نتایج جستجو برای: zinc nanoparticles

تعداد نتایج: 176865  

Ali Morad Rashidi, Hamid Reza Ghaffarian, Mahboobeh Saiedi Mohammad Ali Sayyadnejad,

Zinc oxide (ZnO) nanoparticles were synthesized by spray pyrolysis method using an aqueous solution of zinc acetate at various concentrations from 5 to 25 wt%. The decomposition of precursor solutions was carried out at 800, 1000 and 1200ºC under different atomizing pressures. The crystal structure and morphology of synthesized nanoparticles were characterized by X-Ray Diffraction ...

2015
V. An Y. Irtegov E. Anisimov V. Druzyanova N. Burtsev M. Khaskelberg

Tribological properties of nanolamellar tungsten disulfide doped with zinc oxide nanoparticles were studied. Nanolamellar tungsten disulfide and ZnO nanoparticles produced by electrospark erosion of metal granules in an H2O2 solution were analyzed using the XRD, SEM and TEM techniques. According to the tribological measurements, ZnO nanoparticles did not significantly change the friction coeffi...

2014
Barbora JANÍKOVÁ Vlastimil MATĚJKA Kateřina DĚDKOVÁ

The composites graphite/ZnO were prepared using calcination method. Zinc chloride (ZnCl2) and sodium carbonate (Na2CO3) were used for synthesis of zinc oxide (ZnO), whereas micromilled and natural graphite were used as the matrix for ZnO nanoparticles growing. During the reaction of ZnCl2 with saturated aqueous solution of Na2CO3 new compound Na2Zn3(CO3)4•(H2O)3 originates. During the calcinati...

Journal: :Oriental journal of chemistry 2021

The Zinc oxide nanoparticles were successfully synthesized using nitrate as the precursor and extract of Illicium verum was used reducing stabilizing agent. Synthesized particles in nano size characterizedby FT-IR, Ultraviolet-visible SEM & XRD techniques. formed confirmed zinc by UV- Visible, FT-IR spectroscopic data gave results regarding structure prepared nano-sized particles. According...

2014
L. Sujata Devi Nomita Devi Indrajit Sharma H. Nandakumar Sarma

Zinc Sulphide (ZnS) nanoparticles doped with different concentrations of Mn (0%, 2%, 4%, 6%, 8%, 10%) have been synthesized by chemical co-precipitation method using polyvinyl alcohol (PVA) as a capping agent to control the particle growth. The structural characterizations of as synthesized nanoparticles are determined by X-ray diffraction (XRD) which showed cubic zinc blende structures with av...

ژورنال: یافته 2015
سید علیپور, باقر, عشریه, معصومه , خان بابایی, رمضان ,

Background :Nowadays, nanotechnology has been developing rapidly and may have considerable effects on industry, society and the environment. In this research the toxicity properties of zinc oxide nanoparticles with a size of 20 nm on enzyme and liver tissue of NMRI mice were studied. Materials and Methods: This experimental study was performed in standard conditions on 25 NMRI mice with an aver...

Journal: :Nanoscale 2013
Xin Liu Mark T Swihart

Here we demonstrate a single-pot heating approach for controllable synthesis of colloidal zinc oxide nanocrystals from zinc acetylacetonate. Such single-pot heating approaches are inherently amenable to large scale production. We have systematically studied the crystallization process, investigating the growth of nanocrystals and the influence of ligands on the morphology and luminescence of Zn...

2013
R. P. PAWAR

Different samples of ZnS nanoparticals were synthesized by chemical co-precipitation method at room temperature using zincsulphate as zinc source and sodium sulphide as sulphur source. Structural properties of synthesized ZnS nanoparticles were studied by X-ray diffraction pattern (XRD) while optical properties were examined by UV-Visible absorption spectroscopy. XRD pattern showed the as synth...

Journal: :Journal of the American Chemical Society 2009
Benjamin D Yuhas Peidong Yang

We present an all-oxide solar cell fabricated from vertically oriented zinc oxide nanowires and cuprous oxide nanoparticles. Our solar cell consists of vertically oriented n-type zinc oxide nanowires, surrounded by a film constructed from p-type cuprous oxide nanoparticles. Our solution-based synthesis of inexpensive and environmentally benign oxide materials in a solar cell would allow for the...

حسین زاده, ادریس, سمرقندی, محمد رضا, علیخانی, محمد یوسف,

Background and Objective: This study aimed to determine the antibacterial activity of either zinc oxide or copper oxide nanoparticles alone or combined against Gram-positive and Gram-negative bacteria. Materials and Methods: In this experimental study Escherichia coli (E. coli ATCC 25922), Staphylococcus aureus (S.aureus ATCC 25923), Pesudomonas aueroginosa (P. aueroginosa ATCC 27853) and Staph...

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