Academic literature on the topic 'Zinc sulfide nanoparticles'
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Journal articles on the topic "Zinc sulfide nanoparticles"
Han, Bo, William H. Fang, Shuqing Zhao, Zhi Yang, and Ba X. Hoang. "Zinc sulfide nanoparticles improve skin regeneration." Nanomedicine: Nanotechnology, Biology and Medicine 29 (October 2020): 102263. http://dx.doi.org/10.1016/j.nano.2020.102263.
Full textAstuti, L., R. P. Dewi, A. Nurdiana, R. Ragadhita, and A. B D Nandiyanto. "Techno-economic Analysis on the Production of Zinc Sulfide Nanoparticles by Precipitation Assisted Ultrasonic Radiation Method." International Journal of Research and Applied Technology 1, no. 1 (June 25, 2021): 173–86. http://dx.doi.org/10.34010/injuratech.v1i1.5666.
Full textVázquez, Alejandro, Israel López, and Idalia Gómez. "Cadmium Sulfide and Zinc Sulfide Nanostructures Formed by Electrophoretic Deposition." Key Engineering Materials 507 (March 2012): 101–5. http://dx.doi.org/10.4028/www.scientific.net/kem.507.101.
Full textOthman, Razhan S., Rebaz A. Omar, Karzan A. Omar, Aqeel I. Gheni, Rekar Q. Ahmad, Sheyma M. Salih, and Avan N. Hassan. "Synthesis of Zinc Sulfide Nanoparticles by Chemical Coprecipitation Method and its Bactericidal Activity Application." Polytechnic Journal 9, no. 2 (December 1, 2019): 156–60. http://dx.doi.org/10.25156/ptj.v9n2y2019.pp156-160.
Full textRani, Geeta, and P. D. Sahare. "Spectroscopy of Nickel-Doped Zinc Sulfide Nanoparticles." Spectroscopy Letters 46, no. 6 (August 18, 2013): 391–96. http://dx.doi.org/10.1080/00387010.2012.744318.
Full textNurdiana, Azizah, Lydzikri Astuti, Rismaya Pramesti Dewi, Risti Ragadhita, Asep Bayu Dani Nandiyanto, and Tedi Kurniawan. "Techno-economic Analysis on the Production of Zinc Sulfide Nanoparticles by Microwave Irradiation Method." ASEAN Journal of Science and Engineering 2, no. 2 (August 19, 2021): 143–56. http://dx.doi.org/10.17509/ajse.v2i2.37791.
Full textGayou, V. L., B. Salazar-Hernández, M. Rojas-López, C. Zúñiga Islas, and Jorge Antonio Ascencio. "Study of Fluorescence of Yttrium Doped Zinc Sulfide Nanoparticles." Journal of Nano Research 9 (February 2010): 139–43. http://dx.doi.org/10.4028/www.scientific.net/jnanor.9.139.
Full textNair, Sutheertha S., and M. Abdul Khadar. "Dc conductivity of consolidated nanoparticles of zinc sulfide." Science and Technology of Advanced Materials 9, no. 3 (July 2008): 035010. http://dx.doi.org/10.1088/1468-6996/9/3/035010.
Full textZhang, Hongwang, Ken-Tye Yong, and M. T. Swihart. "Synthesis of Zinc Sulfide Nanoparticles by Spray Pyrolysis." ECS Transactions 2, no. 7 (December 21, 2019): 249–54. http://dx.doi.org/10.1149/1.2408919.
Full textShahi, Ashutosh K., B. K. Pandey, R. K. Swarnkar, and R. Gopal. "Surfactant assisted surface studies of zinc sulfide nanoparticles." Applied Surface Science 257, no. 23 (September 2011): 9846–51. http://dx.doi.org/10.1016/j.apsusc.2011.06.046.
Full textDissertations / Theses on the topic "Zinc sulfide nanoparticles"
Perera, Jayalath Pathirannehelage Dimuthu Nuwan. "Photocatalytic Properties of Zinc Selenide/Cadmium Sulfide Core-shell Nanoparticles." Bowling Green State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1370994697.
