanometer-size metallic domains in iodine doped nonconjugated conductive polymer have been studied. Measurements have been made for applied ac fields at 4 kHz, at a wavelength close to the onset of the surface plasmon resonance. The measured electroabsorption (imaginary part of χ(3) or Kerr coefficient) has a quadratic dependence on electric field. Its magnitudes were compared for different sizes of the metallic nanoparticles down to the subnanometer-size particles in iodine-doped nonconjugated conductive polymer. As in the case of quadratic electro-optic effect reported earlier, electroabsorption has approximately a 1/d3 dependence, d being the diameter of nanoparticle. This is consistent with existing theories on confined metallic systems.

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4

Feng, Lijuan, Shanshan Zhang, Yan Zhou, Rongkai Pan, Hongchen Du, Fangfang Liu, and Yongqi Yang. "Expired Glucosamine Drugs as Green Corrosion Inhibitors for Carbon Steel in H2SO4 Solution and Synergistic Effect of Glucosamine Molecules with Iodide Ions: Combined Experimental and Theoretical Investigations." Crystals 13, no. 2 (January 23, 2023): 205. http://dx.doi.org/10.3390/cryst13020205.

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Glucosamine is a natural drug widely used for treating osteoarthritis and is usually left until it expires, which will cause a waste of resources if treated as garbage. However, its molecule contains many heteroatoms, entitling it to be a potential corrosion inhibitor. In this investigation, the corrosion inhibition activities of two types of expired glucosamine drugs (glucosamine hydrochloride and glucosamine sulfate) on carbon steel were estimated by electrochemical methods in the acidic solution. The results demonstrated that the glucosamine drugs were mixed-type corrosion inhibitors. Glucosamine hydrochloride could inhibit the carbon steel corrosion more significantly than that of sulfuric style at the same glucosamine content, suggesting a possible synergistic effect of glucosamine molecules with halide ions. Then, the co-adsorption behaviors of glucosamine sulfate with iodide ions were studied by experimental research, as well as theoretical investigations. The results indicated that the inhibition effect could be significantly enhanced when the glucosamine drug was utilized in combination with iodide ions. The electronic structures played a critical role in the synergistic inhibition of glucosamine drugs and iodide ions. Neutral molecules could interact with the metallic surface vertically through the amino and carbonyl groups, while protonated molecules were able to adsorb on it in parallel with the help of multiple functional groups. Since glucosamine molecules would be protonated and positively charged in the acidic solution, they were difficult to adsorb on the solid surface with metallic cations. When the iodide ions were presented, they preferentially adsorbed on the carbon steel surface and induced it to be negatively charged. Therefore, protonated glucosamine molecules could adsorb on the metallic surface using iodide ions as a bridge and form a protective film to mitigate the carbon steel corrosion.

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5

Tiong, L. Y. D., B. K. Pong, and R. D. Webster. "Closed vessel microwave digestion of air filters for measurements of elemental iodine." Analytical Methods 9, no. 19 (2017): 2909–14. http://dx.doi.org/10.1039/c7ay01017f.

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An acid assisted closed vessel microwave digestion procedure was developed for the treatment of fine airborne particulate matter that allows elemental iodine to be solubilised simultaneously with other metallic elements.

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6

Bhushan, Bharat, Nitesh Goswami, S. C. Parida, B. N. Rath, Sanjukta A. Kumar, V. Karki, R. C. Bindal, and Soumitra Kar. "Corrosion behavior analyses of metallic membranes in hydrogen iodide environment for iodine-sulfur thermochemical cycle of hydrogen production." International Journal of Hydrogen Energy 43, no. 24 (June 2018): 10869–77. http://dx.doi.org/10.1016/j.ijhydene.2018.04.212.

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7

Fujii, Y., K. Hase, Y. Ohishi, N. Hamaya, and A. Onodera. "Pressure-induced monatomic tetragonal phase of metallic iodine." Solid State Communications 59, no. 2 (July 1986): 85–89. http://dx.doi.org/10.1016/0038-1098(86)90291-7.

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8

Fagerquist, Clifton K., Dilip K. Sensharma, and Mostafa A. El-Sayed. ""Mixed" metallic-ionic clusters of silver/silver iodide." Journal of Physical Chemistry 95, no. 23 (November 1991): 9169–75. http://dx.doi.org/10.1021/j100176a026.

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9

Kou, Yi, and Takahide Oya. "Unique Dye-Sensitized Solar Cell Using Carbon Nanotube Composite Papers with Gel Electrolyte." Journal of Composites Science 7, no. 6 (June 5, 2023): 232. http://dx.doi.org/10.3390/jcs7060232.

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We propose a unique form of dye-sensitized solar cells (DSSCs), paper DSSCs based on carbon-nanotube (CNT) composite papers, and the use of a gel electrolyte for the paper DSSC. In our previous study, we succeeded in developing the paper DSSC. However, its performance and lifetime were not sufficient. We considered that the problem was the use of liquid-type electrolyte. To improve the performance of the paper DSSC, a gel electrolyte was introduced to increase safety and durability. Here, a polymer gel electrolyte was synthesized using a copolymer of polyethylene glycol (PEG) and polyvinylidene fluoride (PVDF) as a matrix, mixed with iodine and potassium iodide. The resulting paper DSSC had a fill factor (FF, a performance indicator) of 0.248 and a conversion efficiency of 2.43 × 10−5% with an extended working time (lifetime) of more than 110 min. Further modifications were made to the metallic CNT composite paper and the gel electrolyte, resulting in an increased conversion efficiency of 2.02 × 10−3%. This study suggests the potential of gel electrolytes in enhancing the performance of paper DSSCs, providing new insights for their future applications.

