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Auteur : Grafiati
Publié le 11 septembre 2023

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1

Giun Tan, Woan, Wei Ming Ng, Jit Kang Lim et Hui Xin Che. « Plantain Peel Mediated Green Synthesis Iron Oxide Nanoparticles, Surface Functionalization, and Them Performance towards Methylene Blue and Methyl Orange Dye Removal ». International Journal of Engineering & ; Technology 7, no 3.36 (6 mai 2018) : 101. http://dx.doi.org/10.14419/ijet.v7i3.36.29087.

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Currently, green synthesis approach is used as the biocompatible, eco-friendly, and sustainable alternative of conventional approaches to synthesize iron oxide nanoparticles. In this work, magnetic iron oxide nanoparticles were synthesized by using plantain peel extract via green and biogenic approach. The surface of green synthesized iron oxide nanoparticles was functionalized to increase the stability of the nanoparticles and maintain the coexisting of both magnetic and catalytic property of the nanoparticles at the same time. Two kinds of surface functionalization structures were synthesized in this study, included silica core-iron oxide shell nanoparticles and silica core-PDDA polymerized iron oxide shell nanoparticles. The main concern of this study is the performance of bare and surface functionalized green synthesized nanoparticles. Methylene blue and methyl orange dyes were used as the model of dye removal test to indicate the feasibility of the synthesized nanocomposites. In summary, surface functionalized nanocomposites achieved higher dye removal efficiency than bare green synthesized iron oxide nanoparticles in both the methylene blue and methyl orange degradation test. Methylene blue dye was removed in higher rate than methyl orange dye due to the presence of negatively charged iron oxide nanoparticles with both the adsorptive and catalytic properties. At last, the components present in plantain peel extract were confirmed by using Fourier Transform Infrared Spectroscopy.
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Jahangir, H. Syed, T. Tamil Kumar, M. Mary Concelia et R. Alamelu. « Green Synthesis, Characterization & ; Antibacterial Studies of Silver (Ag) and Zinc Oxide (Zno) Nanoparticles ». Journal of Pure and Applied Microbiology 14, no 3 (3 septembre 2020) : 1999–2008. http://dx.doi.org/10.22207/jpam.14.3.39.

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Green synthesis nanoparticles were considered as an alternative effective resource instead of chemically engineered metal oxide nanoparticles. Using leaf extracts for green synthesis, essential for the reduction and oxidation process of the metals. Phyllanthus niruri (L.) and Aristolochia indica (L.) leaf extracts were used to synthesize yellowish brown coloured silver (Ag) and white coloured zinc oxide (ZnO) nanoparticles. Synthesized green nanoparticles characterized by different spectroscopic analysis (XRD, XPS, FTIR, PL) and TEM. Characterization results confirmed the particles morphology, size, structure and also their optical and photonic properties. Three different concentrations of Ag and ZnO NPs were analysed against three (gram positive) and five (gram negative) bacteria. Increased levels of green synthesized Ag and ZnO NPs showed increased zone of inhibition than amoxicillin (positive control). Our study proved that the green synthesized Ag and ZnO NPs showed similar unique physical and chemical properties with metal oxide nanoparticles but less toxic while their discharge into the ecosystem.
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Joel T, Jesse, et Jesvin Shobini. « A Plausible Antibacterial Green Synthesized AgNPs from Tridax procumbens Leaf-flower Extract ». Journal of Pure and Applied Microbiology 12, no 4 (30 décembre 2018) : 2135–42. http://dx.doi.org/10.22207/jpam.12.4.51.

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Kausar, Ayesha, Ishaq Ahmad, Tingkai Zhao, M. H. Eisa, O. Aldaghri, Meenal Gupta et Patrizia Bocchetta. « Green-Synthesized Graphene for Supercapacitors—Modern Perspectives ». Journal of Composites Science 7, no 3 (8 mars 2023) : 108. http://dx.doi.org/10.3390/jcs7030108.

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Graphene is a unique nanocarbon nanostructure, which has been frequently used to form nanocomposites. Green-synthesized graphene has been focused due to environmentally friendly requirements in recent technological sectors. A very important application of green-synthesized graphene-based nanocomposite has been observed in energy storage devices. This state-of-the-art review highlights design, features, and advanced functions of polymer/green-synthesized graphene nanocomposites and their utility in supercapacitor components. Green graphene-derived nanocomposites brought about numerous revolutions in high-performance supercapacitors. The structural diversity of conjugated polymer and green graphene-based nanocomposites has facilitated the charge transportation/storage capacity, specific capacitance, capacitance retention, cyclability, and durability of supercapacitor electrodes. Moreover, the green method, graphene functionality, dispersion, and matrix–nanofiller interactions have affected supercapacitance properties and performance. Future research on innovative polymer and green graphene-derived nanocomposites may overcome design/performance-related challenging factors for technical usages.
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Kothari, Richa, et Anjali Soni. « GREEN SYNTHESIS OF CHROMIUM OXIDE NANOPARTICLES USING CHROMIUM (III) COMPLEX AS A SINGLE ROUTE PRECURSOR : ANTI-OXIDANT ACTIVITY ». RASAYAN Journal of Chemistry 15, no 02 (2022) : 1325–39. http://dx.doi.org/10.31788/rjc.2022.1526700.