Full textMonahan, Bradley Michael. "Synthesis and Characterization of Phase-pure Copper Zinc Tin Sulfide (Cu2ZnSnS4) Nanoparticles." University of Toledo / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1404732007.
Full textAllehyani, S. H. A., R. Seoudi, D. A. Said, A. R. Lashin, and A. Abouelsayed. "Synthesis, Characterization, and Size Control of Zinc Sulfide Nanoparticles Capped by Polyethylene Glycol." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42490.
Full textLe, Bars Maureen. "Devenir du zinc des produits résiduaires organiques après méthanisation et recyclage agricole : rôle des nanoparticules de sulfure de zinc." Electronic Thesis or Diss., Aix-Marseille, 2019. http://www.theses.fr/2019AIXM0034.
Full textAgricultural recycling of organic waste (OW), raw or after a treatment like anaerobic digestion (AD) and/or composting is common. It is necessary to assess the environmental impact of OW agricultural recycling after anaerobic digestion since this technology is gaining interest, particularly regarding zinc, an abundant element in OW. In order to properly evaluate the risk, zinc speciation must be known. First, we have shown that AD promote the formation of nano-ZnS that is therefore the main species of Zn (> 70%) in AD digestates. This unstable species is transformed during composting of 1 to 3 months. Size and strain are parameters that can explain nanocrystals reactivity. We showed that the more nano-ZnS are small and the higher the strain is. Interaction with thiol containing organic molecules, potentially present in anaerobic digesters, release nano-ZnS structural strain and control its growth. Finally, amended soil characteristics have a key role for nano-ZnS fate: the components of clayey and iron-oxide-rich soils are able to immobilize Zn released by nano-ZnS dissolution, unlike sandy soils components. This work gives a better understanding of zinc dynamics in cultivated ecosystems subject to spreading of organic waste
Moussaoui, Myriam. "Elaboration et caractérisations de nouveaux matériaux diélectriques structurés par des nanoparticules de sulfure de zinc : applications prospectives." Thesis, Saint-Etienne, 2011. http://www.theses.fr/2011STET4001.
Full textOur efforts have been devoted to the development of simple approach to synthesize ZnS nanoparticules (NPs) by melting process in a glassy matrix with the aim to create a controlled optical index variation. In this thesis, we present the formation of ZnS NPs in the glassy matrix and study of their optical properties. The nanocomposite incorporating ZnS in the host medium was prepared using the melting process from a mixture of the raw materials. We have prepared various glass samples with ZnS NPs size ranging from 1.8 à 7 nm. These samples were treated (heat treatment ± UV insulation with 244 nm laser) and characterized by UV-Vis absorption, FTIR, photoluminescence spectroscopy, Raman measurements and XPS. The refractive index measurements of these nanostructured composite glasses have been carried out and show an important increase with ZnS concentrations and treatments. We also present the elaboration of small and monodisperse ZnS nanopowder with size ranging from 3 to 100 nm by a simple, low-cost and mass production chemical method. The NPs were characterised by X-ray powder diffraction (XRD), UV-vis absorption and photoluminescence spectroscopy. The photocatalytic activity of ZnS nanopowders was investigated by using different colorant water dispersed. ZnS NPs appear to be a good candidate for potential environmental applications such as water purification. We also present application of fluorescent ZnS nanoparticles as cellular biomarkers. Fluorescent microscopy images of osteoblastic MC3T3-E1 cells revealed that the ZnS nanoparticles were biocompatible and were penetrated cells and nucleus regardless of their size. Hence, the ZnS NPs can be good candidates for drug delivery and bio-imaging applications
El, Zein Basma. "Growth and characterization of zinc oxide (ZnO) nanostructures for photovotaic applications." Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10141/document.