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10

OGURI, Y., J. HASEGAWA, M. OGAWA, J. KANEKO, and K. SASA. "A PHANTOM TEST OF PROTON-INDUCED DUAL-ENERGY X-RAY ANGIOGRAPHY USING IODINATED CONTRAST MEDIA." International Journal of PIXE 17, no. 01n02 (January 2007): 11–21. http://dx.doi.org/10.1142/s0129083507001058.

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Characteristic-line radiation from heavy metal targets bombarded by MeV proton beams has been tested as an X-ray source for dual-energy K-edge subtraction imaging for human angiography (blood vessel imaging) based on iodinated contrast media. To utilize the strong absorption by iodine (Z = 53) at its K-absorption edge (33.2 keV), we used K α-line of La (lanthanum, Z = 57) at 33.4 keV. As a reference, also K α X emission of Sn (tin, Z = 50) at 25.2 keV was employed. Metallic plates of La and Sn were irradiated by 7-MeV protons to produce these characteristic X-rays. Energy-subtraction method was tested using Lucite phantoms which contain aqueous solutions of KI (potassium iodide) with different concentrations. Also Ca ( H 2 PO 4)2 powder was stuffed in these phantoms to simulate bones. The transmission images of the phantoms were recorded on imaging plates. During the exposure, the energy spectra of the X-rays were monitored by a CdTe detector. We found that the contrast of images of iodide solutions taken with La X-rays was higher than that with Sn X-rays. Also the energy subtraction procedure was successfully applied to reduce the graphical noise due to the bones and inhomogeneity of the soft tissue. However, to apply the present method to actual clinical use, the X-ray intensity must be increased by several orders of magnitude. Also the transmission of the “lower-energy” photons has to be a few orders higher for imaging of objects as thick as human chest.

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11

Karlsson, Erik, Jörg Neuhausen, Robert Eichler, Ivan I. Danilov, Alexander Vögele, and Andreas Türler. "Silver as a capturing material for iodine released from lead–bismuth eutectic in various conditions." Journal of Radioanalytical and Nuclear Chemistry 328, no. 2 (April 21, 2021): 707–15. http://dx.doi.org/10.1007/s10967-021-07669-0.

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AbstractThe usage of silver as a filtering material for removal of iodine from the gas phase of a lead–bismuth eutectic based nuclear reactor was investigated in various atmospheres representing normal operation as well as accident conditions. Thermochromatography experiments were performed to quantify the retention experienced on a silver surface by iodine species evaporated from a lead–bismuth eutectic sample. Measured adsorption enthalpies ranged from −171 to − 208 kJ mol−1 with observed differences attributed to various surface effects rather than a change in iodine speciation. The postulated adsorption mechanism is chemisorption of iodine atoms on the silver surface. Metallic silver fulfills the desired criteria for a capturing material in water-free filtering systems to be used as an alternative to traditional alkaline scrubbers commonly used in LWR systems.

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12

Ying, Fei, Xu Yuan, Xinxing Zhang, and Jing Xie. "Stabilizing Halogen-Bonded Complex between Metallic Anion and Iodide." Molecules 27, no. 22 (November 21, 2022): 8069. http://dx.doi.org/10.3390/molecules27228069.

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Halogen bonds (XBs) between metal anions and halides have seldom been reported because metal anions are reactive for XB donors. The pyramidal-shaped Mn(CO)5− anion is a candidate metallic XB acceptor with a ligand-protected metal core that maintains the negative charge and an open site to accept XB donors. Herein, Mn(CO)5− is prepared by electrospray ionization, and its reaction with CH3I in gas phase is studied using mass spectrometry and density functional theory (DFT) calculation. The product observed experimentally at m/z = 337 is assigned as [IMn(CO)4(OCCH3)]−, which is formed by successive nucleophilic substitution and reductive elimination, instead of the halogen-bonded complex (XC) CH3−I···Mn(CO)5−, because the I···Mn interaction is weak within XC and it could be a transient species. Inspiringly, DFT calculations predict that replacing CH3I with CF3I can strengthen the halogen bonding within the XC due to the electro-withdrawing ability of F. More importantly, in so doing, the nucleophilic substitution barrier can be raised significantly, ~30 kcal/mol, thus leaving the system trapping within the XC region. In brief, the combination of a passivating metal core and the introduction of an electro-withdrawing group to the halide can enable strong halogen bonding between metallic anion and iodide.

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13

Fujii, Y., K. Hase, N. Hamaya, Y. Ohishi, A. Onodera, O. Shimomura, and K. Takemura. "Pressure-induced face-centered-cubic phase of monatomic metallic iodine." Physical Review Letters 58, no. 8 (February 23, 1987): 796–99. http://dx.doi.org/10.1103/physrevlett.58.796.

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14

McCollum, B. C., D. S. Dudis, A. Lachgar, and John D. Corbett. "The layered, metallic scandium iodide Sc0.93I2: synthesis, structure, and properties." Inorganic Chemistry 29, no. 10 (May 1990): 2030–32. http://dx.doi.org/10.1021/ic00335a054.

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15

Nogami, Yoshio, Hiroshi Kaneko, Takehiko Ishiguro, Akio Takahashi, Jun Tsukamoto, and Nobuyoshi Hosoito. "On the metallic states in highly conducting iodine-doped polyacetylene." Solid State Communications 76, no. 5 (November 1990): 583–86. http://dx.doi.org/10.1016/0038-1098(90)90093-q.