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Green synthesis of metallic nanoparticles using plant sources has become an excellent substitute for conventional chemical synthetic methods. Nowadays, nano biotechnology is growing at a very fast rate due to its various possible application in the pharmaceutical biomedical, textile, paper industries. In our study, we have reported the green synthesis of chalcogenide nanostructure pharmacologically active chromium oxide (Cr2O3) nanoparticles using synthesized chromium (III) complex as a single route precursor. The synthesized chromium (III) complex was reacted with an aqueous extract of cinnamon bark for the green synthesis of Cr2O3 nanoparticles. In the present study, we aimed to synthesize chromium oxide nanoparticles (Cr2O3 NPs) through a facile low-cost, eco-friendly route. In this method, we use the aqueous environment for green synthesize of Cr2O3 NPs because the use of an aqueous medium plays a very important role in reducing time, reducing minimum possibilities of side reactions and proper execution of conversions of synthesized Cr(III) complex into a good quality of Cr2O3 NPs in a very less time. The synthesized chromium (III) complex and green synthesized Cr2O3 NPs were thoroughly analyzed through various structural, morphological, electronic, vibrational and pharmacological characterization techniques. Powdered X-ray diffraction studies confirm the formation of well-defined equip spaced crystalline nanoparticles of chromium oxide. Transmission electron microscopy exhibits oval-shaped structure of Cr2O3 NPs with an average particle size of 48 nm. Sharp electronic absorptions ends at 345nm for Cr(III) complex and at 429nm indicates the synthesis of good quality of chromium(III) complex and Cr2O3 NPs. The FT-IR spectral studies confirmed the presence of Cr-O stretching, N-H bonding and C=O stretching vibrations in synthesized Cr(III) complex was performed to investigate the thermal stability of the complex. The Cr(III) complex is stable up to 350ºC. The effective pharmacological activities like in vitro antimicrobial and antioxidant activities explained the presence of strong electron-withdrawing and electronwithdrawing groups in synthesized chromium (III) complex. The green synthesis of Cr2O3 NPs via aqueous extract of cinnamon back in proper stoichiometric ratio is a good method for synthesizing highly effective bioactive agents which will be considered as a good drug candidate for various biological applications in future for various biomedical applications
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Roy, Arpita, Vishwajeet Singh, Sukriti Sharma, Daoud Ali, Abul Kalam Azad, Gokhlesh Kumar et Talha Bin Emran. « Antibacterial and Dye Degradation Activity of Green Synthesized Iron Nanoparticles ». Journal of Nanomaterials 2022 (17 janvier 2022) : 1–6. http://dx.doi.org/10.1155/2022/3636481.

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Nanoparticles have a wide range of applications in various fields such as cosmetics, pharmaceuticals, and agrochemicals. Synthesis of nanoparticles using plant extract is a very efficient, cost-effective, useful, and environmentally friendly method. A plant extract acts as a reducing agent in the formation of nanoparticles. Catharanthus roseus is one of the potential plants for biosynthesis of nanoparticles due to its easy availability. In the present study, the Catharanthus roseus plant extract was used to synthesize iron nanoparticles. UV-vis spectroscopy, DLS, and FTIR were performed for characterization of synthesized nanoparticles. Further antibacterial and dye degrading properties of synthesized iron nanoparticles have been investigated. It was found that Catharanthus roseus-synthesized iron nanoparticles showed antibacterial activity against E. coli and dye degradation activity against methyl orange dye.
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Sivanesan, Iyyakkannu, Judy Gopal, Manikandan Muthu, Juhyun Shin, Selvaraj Mari et Jaewook Oh. « Green Synthesized Chitosan/Chitosan Nanoforms/Nanocomposites for Drug Delivery Applications ». Polymers 13, no 14 (9 juillet 2021) : 2256. http://dx.doi.org/10.3390/polym13142256.

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Chitosan has become a highlighted polymer, gaining paramount importance and research attention. The fact that this valuable polymer can be extracted from food industry-generated shell waste gives it immense value. Chitosan, owing to its biological and physicochemical properties, has become an attractive option for biomedical applications. This review briefly runs through the various methods involved in the preparation of chitosan and chitosan nanoforms. For the first time, we consolidate the available scattered reports on the various attempts towards greens synthesis of chitosan, chitosan nanomaterials, and chitosan nanocomposites. The drug delivery applications of chitosan and its nanoforms have been reviewed. This review points to the lack of systematic research in the area of green synthesis of chitosan. Researchers have been concentrating more on recovering chitosan from marine shell waste through chemical and synthetic processes that generate toxic wastes, rather than working on eco-friendly green processes—this is projected in this review. This review draws the attention of researchers to turn to novel and innovative green processes. More so, there are scarce reports on the application of green synthesized chitosan nanoforms and nanocomposites towards drug delivery applications. This is another area that deserves research focus. These have been speculated and highlighted as future perspectives in this review.
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Alsaiari, Norah Salem, Fatimah Mohammed Alzahrani, Abdelfattah Amari, Haitham Osman, Hamed N. Harharah, Noureddine Elboughdiri et Mohamed A. Tahoon. « Plant and Microbial Approaches as Green Methods for the Synthesis of Nanomaterials : Synthesis, Applications, and Future Perspectives ». Molecules 28, no 1 (3 janvier 2023) : 463. http://dx.doi.org/10.3390/molecules28010463.