Full textTo date, the development of nanotechnology has launched new ways to design efficient solar cells. Strategies have been employed to develop nanostructure architectures of semiconductors, metals, and polymers for solar cells. In this research we have considered the Lead sulfide (PbS) nanoparticles with their tunable band gap and optical properties to harvest the entire solar spectrum which can improve the optical absorption, and charge generation. On the other hand, Zinc oxide (ZnO) nanowires will provide the charge separation and transportation. The ZnO Nanowires sensitized with PbS nanoparticles might significantly impact power conversion efficiency of the solar cells Driven by these unique properties, we demonstrate the successful growth of self catalyzed ZnO nanowires on silicon and glass substrates, by pulsed laser deposition (PLD) using ZnO nanowall network with honeycomb structure as seed layer. We identified that the growth parameters are vital to control the crystallinity, morphology and the defect levels in the synthesized ZnO nanowires. SEM, XRD, TEM, HRTEM analysis show that the nanostructures are highly crystalline and are vertically oriented. We also report the in-situ growth of PbS nanoparticles without linker on the surface of well –oriented ZnO NWs by (SILAR) technique. The PbS Nanoparticles are packed tightly on the surface of the ZnO Nanowires with different sizes and densities, without insulating nature organic ligands, which might affect both the electronic structure at the interface and the electron - transfer rate. The SEM, TEM, HRTEM, PL and XRD analysis, confirm the attachment of the spherical shape polycrystalline PbS nanoparticles. We propose at the end of the thesis the p-PbS /n-ZnO hetero-junction with its future applications in solar cells
Chiang, Chia-Wei, and 江家緯. "Zinc Sulfide Nanoparticles Precipitated from Reverse-Micelle Microemulsions." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/87050419542312879449.
Full text逢甲大學
化學工程學所
100
The application of nanometer technology is attracted a lot of attention. Nanometer scale hollow spheres can be used in the hydrogen materials and drug delivery, etc. Therefore, nanometer scale hollow sphere prepared by reverse micelle method is going to research in this work (experiment). We divided the water phase into two groups including pure water and ammonia solution. Then we are trying to find the optimal condition to make the reproduction of nanometer scale hollow spheres based on the five factors （the quantity of TEOS, ammonia solution concentration, the shake/agitation time, the shake amplitude and the sampling time）. Reverse micelle method goes through with mixing TEOS, hexane and water/ammonia solutions together in various vol % by ultrasonic processor for 2 min. The mixture solution will separate into oil phase and water phase, then we took out the oil phase of mixture solution which is a reverse micells system of water in oil （W/O）. The droplets （namely reverse micelles） will undergo the sol-gel reaction while precipitating after lefting for 1h. The ammonia in the droplets catalyzed the TEOS in the oil phase from solid, i.e. the silica hollow spheres, at the oil-water interface. Took the upper layer of the oil phase and analyzed the particle size distribution and the surface morphology of nanometer scale hollow spheres which examined by DLS, AFM, TEM and FM, respectively.
Chen, Chuh-Rou, and 陳智柔. "Synthesis and characterization of zinc sulfide nanoparticles on a polymer film." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/90279471034794371759.
Full text南台科技大學
化學工程與材枓工程系
95
Poly(BA-co-AMA) latex was formed by soap-free emulsion copoly- merization of n-Butyl acrylate with 2-Acrylamidoglycolic acid. The latex was added into a Petri disk and dried at 60℃ to obtain a thin copolymer film. The compositions of the copolymer film were analyzed by attenuated total reflection–Fourier transform infrared spectroscopy (ATR-FTIR) and elemental analysis (EA) of C, H and N. When the film was used to adsorb Zn(II), the surface of the film could adsorb Zn(II) to reach equilibrium at 5 min. In the period of 5-20 min, Zn(II) diffused into the inner of film to be adsorbed. Furthermore, the films that had adsorbed Zn(II) were immersed in 0.3 M Na2S for 15 sec. ZnS nanoparticles on the film were observed by Scanning electron microscopy and confirmed by energy-dispersive X-ray spectrometer. Controlling the adsorption time in the period of 0-5 min, we could obtain various sizes of ZnS nanoparticles on the copolymer films. The optical properties of the ZnS/polymer composites were also analyzed by UV/Visible spectrometer and photoluminescence spectrometer.