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16

Chen, Wei-Te, Graham A. Bowmaker, John M. Seakins, and Ralph P. Cooney. "Vibrational Spectroscopic Study of Iodine-Doped Poly(Isothianaphthene)." Applied Spectroscopy 56, no. 7 (July 2002): 909–15. http://dx.doi.org/10.1366/000370202760171590.

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Far-infrared, mid-infrared, and Raman spectroscopy were used to characterize iodine-doped poly(isothianaphthene) (PITN) films and powders. The far-infrared and mid-infrared results show changes from absorption mode to reflective mode as the doping level increases, consistent with the iodine-doped PITN becoming more metallic and more conductive at higher doping levels. The far-IR and Raman (514.5-nm laser excitation) results show that I3− is dominant in iodine-doped PITN. The Raman spectral changes observed using 1064-nm excitation are different from those measured using 514.5-nm excitation. The spectra recorded with 514.5-nm excitation show features due to the undoped parts of the polymer, and these indicate that the effective conjugated chain length decreases with increased doping. The Raman spectra obtained by using 1064-nm excitation show features due to polaron and bipolaron states in the doped polymer.

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17

Mohamed, Muhamad Idham, Mohd Khairul Amran Mohammad, Hairil Rashmizal Abdul Razak, Khairunisak Abdul Razak, and Wan Mazlina Md Saad. "Nanotoxic Profiling of Novel Iron Oxide Nanoparticles Functionalized with Perchloric Acid and SiPEG as a Radiographic Contrast Medium." BioMed Research International 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/183525.

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Emerging syntheses and findings of new metallic nanoparticles (MNPs) have become an important aspect in various fields including diagnostic imaging. To date, iodine has been utilized as a radiographic contrast medium. However, the raise concern of iodine threats on iodine-intolerance patient has led to search of new contrast media with lower toxic level. In this animal modeling study, 14 nm iron oxide nanoparticles (IONPs) with silane-polyethylene glycol (SiPEG) and perchloric acid have been assessed for toxicity level as compared to conventional iodine. The nanotoxicity of IONPs was evaluated in liver biochemistry, reactive oxygen species production (ROS), lipid peroxidation mechanism, and ultrastructural evaluation using transmission electron microscope (TEM). The hematological analysis and liver function test (LFT) revealed that most of the liver enzymes were significantly higher in iodine-administered group as compared to those in normal and IONPs groupsP<0.05. ROS production assay and lipid peroxidation indicator, malondialdehyde (MDA), also showed significant reductions in comparison with iodine groupP<0.05. TEM evaluation yielded the aberration of nucleus structure of iodine-administered group as compared to those in control and IONPs groups. This study has demonstrated the less toxic properties of IONPs and it may postulate that IONPs are safe to be applied as radiographic contrast medium.

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18

Löber, Manuel, Markus Ströbele, Carl P. Romao, and Hans-Jürgen Meyer. "W2O3I4 and WO2I2: metallic phases in the chemical transport reaction of tungsten." Dalton Transactions 50, no. 20 (2021): 6789–92. http://dx.doi.org/10.1039/d1dt01212f.

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WO₂I₂, a compound important in the chemical transport reaction of elemental tungsten and the hitherto unknown W₂O₃I₄ are reported with their layered structures. Increasing iodine content increases the metallicity of the compounds.

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19

Le, Li Ben, and Olivier Vittori. "Étude des courants périodiques observés lors de la dissolution électrochimique du nickel en présence d'ions iodure et chlorure en milieu aqueux." Canadian Journal of Chemistry 66, no. 6 (June 1, 1988): 1525–28. http://dx.doi.org/10.1139/v88-246.

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Electrodissolution of nickel in the presence of chloride and iodide ions has been investigated using low sweep voltammetry (< 2 mV/s). It has been observed that the rate of dissolution of nickel is related to the concentration of chloride, and that addition of iodide modifies the shape of the curves. Oscillations of the current are noticed after a delay shortened by increasing the iodide concentration. These oscillations occur over a wide range of potential provided the iodide concentration is kept low. Increasing this concentration suppresses the oscillations, while two peaks appear, the more cathodic becoming progressively larger. Addition of some surfactants is discussed and progressively larger. Addition of some surfactants is discussed and only SOBS (sodium p-octylbenzene sulfonate) suppresses the oscillations even at low concentration, while starch acts progressively from 1 to 40 g/L. Changes of color of the nickel surface during the oscillations suggests a preferential dissolution at the grain boundaries, explaining the black color observed alternatively with a metallic appearance, the nickel being at this time covered with finely divided particles that dissolve quickly. Iodide, appearing only occasionally at such anodic potentials, is probably involved in the dissolution process.

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20

Bernick, M., P. F. Berry, G. R. Voots, G. Prince, J. B. Ashe, J. Patel, and P. Gupta. "A High Resolution Portable XRF HgI2 Spectrometer for Field Screening of Hazardous Metal Wastes." Advances in X-ray Analysis 35, B (1991): 1047–53. http://dx.doi.org/10.1154/s0376030800013288.

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AbstractThe use of a field portable XRF analyzer incorporating a semiconductor, mercuric iodide, energy dispersive spectrometer is described with emphasis on the benefits of high resolution x-ray detection for rapid screening of hazardous metallic wastes. Results are presented of “in-situ” and “prepared sample” soil measurement for different sites to show the potential of Fundamental Parameter analysis to obtain acceptable quality data with minimum calibration effort, obviating the need for site-specific standards.