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The unique biological and physicochemical characteristics of biogenic (green-synthesized) nanomaterials (NMs) have attracted significant interest in different fields, with applications in the agrochemical, food, medication delivery, cosmetics, cellular imaging, and biomedical industries. To synthesize biogenic nanomaterials, green synthesis techniques use microorganisms, plant extracts, or proteins as bio-capping and bio-reducing agents and their role as bio-nanofactories for material synthesis at the nanoscale size. Green chemistry is environmentally benign, biocompatible, nontoxic, and economically effective. By taking into account the findings from recent investigations, we shed light on the most recent developments in the green synthesis of nanomaterials using different types of microbes and plants. Additionally, we cover different applications of green-synthesized nanomaterials in the food and textile industries, water treatment, and biomedical applications. Furthermore, we discuss the future perspectives of the green synthesis of nanomaterials to advance their production and applications.
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Anbarasu, A., P. Karnan, N. Deepa et R. Usha. « CARICA PAPAYA MEDIATED GREEN SYNTHESIZED SILVER NANOPARTICLES ». International Journal of Current Pharmaceutical Research 10, no 3 (17 mai 2018) : 15. http://dx.doi.org/10.22159/ijcpr.2018v10i3.27221.

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Objective: The present study was designed to biosynthesize NPs from leaves to study the reducing Ag+ions and stabilizing the particles and confirm AgNP synthesis by using various spectroscopy and microscopic methods.Methods: Bio-inspired AgNPs were rapidly synthesized at room temperature using fresh aqueous leaf extract of Carica papaya. A green and low-cost synthesis was effective in the formation of stable crystalline NPs in the solution. Amine, alkene and alkyl halides groups present in the Carica papaya leaf extract functioned as reducing as well as a stabilizing agent to produce shape controlled AgNPs.Results: SPR confirmed the formation of AgNPs in UV-Visible spectra at 445.7 nm. The XRD result also showed the presence of elemental Ag+as a crystalline nature. Study the functional groups responsible for the bio reduction of Ag+. HE-TEM and FE-SEM with EDX image showed spherical crystalline AgNPs.Conclusion: Hence, the plant-based bio AgNPs could be used in biomedical applications.
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Ahmad, Razi, Nafeesa Khatoon et Meryam Sardar. « Antibacterial Effect of Green Synthesized TiO2 Nanoparticles ». Advanced Science Letters 20, no 7 (1 juillet 2014) : 1616–20. http://dx.doi.org/10.1166/asl.2014.5563.

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Siegel, Jakub, Marek Staszek, Markéta Polívková, Alena Řezníčková, Silvie Rimpelová et Václav Švorčík. « Green Synthesized Noble Metals for Biological Applications ». Materials Today : Proceedings 3, no 2 (2016) : 608–16. http://dx.doi.org/10.1016/j.matpr.2016.01.098.

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Bindhu, M. R., et M. Umadevi. « Antibacterial activities of green synthesized gold nanoparticles ». Materials Letters 120 (avril 2014) : 122–25. http://dx.doi.org/10.1016/j.matlet.2014.01.108.

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Park, Sang-Eon, et Kwang-Min Choi. « Green catalysis by microwave synthesized nanostructured materials ». Journal of Physics and Chemistry of Solids 69, no 5-6 (mai 2008) : 1501–4. http://dx.doi.org/10.1016/j.jpcs.2007.10.119.

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Bindhu, M. R., V. G. Sathe et M. Umadevi. « SERS Activities of Green Synthesized Silver Nanoparticles ». Journal of Cluster Science 26, no 5 (1 janvier 2015) : 1451–61. http://dx.doi.org/10.1007/s10876-014-0825-y.

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Deb, S., P. K. Kalita et P. Datta. « Optical properties of green synthesized ZnO nanocomposites ». Indian Journal of Physics 87, no 12 (25 juillet 2013) : 1177–82. http://dx.doi.org/10.1007/s12648-013-0365-6.

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Roopan, Selvaraj Mohana, Jeyakannu Palaniraja, Ganesh Elango, Prabhakarn Arunachalam et R. Sudhakaran. « Catalytic application of non-toxic Persia americana metabolite entrapped SnO2nanoparticles towards the synthesis of 3,4-dihydroacridin-1(2H)-ones ». RSC Advances 6, no 25 (2016) : 21072–75. http://dx.doi.org/10.1039/c5ra25975d.

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Althomali, Arwa, Maha H. Daghestani, Fatimah Basil Almukaynizi, Sabah Ahmed Al-Zahrani, Manal A. Awad, Nada M. Merghani, Wadha I. Bukhari et al. « Anti-colon cancer activities of green-synthesized Moringa oleifera–AgNPs against human colon cancer cells ». Green Processing and Synthesis 11, no 1 (1 janvier 2022) : 545–54. http://dx.doi.org/10.1515/gps-2022-0052.