Gondikas, Andreas Panagiotis. "The Role of Sulfhydryl-Containing Low Molecular Weight Ligands for the Environmental Fate of Zinc Sulfide and Metallic Silver Nanoparticles." Diss., 2012. http://hdl.handle.net/10161/5408.
Full textNanomaterials often exhibit enhanced reactivity relative to their larger colloidal counterparts because of the high specific surface area and number of imperfections on the crystal lattice at the nanoscale. Management of ecosystems, remediation of contaminated waters, and assessment of the potential risks from the industrial use on nanomaterials requires an understanding of the environmental factors that control the reactivity and bioavailability of natural and manufactured nanomaterials. Dissolved organic matter (DOM) acts as a moderator of reactivity and bioavailability for dissolved and particulate moieties in natural waters. DOM consists of a range of low and high molecular weight species that are complex and heterogeneous. It has been historically categorized based on operational definitions, rather than physical properties. In order to understand the effect of DOM on nanomaterials, there is an urgent need for information regarding specific properties of DOM, such as ligand groups.
The goal of this research was to study how cysteine, a low molecular weight metal-binding ligand, affects the composition and reactivity of nanoparticulate zinc sulfide and metallic silver. Zinc sulfide was used as a representative of nanoparticulate metal sulfide which occurs naturally in sulfidic environments. Metallic silver nanoparticles were also studied because of its wide use in consumer products. Both types of nanomaterials contain metal constituents (zinc and silver) that are expected to strongly bind to sulfhydryl-containing ligands (such as cysteine) in the environment. Serine is structurally similar to cysteine, with the only difference of a hydroxyl group in the place of the sulfhydryl group of cysteine. Therefore, serine was used for comparison as a hydroxyl-containing analogue to cysteine.
The aggregation kinetics of zinc and other metal sulfide nanoparticles in the presence of cysteine and serine were investigated using dynamic light scattering. Cysteine decreased aggregation rates of the particles, while serine had no effect on their aggregation behavior. Further experiments revealed that the mechanism of stabilization occurred through the adsorption of cysteine on zinc sulfide, which induced electrostatic charge on the particles surface. A direct link was established between the amount of cysteine sorbed and attachment efficiency, an indicator of the tendency of particles to aggregate. These results shed light on discrepancies in the literature between metal sulfide precipitation experiments conducted in our lab and work on the formation and aggregation of zinc sulfide nanoparticles on biofilms of sulfate reducing bacteria.
The early-stage growth and aggregation kinetics of zinc sulfide nanoclusters in the presence of cysteine was studied in detail using a suite of complementary techniques. Growth and aggregation experiments have been traditionally difficult to conduct due to instrumental precision issues, but newly developed analytical tools and software products have made it possible to study the early-stage formation of nanoclusters. Experiments with small angle X-ray scattering, X-ray diffraction, dynamic light scattering, and X-ray absorption spectroscopy at the extended fine structure range showed that cysteine controlled the growth and aggregation of zinc sulfide nanoclusters. The molar ratio between zinc, sulfide, and cysteine was a determining factor in the precipitation process. When zinc and sulfide were in equimolar concentrations with cysteine, very small nanoclusters of about 2.5 nm formed within 12 hours and aggregated to structures with hydrodynamic diameter larger than 100 nm. When cysteine was in excess of zinc and sulfide, aggregation was held to a minimum, but monomer nanoclusters were able to grow to about 5 nm in 12 hours. Overall, these results indicate the importance of thiol ligands on the monomer size, extent of aggregation, and aggregate structure of zinc sulfides.