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21

Kumar, Sourabh, Rameshwar L. Kumawat, and Biswarup Pathak. "Spin-Polarized Current in Ferromagnetic Half-Metallic Transition-Metal Iodide Nanowires." Journal of Physical Chemistry C 123, no. 25 (June 10, 2019): 15717–23. http://dx.doi.org/10.1021/acs.jpcc.9b02464.

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22

Leroy, O., and C. Monsanglant-Louvet. "Trapping measurements of volatile iodine by sand bed and metallic filters." Journal of Radioanalytical and Nuclear Chemistry 322, no. 2 (September 20, 2019): 913–22. http://dx.doi.org/10.1007/s10967-019-06786-1.

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23

Fagerquist, Clifton K., Dilip K. Sensharma, Temer S. Ahmadi, and M. A. El-Sayed. "Adhesion of silver iodide molecules to gaseous metallic silver cluster cations." Journal of Physical Chemistry 97, no. 25 (June 1993): 6598–601. http://dx.doi.org/10.1021/j100127a007.

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24

Nagara, Hitose, Takahiro Ishikawa, and Takao Kotani. "Band structure and pressure-induced metallic transition in iodine – GW calculation." High Pressure Research 34, no. 2 (February 18, 2014): 215–21. http://dx.doi.org/10.1080/08957959.2013.867040.

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25

Mohamed Saheed, Mohamed Salleh, Norani Muti Mohamed, Balbir Singh Mahinder Singh, Mohamed Shuaib Mohamed Saheed, and Rajan Jose. "Optoelectronic Enhancement of Perovskite Solar Cells through the Incorporation of Plasmonic Particles." Micromachines 13, no. 7 (June 25, 2022): 999. http://dx.doi.org/10.3390/mi13070999.

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The optoelectronic advantages of anchoring plasmonic silver and copper particles and non-plasmonic titanium particles onto zinc oxide (ZnO) nanoflower (NF) scaffolds for the fabrication of perovskite solar cells (PSCs) are addressed in this article. The metallic particles were sputter-deposited as a function of sputtering time to vary their size on solution-grown ZnO NFs on which methylammonium lead iodide perovskite was crystallized in a controlled environment. Optical absorption measurements showed impressive improvements in the light-harvesting efficiency (LHE) of the devices using silver nanoparticles and some concentrations of copper, whereas the LHE was relatively lower in devices used titanium than in a control device without any metallic particles. Fully functional PSCs were fabricated using the plasmonic and non-plasmonic metallic film-decorated ZnO NFs. Several fold enhancements in photoconversion efficiency were achieved in the silver-containing devices compared with the control device, which was accompanied by an increase in the photocurrent density, photovoltage, and fill factor. To understand the plasmonic effects in the photoanode, the LHE, photo-current density, photovoltage, photoluminescence, incident photon-to-current conversion efficiency, and electrochemical impedance properties were thoroughly investigated. This research showcases the efficacy of the addition of plasmonic particles onto photo anodes, which leads to improved light scattering, better charge separation, and reduced electron–hole recombination rate.

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26

Popescu, Ana Maria, Cristina Donath, Elena Ionela Neacsu, Vasile Soare, Ionut Constantin, Marian Burada, Daniela Violeta Dumitrescu, Kazimir Yanuskevich, and Virgil Constantin. "The Use of Deep Eutectic Solvents Ionic Liquids for Selective Dissolution and Recovery of Sn, Pb and Zn from Electric and Electronic Waste (WEEE)." Revista de Chimie 68, no. 9 (October 15, 2017): 1963–68. http://dx.doi.org/10.37358/rc.17.9.5802.

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The recovery of metals from a multi-component alloy obtained by crushing, melting and anodic dissolution of waste electric and electronic equipment (WEEE) has been investigated. The aim of this paper is to selective recover of Sn, Pb and Zn by a novel ecological technology using ionic liquids. Metallic Sn, Pn and Zn were electrochemically recovered from the WEEE dissolved in choline chloride-ethylene glycol-iodine ionic liquid. Cyclic voltammetry was used in order to determine the deposition potentials of the studied metals. XRD and SEM/EDX analysis methods were used to characterize the structure and morphology of the metallic deposits. Evolution of the cathodic deposition and of the chemical composition of the anode during the anodic dissolution process for Sn, Pb and Zn was also studied. This study has demonstrated the possibility of selective recovery of Sn, Pb and Zn from the multi-component alloy (which resulted from consecutive anodic dissolution of WEEE) by anodic dissolution/deposition in ionic liquids.

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27

Mentz, Marian, Agnes M. Modro, and Tomasz A. Modro. "Solvation and metal ion effects on structure and reactivity of phosphoryl compounds. Part 4. Dealkylation of phosphate esters by thiophenoxide ion in methanol." Canadian Journal of Chemistry 72, no. 9 (September 1, 1994): 1933–36. http://dx.doi.org/10.1139/v94-246.

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Second-order rate constants for the demethylation of three phosphate esters by thiophenoxide salts, PhS−M+ (M+ = Me4N+, K+, Na+, Li+) in methanol-d4 at 25 °C have been measured. In contrast to the demethylation by iodide salts, metallic counterions do not exhibit any catalytic effects on the demethylation rate. The absence of the catalysis indicates that the salts react exclusively as ion pairs, in which an alkali metal ion is not available for the interactions with the phosphoryl group in the transition state.

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28

Pak, Sangyeon, Jiwon Son, Taehun Kim, Jungmoon Lim, John Hong, Younhee Lim, Chul-Joon Heo, et al. "Facile one-pot iodine gas phase doping on 2D MoS₂/CuS FET at room temperature." Nanotechnology 34, no. 1 (October 12, 2022): 015702. http://dx.doi.org/10.1088/1361-6528/ac952f.