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Abstract The anticancer activity of silver nanoparticles (AgNPs) is well known to be synthesized using green-synthesized methods, although its mechanism of action is not understood fully. Moringa oleifera leaves were used as reducing and stabilizing agents to synthesize AgNPs. Green-synthesized AgNPs were characterized using ultraviolet-visible spectroscopy, dynamic light scattering, transmission electronic microscopy, scanning electronic microscopy, Fourier transform infrared, and energy-dispersive X-ray spectroscopy analyses. The synthesized nanoparticles were then characterized by their anticancer properties by performing a 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The real-time polymerase chain reaction was used to check the expression levels of the four genes (β-catenin, adenomatous polyposis coli (APC), and lipoprotein receptor-related proteins 5 and 6 (LRP5/6)). The synthesized nanoparticles were 25 nm on average and spherical in shape and aggregated form. Noteworthy cytotoxicity is how green-synthesized M. oleifera–AgNPs were observed in comparison with the M. oleifera leaf extract against a cancerous cell line. The M. oleifera–AgNPs decreased the expression of CTNNB1 and LRP6 genes, while the LRP5 gene expression increased in both cell lines. With treatment, the APC gene expression decreased in SW480 but increased in HTC116. Our results imply that AgNPs synthesized by M. oleifera extract could be an ideal strategy to combat colon cancer.
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Alimohammadi, Vahid, Seyyed Ali Seyyed Ebrahimi, Faezeh Kashanian, Zahra Lalegani, Mehran Habibi-Rezaei et Bejan Hamawandi. « Hydrophobic Magnetite Nanoparticles for Bioseparation : Green Synthesis, Functionalization, and Characterization ». Magnetochemistry 8, no 11 (28 octobre 2022) : 143. http://dx.doi.org/10.3390/magnetochemistry8110143.

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In this study, three types of hydrophobized alkyl-modified magnetic nanoparticles (MNPs) comprising direct alkylated-MNPs (A-MNPs), silica-mediated alkyl MNPs (A-SiMNPs), and arginine (Arg)-mediated alkyl MNPs (A-RMNPs) were synthesized successfully. For this purpose, the co-precipitation method was used to synthesize, and octadecyl trimethoxy silane (OTMS) was used as a functionalizing agent. Accordingly, the hydrophobic octadecyl moieties were connected to MNPs. The nanoparticles (NPs) were characterized by XRD, SEM, FTIR, CHN, DLS, and zeta potential analyses. The synthesized coated MNPs represented a decrease in surface charge and magnetization alongside increased surface hydrophobicity and size. It was revealed that the alkylation process was successfully performed to all three MNPs, but A-SiMNPs showed the highest hydrophobicity. Additionally, the novel A-RMNPs, as the most biocompatible type, and A-MNPs showed the highest magnetization among the synthesized MNPs. The results indicate that synthesized NPs can play an important role in bio applications. However, it was revealed that alkyl chains are easily connected to all three MNPs, and that A-MNPs contained the highest alkyl chains and could affect the re-folding and denaturation process of recombinant proteins.
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Rezaeian, Masoud, Homa Afjoul, Amir Shamloo, Ali Maleki et Neda Afjoul. « Green synthesis of silica nanoparticles from olive residue and investigation of their anticancer potential ». Nanomedicine 16, no 18 (août 2021) : 1581–93. http://dx.doi.org/10.2217/nnm-2021-0040.

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Aim: To synthesize silica nanoparticles (SNPs) from olive residue with anticancer properties. Methods: SNPs were synthesized from olive residue ash (ORA). After characterization, cytotoxicity of the SNPs was assessed in vitro, with measurement of reactive oxygen species (ROS) levels. Results: The average diameter of the synthesized SNPs was 30–40 nm, and zeta potential analysis suggested they were stable. The synthesized SNPs were less cytotoxic than commercially available SNPs against fibroblast cells, and the cytotoxic effect on breast cancer cells was significantly higher compared with fibroblast cells. SNPs showed greater uptake into cancer cells where there was greater production of free radicals. Conclusion: SNPs synthesized from ORA have potential anticancer applications because they are more cytotoxic toward cancer cells than fibroblast cells.
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Bùi Thị Thu, Hà, Anh Vũ Tuấn et Hiếu Trần Bá. « TỔNG QUAN VỀ TỔNG HỢP XANH NANO BẠC SỬ DỤNG CHIẾT XUẤT THỰC VẬT VÀ ỨNG DỤNG TRONG LĨNH VỰC Y - DƯỢC ». VietNam Military Medical Unisversity 47, no 04-2022 (mai 2022) : 18–29. http://dx.doi.org/10.56535/jmpm.v2022050402.

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In the synthesis of nanoparticles, the green synthesis of silver nanoparticles has gained much attention in biomedicine and pharmacy due to their unique physicochemical and biological properties. The green synthesis method uses plant extracts, living organisms, or biomolecules as bioreducing and biocapping agents to synthesize nanoparticles. The green synthesized silver nanoparticles are biocompatible, ecofriendly, and cost-effective. This review aims to elucidate recent advances in the plant-mediated green synthesis of silver nanoparticles (GAgNP) and their potential in antibacterial, cosmetic, anti-cancer, diagnostic, and biosensor applications. * Keywords: Green synthesis; Silver nanoparticles; Plant extracts.
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Soni, Namita, et Soam Prakash. « Green Nanoparticles for Mosquito Control ». Scientific World Journal 2014 (2014) : 1–6. http://dx.doi.org/10.1155/2014/496362.