The effect of metal ligands on metal bearing particle surfaces is of particular interest for manufactured nanoparticles, because they are typically coated with an organic coating during the production process. These coatings are sorbed on the particles surface and are likely to interfere between the metallic surface and the ligand. Dissolution experiments using citrate and polyvinylpyrrolidone (PVP) coated zero valent silver nanoparticles in the presence of cysteine and serine showed that cysteine dissolved both types of particles, while serine did not. Dissolution rates depended on the aggregation state of the particles exposed to cysteine. As indicated by zeta potential and adsorption measurements, cysteine replaced the coating on the particles surface and altered their aggregation pattern. X-ray absorption spectroscopy near the absorption edge showed partial oxidation of silver and formation of Ag(+I)-sulfur bonds, indicating that the thiol group in cysteine formed chemical bonds with oxidized surface silver atoms. A comparison between the two coatings showed that citrate coated particles dissolved approximately three times faster than PVP coated particles. Overall, these results show that metal binding ligands can drastically change the fate of manufactured silver nanoparticles in the environment and that this effect is moderated by surface coatings.
The results of this study suggest that cysteine, a metal binding ligand was able to induce and control transformations, such as growth, aggregation, dissolution, and surface reactivity of zinc sulfide and metallic silver nanoparticles. Cysteine adsorbed on metal sites on both ZnS and Ag particles, inducing changes on their surface charge. Aggregation of ZnS particles was slowed because of a net decrease in zeta potential compared to the bare particles. On the contrary, cysteine enhanced the aggregation of Ag particles, by replacing the citrate and PVP coatings on the particles surface. Finally, the cysteine-Ag(+I) bonds caused strong polarization on the particles surface and lead to the oxidative dissolution of the particles.
Overall, this research provides a better understanding of the fate of natural and manufactured nanoparticles in anaerobic waters, where thiols are present in significant amounts. It may also be used for risk assessment of manufactured nanomaterials and the production of safer and environmentally responsible materials.
Dissertation
Huang, Ling-huei, and 黃令慧. "Antioxidative properties of zinc sulfate and superoxide dismutase immobilized on nanoparticles." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/76728620613843218972.
Full text國立臺灣海洋大學
食品科學系
95
Abstract This research explores the method of using chitosan and silica to immobilize superoxide dismutase and zinc sulphate on nanoparticles by emulsion-droplet coalescence. The optimal combination of particle size and entrapment efficiency of superoxide dismutase (SOD) was obtained by using 0.55% chitosan and 0.55% silicate . The average particle diameter was 36 nm and the entrapment efficiency of SOD was 89%. The superoxide anion radical scavenging effect reached 70% after heating for 2 hrs at 90℃. After stored for 340 hrs in citric acid buffer (pH=3), the superoxide anion radical scavenging effect was 50%. The optimal combination of particle size and entrapment efficiency of both SOD and zinc sulphate was obtained by using 0.87% chitosan and 0.87% silicate. The average particle diameter was 27 nm and the entrapment efficiency of SOD was 94%. The superoxide anion radical scavenging effect was maintained at 90% after heating for 2 hrs at 90℃. After stored for 340 hrs in citric acid buffer (pH=3), the superoxide anion radical scavenging effect was 60%. The optimal combination of particle size and entrapment efficiency of zinc sulphate was obtained by using 0.87% chitosan and 0.87% silicate. The average particle diameter was 28 nm and the entrapment efficiency of Zn was 93%. The hydroden peroxide scavenging effect was maintained at 48% after stored for 340 hrs in citric acid buffer (pH=3). All three nanoparticles could inhibit the growth of both A549 and SK-HEP-1 cancer cell lines. The cell proliferation decreased to 38% and 50% at the concentration of 167 μg/ml of chitosan-silica–SOD nanoparticles. Apparently chitosan-silica containing SOD, zinc, or both SOD and zinc can inhibit the growth of several tumor cells in vitro. The antioxidant effect of nanoparticles decreased with inereasing storage time. However, the encapusation/immobilization of SOD by chitosan-silica nanoparticles help retain the antioxidative ability and increase its thermal stability.