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Abstract Electronic devices composed of semiconducting two-dimensional (2D) materials and ultrathin 2D metallic electrode materials, accompanying synergistic interactions and extraordinary properties, are becoming highly promising for future flexible and transparent electronic and optoelectronic device applications. Unlike devices with bulk metal electrode and 2D channel materials, devices with ultrathin 2D electrode and 2D channel are susceptible to chemical reactions in both channel and electrode surface due to the high surface to volume ratio of the 2D structures. However, so far, the effect of doping was primary concerned on the channel component, and there is lack of understanding in terms of how to modulate electrical properties of devices by engineering electrical properties of both the metallic electrode and the semiconducting channel. Here, we propose the novel, one-pot doping of the field-effect transistor (FET) based on 2D molybdenum disulfide (MoS2) channel and ultrathin copper sulfide (CuS) electrodes under mild iodine gas environment at room temperature, which simultaneously modulates electrical properties of the 2D MoS2 channel and 2D CuS electrode in a facile and cost-effective way. After one-pot iodine doping, effective p-type doping of the channel and electrode was observed, which was shown through decreased off current level, improved I on/I off ratio and subthreshold swing value. Our results open up possibility for effectively and conveniently modulating electrical properties of FETs made of various 2D semiconductors and ultrathin contact materials without causing any detrimental damage.

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29

Rodrigues, Fabrício, Paula Pinheiro, Mário Sousa, Rômulo Angélica, Simone Paz, and Marcos Reis. "Electrical Properties of Iodine-Doped Cu/f-CNT Coated Aluminum Wires by Electrophoresis with Copper Sulfate Solution." Metals 12, no. 5 (May 3, 2022): 787. http://dx.doi.org/10.3390/met12050787.

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This work investigated the effects of iodine on copper/functionalized carbon nanotubes (Cu/f-CNT) that were used in the coating of 1350 Aluminum Alloy wires, using the process of electrophoretic exposure with a solution of copper sulfate and iodine, under an electrical current of 1.2 A and a voltage of 10 V. The Al@Cu/f-CNT was characterized by Scanning Electron Microscopy in Secondary Electron mode, X-ray Diffraction and Raman spectroscopy, in addition to electrical measurements, at room temperature and under heating, via kelvin bridge. The results showed an increase of approximately 18% in the electrical conductivity of the IACS compared to the standard aluminum conductor, due to the iodine doping of the outer walls of the f-CNT, causing an expansion between the layers, and reflecting the increase in the conduction channels. This method of electrodeposition of Cu/f-CNT on the surface of metallic wires shows promise for the production of nanostructured cables with high ampacity, lightness and high performance, for application in power transmission lines.

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30

Setiaty Pandia and Randi Sitorus. "PENENTUAN BILANGAN IODIN ADSORBEN KULIT JENGKOL DAN APLIKASINYA DALAM PENYERAPAN LOGAM Pb (II) PADA LIMBAH CAIR INDUSTRI PELAPISAN LOGAM." Jurnal Teknik Kimia USU 5, no. 4 (January 24, 2017): 8–14. http://dx.doi.org/10.32734/jtk.v5i4.1548.

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The aim of this research is to study the effect of activation processes to iodine number of ngapi nut peel adsorbent and to study the optimum adsorbent mass to reduce metallic lead (Pb) concentration in electroplating wastewater. Ngapi nut peel was cleaned and mashed to a size of 100 mesh of sieve tray and then activated using nitric acid (HNO3) 4 N with specific ratio ngapi nut peel : nitric acid while heated at specific activation temperature and duration. Adsorbent dried in oven at specific temperature and duration of drying. Adsorbent with optimum iodine number then used in batch adsorption that carried out by using variations of mass in 50 mL of wastewater. The results showed that the optimum ratio of ngapi nut peel : nitric acid is 20:1 mg/mL at activation temperature 90°C, duration of activation 120 minutes, drying temperature 110 °C and duration of drying 120 minutes with iodine number 634.50 mg/g. The optimum mass of adsorbent is 1 g with percent of removal 69,19 %.

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31

Setiaty Pandia and Budi Warman. "PEMANFAATAN KULIT JENGKOL SEBAGAI ADSORBEN DALAM PENYERAPAN LOGAM Cd (II) PADA LIMBAH CAIR INDUSTRI PELAPISAN LOGAM." Jurnal Teknik Kimia USU 5, no. 4 (January 24, 2017): 57–63. http://dx.doi.org/10.32734/jtk.v5i4.1556.

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The aim of this research is to study the effect of activation processes to iodine number of ngapi nut peel adsorbent and to study the optimum adsorbent mass to reduce metallic Cadmium (Cd) concentration in electroplating wastewater. Ngapi nut peel was cleaned and mashed to a size of 100 mesh of sieve tray and then activated using nitric acid (HNO3) 4 N with specific ratio ngapi nut peel : nitric acid while heated at specific activation temperature and duration. Adsorbent dried in oven at specific temperature and duration of drying. Adsorbent with optimum iodine number then used in batch adsorption that carried out by using variations of mass in 50 mL of wastewater. The results showed that the optimum ratio of ngapi nut peel : nitric acid is 20:1 mg/mL at activation temperature 90°C, duration of activation 120 minutes, drying temperature 110 °C and duration of drying 120 minutes with iodine number 634.50 mg/g. The optimum mass of adsorbent is 1 g with capacity of adsorbent 1,326 mg/g.