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Here, we have used the green method for synthesis of silver and gold nanoparticles. In the present study the silver (Ag) and gold (Au) nanoparticles (NPs) were synthesized by using the aqueous bark extract of Indian spice dalchini (Cinnamomum zeylanicum) (C. zyelanicumorC. verumJ. Presl). Additionally, we have used these synthesized nanoparticles for mosquito control. The larvicidal activity has been tested against the malaria vectorAnopheles stephensiand filariasis vectorCulex quinquefasciatus. The results were obtained using UV-visible spectrophotometer and the images were recorded with a transmission electron microscope (TEM). The efficacy tests were then performed at different concentrations and varying numbers of hours by probit analysis. The synthesized AgNPs were in spherical shape and average sizes (11.77 nm AgNPs and 46.48 nm AuNPs). The larvae ofAn. stephensiwere found highly susceptible to the synthesized AgNPs and AuNPs than theCx. quinquefasciatus. These results suggest that theC. zeylanicumsynthesized silver and gold nanoparticles have the potential to be used as an ideal ecofriendly approach for the control of mosquito.
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Jia, Yu, Yuji Hotta, Kimiyasu Sato, Koji Watari et Yoshinori Kanno. « Gelcasting of Mechanochemically Synthesized Hydroxyapatite ». Key Engineering Materials 280-283 (février 2007) : 1555–58. http://dx.doi.org/10.4028/www.scientific.net/kem.280-283.1555.

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Hydroxyapatite powders were prepared via mechanochemical synthesis method. The starting reagents for HAP powders were vibration ball milled for 2 h and then calcined at 800°C for 1 h. X-ray diffraction patterns and IR spectrum shown that pure crystalline apatite powder (HAP) was obtained. The as-synthesized powders were gelcasted and then sintered at 1200°C for 2 h. It was observed from SEM micrographs that the prepared green body has uniform microstructure. The bending strength of the dried green body was as high as 18 MPa that is enough to be machined into required form before sintering. The sintered ceramics has a density of 2.5 g/cm3 and a flexural strength of 72 MPa with a homogenous microstructure.
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Fikroh, Retno Aliyatul, Sabirin Matsjeh, Chairil Anwar et Beta Achromi Nurohmah. « GREEN SYNTHESIS OF HALOGEN SUBSTITUTED CHALCONE AGAINST CERVICAL CANCER (HeLa) CELL LINES ». INSECTA : Integrative Science Education and Teaching Activity Journal 4, no 1 (31 mai 2023) : 1–8. http://dx.doi.org/10.21154/insecta.v4i1.5876.

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Cervical cancer is the second leading cause of death in women. Many cancer treatments currently provide toxic effects on normal cells. Therefore, alternative treatment using chalcone derivatives has potent anticancer properties that can help reduce cancer side effects. Chalcone derivatives with halogen and methoxy groups in ring B can potentially inhibit cancer cells. This research aimed to synthesize halogen-substituted chalcone by a green chemistry approach and determine activity against cervical cancer (HeLa) cell lines. The Claisen-Schmidt reaction was used to synthesize 2'-hydroxy-2-bromo-4,5-dimethoxychalcone using a grinding technique. The purity of the synthesized compound was determined using thin-layer chromatography and melting range. The compounds' structures were characterized using FTIR, MS 1H, and 13C-NMR. The result showed that the synthesized compound was yielded in 53% as a yellow solid. In vitro cytotoxicity of the synthesized chalcone was evaluated by the MTT assay method. The IC50 of the compound was 67,23 μg/mL as a moderate activity inhibiting cervical cancer (HeLa) cell lines. Based on the IC50 value, this compound can be a candidate for anticancer against Cervical cancer (HeLa) cell lines.
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Widatalla, Hiba Abbas, Layla Fathi Yassin, Ayat Ahmed Alrasheid, Shimaa Abdel Rahman Ahmed, Marvit Osman Widdatallah, Sahar Hussein Eltilib et Alaa Abdulmoneim Mohamed. « Green synthesis of silver nanoparticles using green tea leaf extract, characterization and evaluation of antimicrobial activity ». Nanoscale Advances 4, no 3 (2022) : 911–15. http://dx.doi.org/10.1039/d1na00509j.

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Silver nanoparticles were synthesized using green tea leaf extract and were characterized using different analytical techniques. The synthesized nanoparticles showed antibacterial activity against Staphylococcus aureus and Klebsiella spp.
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Senthilkumar, P., S. Rashmitha, Priscilla Veera, C. Ignatious, C. SaiPriya et Antony Samrot. « Antibacterial Activity of Neem Extract and its Green Synthesized Silver Nanoparticles against Pseudomonas aeruginosa ». Journal of Pure and Applied Microbiology 12, no 2 (30 juin 2018) : 969–74. http://dx.doi.org/10.22207/jpam.12.2.60.

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Raji, Kaviyarasan, Vadivel Ramanan et Perumal Ramamurthy. « Facile and green synthesis of highly fluorescent nitrogen-doped carbon dots from jackfruit seeds and its applications towards the fluorimetric detection of Au3+ ions in aqueous medium and in in vitro multicolor cell imaging ». New Journal of Chemistry 43, no 29 (2019) : 11710–19. http://dx.doi.org/10.1039/c9nj02590a.