Book chapters on the topic "Zinc sulfide nanoparticles"
Mieshkov, A. M., L. I. Grebenik, T. V. Ivahnuk, and L. F. Sukhodub. "Antibacterial Properties of the Nanoparticles with the Zinc Sulfide Quantum Dots." In 3rd International Conference on Nanotechnologies and Biomedical Engineering, 267–70. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-287-736-9_65.
Full textNikolopoulos, D., I. Valais, Panayotis H. Yannakopoulos, C. Michail, C. Fountzoula, A. Bakas, I. Kandarakis, and G. Panayiotakis. "Luminescence Efficiency of Cadmium Selenide/Zinc Sulfide (CdSe/ZnS) Quantum Dot Nanoparticle Sensors Under X-Ray Excitation." In NATO Science for Peace and Security Series B: Physics and Biophysics, 53–59. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7468-0_5.
Full textJi, Hongmei, Jieming Cao, Jinsong Liu, Mingbo Zheng, Yongping Chen, Yulin Cao, and Nongyue He. "Synthesis of mesoporous structures zinc sulfide by assembly of nanoparticles with block-copolymer as template." In Recent Progress in Mesostructured Materials - Proceedings of the 5th International Mesostructured Materials Symposium (IMMS2006), Shanghai, P.R. China, August 5-7, 2006, 327–30. Elsevier, 2007. http://dx.doi.org/10.1016/s0167-2991(07)80327-2.
Full textConference papers on the topic "Zinc sulfide nanoparticles"
Regmi, Amrit, Bibek Raj Bhattarai, and Surendra K. Gautam. "Synthesis and Microscopic Study of Zinc Sulfide Nanoparticles." In 2019 International Conference on Computer, Communication, Chemical, Materials and Electronic Engineering (IC4ME2). IEEE, 2019. http://dx.doi.org/10.1109/ic4me247184.2019.9036683.
Full textAhmad, Mushtaq, Kamran Rasool, Zahid Imran, M. A. Rafiq, and M. M. Hasan. "Structural and electrical properties of Zinc sulfide nanoparticles." In 2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC). IEEE, 2011. http://dx.doi.org/10.1109/siecpc.2011.5876907.
Full textAhmadi, M., S. Javadpour, A. A. Khosravi, and A. R. Gharavi. "An Investigation of Optical Properties of Erbium Doped Zinc Sulfide Nanoparticles." In 2007 Digest of papers Microprocesses and Nanotechnology. IEEE, 2007. http://dx.doi.org/10.1109/imnc.2007.4456190.
Full textJinjun, Sun, Motlan, K. Drozdowicz-Tomsia, Guanghua Zhu, and Ewa Goldys. "Cadmium selenide and zinc sulfide nanoparticles - challenges in synthesis revealed through optical properties." In 2006 International Conference on Nanoscience and Nanotechnology. IEEE, 2006. http://dx.doi.org/10.1109/iconn.2006.340582.
Full textKaurav, N., S. Verma, Upendra N. Tripathi, and K. K. Choudary. "Size effect on the pressure induced structural phase transition of the zinc sulfide nanoparticles." In SOLID STATE PHYSICS: Proceedings of the 56th DAE Solid State Physics Symposium 2011. AIP, 2012. http://dx.doi.org/10.1063/1.4709905.
Full textVittoe, Robert L., Tung Ho, Sudhir Shrestha, Mangilal Agarwal, and Kody Varahramyan. "All Solution-Based Fabrication of CIGS Solar Cell." In ASME 2013 International Manufacturing Science and Engineering Conference collocated with the 41st North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/msec2013-1239.
Full textIslam, Md Didarul, Sipan Liu, John Derov, Augustine M. Urbas, Zahyun Ku, Amy Sihn, Evan M. Smith, et al. "Highly Efficient Mid-Wavelength Infrared (MWIR) Polarizer by ORMOCHALC Composite With Improved Thermomechanical Stability and Spectral Selectivity." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-70843.
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