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Joo, J., G. Du, J. Tsukamoto, and A. J. Epstein. "Stretching-induced crossover to the metallic state in iodine-doped polyacetylene samples." Synthetic Metals 88, no. 1 (April 1997): 1–6. http://dx.doi.org/10.1016/s0379-6779(97)80876-4.

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Besleaga, Cristina, Laura Elena Abramiuc, Viorica Stancu, Andrei Gabriel Tomulescu, Marian Sima, Liliana Trinca, Neculai Plugaru, et al. "Iodine Migration and Degradation of Perovskite Solar Cells Enhanced by Metallic Electrodes." Journal of Physical Chemistry Letters 7, no. 24 (December 2, 2016): 5168–75. http://dx.doi.org/10.1021/acs.jpclett.6b02375.

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34

LefÈvre, G., M. Alnot, J. J. Ehrhardt, and J. BessiÈre. "Uptake of Iodide by a Mixture of Metallic Copper and Cupric Compounds." Environmental Science & Technology 33, no. 10 (May 1999): 1732–37. http://dx.doi.org/10.1021/es981034y.

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35

Diaz, M. V. Pérez, J. Ch Abbé, and G. Duplâtre. "Positron annihilation studies in non-metallic solids: D-camphor and silver iodide." Physica Status Solidi (a) 109, no. 1 (September 16, 1988): 337–43. http://dx.doi.org/10.1002/pssa.2211090137.

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36

Umedov, Shodruz T., Anastasia V. Grigorieva, Alexey V. Sobolev, Alexander V. Knotko, Leonid S. Lepnev, Efim A. Kolesnikov, Dmitri O. Charkin, and Andrei V. Shevelkov. "Controlled Reduction of Sn4+ in the Complex Iodide Cs2SnI6 with Metallic Gallium." Nanomaterials 13, no. 3 (January 20, 2023): 427. http://dx.doi.org/10.3390/nano13030427.

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Metal gallium as a low-melting solid was applied in a mixture with elemental iodine to substitute tin(IV) in a promising light-harvesting phase of Cs2SnI6 by a reactive sintering method. The reducing power of gallium was applied to influence the optoelectronic properties of the Cs2SnI6 phase via partial reduction of tin(IV) and, very likely, substitute partially Sn4+ by Ga3+. The reduction of Sn4+ to Sn2+ in the Cs2SnI6 phase contributes to the switching from p-type conductivity to n-type, thereby improving the total concentration and mobility of negative-charge carriers. The phase composition of the samples obtained was studied by X-ray diffraction (XRD) and 119Sn Mössbauer spectroscopy (MS). It is shown that the excess of metal gallium in a reaction melt leads to the two-phase product containing Cs2SnI6 with Sn4+ and β-CsSnI3 with Sn2+. UV–visible absorption spectroscopy shows a high absorption coefficient of the composite material.

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37

Middleburgh, S. C., D. M. King, and G. R. Lumpkin. "Atomic scale modelling of hexagonal structured metallic fission product alloys." Royal Society Open Science 2, no. 4 (April 2015): 140292. http://dx.doi.org/10.1098/rsos.140292.

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Noble metal particles in the Mo-Pd-Rh-Ru-Tc system have been simulated on the atomic scale using density functional theory techniques for the first time. The composition and behaviour of the epsilon phases are consistent with high-entropy alloys (or multi-principal component alloys)—making the epsilon phase the only hexagonally close packed high-entropy alloy currently described. Configurational entropy effects were considered to predict the stability of the alloys with increasing temperatures. The variation of Mo content was modelled to understand the change in alloy structure and behaviour with fuel burnup (Mo molar content decreases in these alloys as burnup increases). The predicted structures compare extremely well with experimentally ascertained values. Vacancy formation energies and the behaviour of extrinsic defects (including iodine and xenon) in the epsilon phase were also investigated to further understand the impact that the metallic precipitates have on fuel performance.

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38

Söderlind, Per, Aurélien Perron, Emily E. Moore, Alexander Landa, and Tae Wook Heo. "Thermodynamics of Uranium Tri-Iodide from Density-Functional Theory." Applied Sciences 10, no. 11 (June 5, 2020): 3914. http://dx.doi.org/10.3390/app10113914.

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Density-functional theory (DFT) is employed to investigate the thermodynamic and ground-state properties of bulk uranium tri-iodide, UI3. The theory is fully relativistic and electron correlations, beyond the DFT and generalized gradient approximation, are addressed with orbital polarization. The electronic structure indicates anti-ferromagnetism, in agreement with neutron diffraction, with band gaps and a non-metallic system. Furthermore, the formation energy, atomic volume, crystal structure, and heat capacity are calculated in reasonable agreement with experiments, whereas for the elastic constants experimental data are unavailable for comparison. The thermodynamical properties are modeled within a quasi-harmonic approximation and the heat capacity and Gibbs free energy as functions of temperature agree with available calculation of phase diagram (CALPHAD) thermodynamic assessment of the experimental data.

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Curtius, H., and Z. Kattilparampil. "Sorption of iodine on Mg-Al-layered double hydroxide." Clay Minerals 40, no. 4 (December 2005): 455–61. http://dx.doi.org/10.1180/0009855054040183.