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Sharma, Arun Kumar, Kiran Rana, Sita Shrestha, Hari Bhakta Oli et Deval Prasad Bhattarai. « A comparative Study on Synthesis, Characterization and Antibacterial Activity of Green vis-a-vis Chemically Synthesized Silver Nanoparticles ». Amrit Research Journal 3, no 01 (23 décembre 2022) : 75–83. http://dx.doi.org/10.3126/arj.v3i01.50499.

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Green synthesis of silver nanoparticles is of great importance in the field of nanoscience and nanotechnology. Various phytochemical constituents present in whole or parts of plants can act as reducing, capping and stabilizing agents in the synthesis of silver nanoparticle (AgNPs) by green method. In this work, AgNPs have been successfully synthesized in the laboratory by chemical reduction and green method. NaBH4 was used as a reducing agent in chemical reduction method whereas Zingiber officinale leaf extract was used as reducing and capping agent in green method. The properties of as synthesized AgNPs by both green and chemical methods have been examined by UV-Vis spectroscopy, XRD and FTIR method. Besides these, biological activities of as synthesized AgNPs were tested against Bacillus subtilis and Escherichia coli which exhibited remarkable antimicrobial activities in green method. Based on the result, it is found that AgNPs synthesized from ginger plant (Zingiber officinale) leaf extract exhibited significant antimicrobial effect than that by chemically synthesized AgNPs.
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Barman, Subhodeep, Rahul Das, Biplab Kumar Mandal, Suranjan Sikdar et Abhijit Biswas. « Elastic properties of green synthesized Al0.15Zn0.85O nano-discs ». Materials Today : Proceedings 43 (2021) : 3862–66. http://dx.doi.org/10.1016/j.matpr.2020.12.1178.

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Emam, Hossam E. « Accessibility of green synthesized nanopalladium in water treatment ». Results in Engineering 15 (septembre 2022) : 100500. http://dx.doi.org/10.1016/j.rineng.2022.100500.

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Chandra Sekhar Boyapati, Purna, Kolla Srinivas et Syed Akhil. « Green synthesized graphene-hydroxyapatite nanocomposites for bioimplant applications ». Materials Letters 327 (novembre 2022) : 133059. http://dx.doi.org/10.1016/j.matlet.2022.133059.

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Singh, Tejasvi, Athira Jayaprakash, Mohammad Alsuwaidi et Asha Anish Madhavan. « Green synthesized gold nanoparticles with enhanced photocatalytic activity ». Materials Today : Proceedings 42 (2021) : 1166–69. http://dx.doi.org/10.1016/j.matpr.2020.12.531.

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Daniel, S. C. G., J. Abirami, S. Kumaran et M. Sivakumar. « Microbicidal Tissue Paper Using Green Synthesized Silver Nanoparticles ». Current Nanoscience 11, no 1 (1 décembre 2014) : 64–68. http://dx.doi.org/10.2174/1573413710666140909211129.

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Roy, Swarup. « Green Synthesized Gold Nanoparticles : Study of Antimicrobial Activity ». Journal of Bionanoscience 11, no 2 (1 avril 2017) : 131–35. http://dx.doi.org/10.1166/jbns.2017.1432.

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Mahmud, Sakil, Md Nahid Pervez, Mst Zakia Sultana, Md Ahsan Habib et Hui-Hong Liu. « Wool Functionalization by Using Green Synthesized Silver Nanoparticles ». Oriental Journal of Chemistry 33, no 5 (25 octobre 2017) : 2198–208. http://dx.doi.org/10.13005/ojc/330507.

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Rajamani, Ranjithkumar, Selvam Kuppusamy et M. Shanmugavadivu. « Antibacterial Textile Finishing via Green Synthesized Silver Nanoparticles ». Journal of Green Science and Technology 1, no 2 (1 décembre 2013) : 111–13. http://dx.doi.org/10.1166/jgst.2013.1025.

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Iqbal, Muhammad, Naveed Iqbal Raja, Mubashir Hussain, Rashid Iqbal, Sunbal Khalil Chaudhari, Muhammad Asim Sultan, Ahmed Muneeb et Muhammad Ejaz. « Morphological Fabrication of Immobilized Green Synthesized Silver Nanoparticles ». Nanoscience and Nanotechnology Letters 10, no 11 (1 novembre 2018) : 1508–14. http://dx.doi.org/10.1166/nnl.2018.2818.

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Sharma, A. K., C. A. Pawar, N. R. Prasad, M. A. Yewale et D. B. Kamble. « Antimicrobial efficacy of green synthesized iron oxide nanoparticles ». Materials Research Express 5, no 7 (4 juillet 2018) : 075402. http://dx.doi.org/10.1088/2053-1591/aacf16.

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Siegel, Jakub, Kateřina Kolářová, Vladimíra Vosmanská, Silvie Rimpelová, Jindřich Leitner et Václav Švorčík. « Antibacterial properties of green-synthesized noble metal nanoparticles ». Materials Letters 113 (décembre 2013) : 59–62. http://dx.doi.org/10.1016/j.matlet.2013.09.047.