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AbstractFrom leaching experiments with metallic uranium-aluminium material test reactor fuel elements in repository-relevant MgCl2-rich salt brines, a Mg-Al-layered double hydroxide with chloride as interlayer anion was identified as a crystalline secondary phase component. In the present study, this Mg-Al-Cl-layered double hydroxide (Mg-Al-Cl-LDH) was synthesized and its ability to adsorb iodine was evaluated. The adsorption of I– was rapid, and equilibrium for an initial concentration of 4.25 x 10-5 mole/l was obtained within 48 h. Further results indicated that the adsorption isotherm for I– retention could be fitted to Freundlich and Dubinin-Radushkevich equations. The values obtained indicate that iodine is adsorbed on Mg-Al-Cl-LDH by an anion- exchange process. The adsorption of I– was also studied as a function of pH. In the pH range between 3.5 and 8.5, the adsorption was independent of the pH. The effects of competiting anions were investigated using an MgCl2-solution instead of water, and indicate that chloride anions have a greater affinity towards the Mg-Al-Cl-layered double hydroxide than iodine.

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40

Bulgariu, Laura, Dumitru Bulgariu, Ioan Sârghie, and Theodor Măluṭan. "Cd(II) extraction in PEG-based two-phase aqueous systems in the presence of iodide ions. Analysis of PEG-rich solid phases." Open Chemistry 5, no. 1 (March 1, 2007): 291–302. http://dx.doi.org/10.2478/s11532-006-0048-7.

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AbstractCd(II) plus iodide species were extracted into PEG-rich phases in the aqueous PEG(1550)-(NH4)2SO4 system at pH 2.05–7.12. IR spectra show that increasing (NH4)2SO4 solution acidity does not protonate PEG ether oxygen atoms, but decreases water content in the PEG-rich phases. Metallic species’ extraction into the PEG predominantly alters how water molecules bind to polymer chains; the changes in their absorption bands depend on pH. Microscopy shows that “fixation” of the extracted metal in the PEG-rich phase occurs by specific interactions which depend on the species. These also determine changes in the polymer chains’ conformation.

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Tang, Ying Tong, Xu Pan, Song Yuan Dai, Chang Neng Zhang, and Huan Jun Tian. "Research Progress of the Counter Electrode in Dye-Sensitized Solar Cells." Key Engineering Materials 451 (November 2010): 63–78. http://dx.doi.org/10.4028/www.scientific.net/kem.451.63.

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This review covers recent research on counter electrodes using platinum (Pt), carbon and conducting polymers as catalysts for the reduction of triiodide in the dye-sensitized solar cell. Different types of counter electrode preparation methods and their advantages and disadvantages are compared. The inadequacy of the counter electrode with the precious metals and the advantages of the non-metallic-type counter electrode are pointed out. Especially, recent research on the Pt counter electrode in our group is discussed concerning with the reaction mechanism of the triiodide (I3-)/ iodide (I-) redox couple on the Pt counter electrode.

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Makhlouf, Mohamed Th, and Zarif H. Khalil. "Effect of the Molecular Structure of Cyanine Dye on the Electrochemical Corrosion Behaviour of Metallic Copper in Nitric Acid Solution." Collection of Czechoslovak Chemical Communications 58, no. 9 (1993): 2003–12. http://dx.doi.org/10.1135/cccc19932003.

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The effect of 2-(2-hydroxystyryl)quinolinium-1-ethyl iodide (I) and 4-(2-hydroxystyryl)quinolinium-1-ethyl iodide (II) cyanide dyes on the corrosion behaviour of copper metal in nitric acid solution has been studied. Weight loss measurement, galvanostatic polarization curves, open-circuit potential variation of copper electrode with time and the cathodic protective current values indicate that cyanine dye I gives better anticorrosive effect than dye II. The inhibition effect in case of the two cyanine dyes is more pronounced in case of the addition of dye to the corrosion medium than that obtained in case of copper metal coated by dye thin film (previously treated in dye solution) before immersion in corrosive medium.

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Bogdanov, S. P. "Synthesis of solid solutions in double metallic systems by the iodine-transport method." Glass Physics and Chemistry 39, no. 4 (July 2013): 448–52. http://dx.doi.org/10.1134/s1087659613040044.

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44

Zhao, Yu, Nadège Bonnet Mercier, and Hye Ryung Byon. "An Aqueous Lithium-Iodine Battery with Solid Polymer Electrolyte-Coated Metallic Lithium Anode." ChemPlusChem 80, no. 2 (April 15, 2014): 344–48. http://dx.doi.org/10.1002/cplu.201402038.

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45

Bose, Sarita, and K. R. Genwa. "Fabrication of DSSCs with biebrich scarlet, alizarine cyanine green and evans blue dyes as new organic photosensitizers." Materials Science-Poland 36, no. 4 (December 1, 2018): 655–61. http://dx.doi.org/10.2478/msp-2018-0077.

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AbstractDye sensitized solar cells are photoelectrochemical cells mimicking photosynthesis. They represent a new generation of solar cells which is intensively studied nowadays. This cell was fabricated using TiO2 nanoparticles coated on FTO glass, organic dyes as photosensitizer, PEDOT:PSS as counter electrode and iodide-triiodide as electrolyte. The present work aims at the use of low cost new organic dyes viz. biebrich scarlet, alizarine cyanine green and evans blue for DSSC as an alternative to metallic dyes. In the present work, I-V characteristics, energy or power conversion efficiencies of the dyes have been studied in different solvents. The photoelectrochemical properties of the dyes were observed under 1.5 AM condition.

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Grosu, Sergio, Zhen J. Wang, Markus M. Obmann, Mark D. Sugi, Yuxin Sun, and Benjamin M. Yeh. "Reduction of Peristalsis-Related Streak Artifacts on the Liver with Dual-Layer Spectral CT." Diagnostics 12, no. 4 (March 23, 2022): 782. http://dx.doi.org/10.3390/diagnostics12040782.

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Background: Peristalsis-related streak artifacts on the liver compromise image quality and diagnostic accuracy. Purpose: To assess dual-layer spectral-detector computed tomography (CT) image reconstructions for reducing intestinal peristalsis-related streak artifacts on the liver. Methods: We retrospectively evaluated 220 contrast-enhanced abdominal dual-energy CT scans in 131 consecutive patients (mean age: 68 ± 10 years, 120 men) who underwent routine clinical dual-layer spectral-detector CT imaging (120 kVp, 40 keV, 200 keV, virtual non-contrast (VNC), iodine images). Two independent readers evaluated bowel peristalsis streak artifacts on the liver qualitatively on a five-point Likert scale (1 = none to 5 = severe) and quantitatively by depth of streak artifact extension into the liver and measurements of Hounsfield Unit and iodine concentration differences from normal liver. Artifact severity between image reconstructions were compared by Wilcoxon signed-rank and paired t-tests. Results: 12 scans were excluded due to missing spectral data, artifacts on the liver originating from metallic foreign materials, or oral contrast material. Streak artifacts on the liver were seen in 51/208 (25%) scans and involved the left lobe only in 49/51 (96%), the right lobe only in 0/51 (0%), and both lobes in 2/51 (4%) scans. Artifact frequency was lower in iodine than in 120 kVp images (scans 18/208 vs. 51/208, p < 0.001). Artifact severity was less in iodine than in 120 kVp images (median score 1 vs. 3, p < 0.001). Streak artifact extension into the liver was shorter in iodine than 120 kVp images (mean length 2 ± 4 vs. 12 ± 5 mm, p < 0.001). Hounsfield Unit and iodine concentration differed significantly between bright streak artifacts and normal liver in 120 kVp, 40 keV, 200 keV, and VNC images (p < 0.001, each), but not in iodine images (p = 0.23). Conclusion: Intestinal peristalsis-related streak artifacts commonly affect the left liver lobe at CT and can be substantially reduced by viewing iodine dual-energy CT image reconstructions.

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Mansouri, Elham, Asghar Mesbahi, Mohammad Saeid Hejazi, Vahideh Tarhriz, Hamed Hamishehkar, and Farshad Seyednejad. "A Comprehensive Analysis of Radiosensitization Properties of Metallic Nanoparticles in Brachytherapy of Gastric Adenocarcinoma by I-125 Seed: A Simulation Study by MCNPX and MCNP6 Codes." Magnetochemistry 8, no. 9 (August 31, 2022): 97. http://dx.doi.org/10.3390/magnetochemistry8090097.

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Purpose: In the current study, we aimed to look into the macroscopic and microscopic dose enhancement effect of metallic nanoparticles in interstitial brachytherapy of gastric adenocarcinoma by Iodine-125 source using a nano-lattice model in MCNPX (2.7) and MCNP6.1 codes. Materials and methods: Based on a nano-lattice simulation model containing a radiation source and a tumor tissue with cellular compartments loaded with 7 mg/g spherical nanoparticles, the microscopic and macroscopic levels of energy deposition by the secondary electrons was estimated. Results: The results show that the values of macroscopic DEF are higher than microscopic DEF values and the macroscopic DEF values decrease by increasing the distance from the surface of brachytherapy source. Accordingly, it could be noted that gold nanoparticles have the highest radiosensitization effect among the other nanoparticles and the related DEF value is close to the resultant DEF values for bismuth nanoparticles. Moreover, the results revealed a remarkable discrepancy between the DEF and secondary electron spectra calculated by MCNPX (2.7) and MCNP6.1 codes, which could be justified by the difference in energy cut-off and electron transport algorithms of two codes. Conclusions: According to the both MCNPX (2.7) and MCNP6.1 outputs, it could be concluded that the presence of metallic nanoparticles in the tumor tissue of gastric adenocarcinoma increases the physical effectiveness of brachytherapy by I-125 source. This study aims to provide recommendations for future preclinical studies. Actually, the results presented herein give a physical view of radiosensitization potential of different metallic nanoparticles and could be considered in design of analytical and experimental radiosensitization studies in tumor regions using various radiotherapy modalities in the presence of heavy nanomaterials.

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Wu, Zefei, Yu Han, Rui Huang, Xiaolong Chen, Yanqing Guo, Yuheng He, Wei Li, Yuan Cai, and Ning Wang. "Semimetallic-to-metallic transition and mobility enhancement enabled by reversible iodine doping of graphene." Nanoscale 6, no. 21 (September 4, 2014): 13196–202. http://dx.doi.org/10.1039/c4nr03183k.

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Yanada, Reiko, Nobuyuki Negoro, Kiyoshi Bessho, and Kazuo Yanada. "Metallic Samarium and Iodine in Alcohol. Deacylation and Dealkyloxycarbonylation of Protected Alcohols and Lactams." Synlett 1995, no. 12 (December 1995): 1261–63. http://dx.doi.org/10.1055/s-1995-5252.

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Nkele, Agnes C., Ugochi K. Chime, Assumpta C. Nwanya, Daniel Obi, Rose U. Osuji, R. Bucher, Paul M. Ejikeme, Malik Maaza, and Fabian I. Ezema. "Role of metallic dopants on the properties of copper (1) iodide nanopod-like structures." Vacuum 161 (March 2019): 306–13. http://dx.doi.org/10.1016/j.vacuum.2018.12.049.

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