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Kumari, Sapana, Bhagat Ram, Dharamender Kumar, Sunita Ranote et Ghanshyam S. Chauhan. « Nanoparticles of oxidized-cellulose synthesized by green method ». Materials Science for Energy Technologies 1, no 1 (juin 2018) : 22–28. http://dx.doi.org/10.1016/j.mset.2018.04.003.

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Khan, Zia Ul Haq, Amjad Khan, Yongmei Chen, Noor S. Shah, Nawshad Muhammad, Arif Ullah Khan, Kamran Tahir et al. « Biomedical applications of green synthesized Nobel metal nanoparticles ». Journal of Photochemistry and Photobiology B : Biology 173 (août 2017) : 150–64. http://dx.doi.org/10.1016/j.jphotobiol.2017.05.034.

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Wang, Yu, et Hao Gong. « Cu2ZnSnS4 synthesized through a green and economic process ». Journal of Alloys and Compounds 509, no 40 (octobre 2011) : 9627–30. http://dx.doi.org/10.1016/j.jallcom.2011.07.041.

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Smitha, S. L., K. G. Gopchandran, Nimisha R. Nair, K. Madhavan Nampoothiri et T. R. Ravindran. « SERS and Antibacterial Active Green Synthesized Gold Nanoparticles ». Plasmonics 7, no 3 (2 mars 2012) : 515–24. http://dx.doi.org/10.1007/s11468-012-9337-5.

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Deb, Sujata, P. K. Kalita et P. Datta. « Opto-Electronic Properties of Green Synthesized ZnS Nanostructures ». International Journal of Nanoscience 17, no 04 (8 juillet 2018) : 1760032. http://dx.doi.org/10.1142/s0219581x17600328.

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ZnS nanostructures are synthesized by a wet chemical route using starch as green capping agent under nitrogen environment. The as-prepared nanostructures are characterized structurally, optically and electrically. X-ray diffraction (XRD) spectra confirm that the zinc sulfide (ZnS) nanoparticles have cubic phase (zinc blende). UV–Vis spectrum of the sample clearly shows that the absorption peak exhibits blue shift compared to their bulk counterpart, which confirms the quantum confinement effect of the nanostructures. Its photoluminescence (PL) spectrum shows near band gap emission at 392[Formula: see text]nm and extrinsic emission at 467[Formula: see text]nm. The particle sizes calculated from XRD and UV studies are in fair agreement with high resolution transmission electron microscopy (HRTEM) results. Starch is found to be a noble capping agent in bringing quantum confinement. The synthesis under nitrogen environment has been observed to produce quality products by reducing the oxide traces. Moreover, the I–V characteristics under dark and illumination show that ZnS can be more suitable as photodetector.
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Biresaw, Samuel Shiferaw, Samrawit Mekonnen Damte et Pankaj Taneja. « Green Synthesized Silver Nanoparticles : A Promising Anticancer Agent ». International Journal of Nanoscience 19, no 04 (14 février 2020) : 1950027. http://dx.doi.org/10.1142/s0219581x19500273.

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Silver nanoparticles (AgNPs) have attracted a great deal of attention in the recent years. It is mostly due to their availability, chemical stability, catalytic activity, conductivity, biocompatibility and anticancer activity. There are three major approaches for AgNPs synthesis; i.e., chemical, physical, and biological methods. Today, many chemical and physical methods have become less popular due to usage of hazardous chemicals or their high costs, respectively. The green method has introduced an appropriate substitute synthesis strategy for the conventional physical and chemical approaches. The utilization of the plant extracts as reducing, stabilizing and coating agent of AgNPs is an interesting eco-friendly approach leading to high efficiency. The anticancer synergistic effects among the AgNPs and phytochemicals will enhance their therapeutic potentials. Surprisingly, although many studies have demonstrated the significant enhancement in cytotoxic activities of plant-mediated AgNPs toward cancerous cells, these nanoparticles (NPs) have been found nontoxic to normal human cells in their therapeutic concentrations. This paper provides a specific insight into the mechanism of plant-mediated AgNPs synthesis, their anticancer and cytotoxic activities in vitro cancer cells, in vivo model animals and clinical trials.
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CETİNER, Suat, Şeyma KANARA, Fatih IŞIK et Neslihan OKYAY. « ELECTROCONDUCTIVE POLYAMIDE FIBERS WITH GREEN SYNTHESIZED SILVER NANOPARTICLES ». Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 25, no 4 (3 décembre 2022) : 643–54. http://dx.doi.org/10.17780/ksujes.1149666.

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The objective of this research is to study antibacterial and antistatic properties of polyamide yarn which coated silver nanoparticles and carboxymethylstarch (CMS). Silver nanoparticles were synthesized by a green synthesis method and coated onto polyamide (PA) fibers. The presence of nanosilver onto yarns was confirmed by scanning electron microscope (SEM), UV–visible spectra (UV-Vis) and X-ray diffraction (XRD) techniques. The concentration of silver deposited on the composite PA yarns was measured by ICP-OES spectroscopy. Electrical conductivity of composite yarns was measured by four point conductivity measurement technique and was changed from 1.452x10-5 to 2.853x10-3 S/cm.
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Marimuthu, Sampath, Abdul Abdul Rahuman, Govindasamy Rajakumar, Thirunavukkarasu Santhoshkumar, Arivarasan Vishnu Kirthi, Chidambaram Jayaseelan, Asokan Bagavan, Abdul Abduz Zahir, Gandhi Elango et Chinnaperumal Kamaraj. « Evaluation of green synthesized silver nanoparticles against parasites ». Parasitology Research 108, no 6 (22 décembre 2010) : 1541–49. http://dx.doi.org/10.1007/s00436-010-2212-4.

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Yan, Lei, Yan Lin Yu et Dan Xiao. « Glutathione-Directed Green Synthesis of Ag Nanoclusters with Highly Fluorescence ». Key Engineering Materials 727 (janvier 2017) : 297–302. http://dx.doi.org/10.4028/www.scientific.net/kem.727.297.

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A facile green method to synthesize fluorescent Ag nanoclusters (NCs) has been developed by employing glutathione (GSH) as capping agent as well as reducing agent. The fluorescent nanocomposites powder possesses strong emission and excellent stability. By changing the mole ratios of glutathione to silver precursor, nanoclusters with different emissions are obtained. The as-synthesized GSH-Ag nanocomposite is well characterized by fluorescence spectroscopy, HRTEM, XPS, and IR spectroscopy. The green synthesis procedure has also been used to synthesize fluorescent GSH-Au nanoclusters with good success.
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Sonitia, Isnanda, Ngurah Ayu Ketut Umiati et Agus Subagio. « Fabrication of CuONPs using Tridax Procumbens Leaf Extract as Material Antibacterial with Green Synthesis Method ». International Journal of Research and Review 10, no 5 (27 mai 2023) : 560–65. http://dx.doi.org/10.52403/ijrr.20230566.

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This experiment used the green synthesis method with Tridax procumbens as a capping and stabilizing agent to synthesize CuONPs. The application of Tridax procumbens-based on CuONPs as the antibacterial Escherichia Coli (E. Coli). The CuONPs synthesized were characterized using X-ray diffraction and scanning electron microscopy. The inhibition zones against Escherichia coli were found to be 9.10 and 10.15 mm with a concentration of 75mg/ml with extract Tridax procumbens with green synthesis method. Keywords: antibacterial, CuONPs, green synthesis, Tridax procumbens
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Lakshmi, Tulasi S., Swamy AVVS, Peddi Pavani et Rani N. Usha. « Green adeptness in the synthesis and stabilization of copper nanoparticles using aqueous root extract of Schrebera swietenioides Roxb, and its catalytic application ». Journal of medical pharmaceutical and allied sciences 11, no 1 (30 janvier 2022) : 4233–40. http://dx.doi.org/10.55522/jmpas.v11i1.2416.

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The discovery of various advanced materials that are applicable in remediation of environment pollutants was rapidly advancing because of their applications in wide range. Green synthesized Nano particles (NPs) were currently gaining attention in photodegradation of dyes and metals due to its ecofriendly, cost effective and simple production. Hence this study intended to synthesize and characterize the nano sized copper particles using aqueous root extract of Schrebera swietenioides Roxb., as green reducing agent. The synthesized NPs were characterized and proved that the NPs were aggregates with spherical shape to undefined shapes with an average particle size of 32±4 nm and contain 82.5 % of copper metal in the particles. Further, the synthesized NPs were applied for the removal of Sudan red (III) dye, Azure A dye and Lead metal. The findings proved that the NPs had potential degradation efficacy on the degradation of Sudan dye, Azure A dye and Lead metal. The NPs were durable and could be reusable with high degradation efficacy after three cycles of study for both dyes and metal in the study. Therefore, the green synthesized Cu NPs are potential candidates for photocatalytic applications. Keywords: Copper nano particles, Photo catalytic activity, Azure A dye, Lead metal degradation.
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Choi, Jeong, Hyon Jung, Yeon Baek, Bo Kim, Min Lee, Hyeong Kim et Suhng Kim. « Antibacterial Activity of Green-Synthesized Silver Nanoparticles Using Areca catechu Extract against Antibiotic-Resistant Bacteria ». Nanomaterials 11, no 1 (14 janvier 2021) : 205. http://dx.doi.org/10.3390/nano11010205.

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In this work, the antibacterial activity of silver nanoparticles (AgNPs) synthesized using Areca catechu extracts against three species of antibiotic-susceptible and three species of resistant bacteria was investigated. The effects of this plant were more promising when compared with other medicinal plants tested. The hydrothermal extract of Areca catechu was mixed with silver nitrate to synthesize AgNPs. The synthesized particle characteristics were analyzed by UV–Vis spectrophotometry, scanning electron microscopy (SEM), dynamic light scattering (DLS), and Fourier-transform infrared spectroscopy (FT-IR). Minimum inhibitory concentration and minimum bactericidal concentration tests were conducted to confirm antibacterial activity and the results showed that AgNPs synthesized using Areca catechu extracts effectively inhibited the growth of bacterial species. Moreover, the SEM images of the bacterial species treated with AgNPs synthesized with Areca catechu extracts showed that clusters of AgNPs were attached to the surface of the bacterial cell wall, which could induce destruction of the cell membranes. The results suggest that AgNPs synthesized with Areca catechu extracts have the potential to treat antibiotic-resistant bacteria known as the major cause of nosocomial infections.
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