نتایج جستجو برای: nanocrystalline composite

تعداد نتایج: 131664  

Journal: :Nanoscale 2014
Jian Zhu Fujian Lv Shengxiong Xiao Zhenfeng Bian Gerd Buntkowsky Colin Nuckolls Hexing Li

This manuscript describes a synthesis of nanocrystalline TiOF2 film. The nanocrystalline TiOF2 becomes chemically attached to the surface of the glass slide. These films are robust and can be recycled as photocatalysts for the degradation of organic dyes and solvents. These films also have significant antibacterial properties upon irradiation.

S. Rasouli S. Sadjadi,

Nanocrystalline alumina powder has been synthesized using solution combustion method. The obtained nanocrystalline alumina powder was used as an efficient catalyst for the synthesis of imidazo[1,2-a]azine derivatives from one-pot three component reaction of benzaldehyde, 2-aminoazine and trimethylsilylcyanide under ultrasonic irradiation and refluxing condition. Reusability of catalyst and shor...

2014
Dionisios Panagiotaras Elias Stathatos

Sol-gel method has been used to fabricate nanocomposite films on glass substrates composed halloysite clay mineral and nanocrystalline TiO2. The methodology for the synthesis involves a simple chemistry method utilized nonionic surfactant molecule as pore directing agent along with the acetic acid-based solgel route with the absence of water molecules. The thermal treatment of composite films a...

2014
Dionisios Panagiotaras

Microfibrous palygorskite and tubular halloysite clay mineral combined with nanocrystalline TiO2 are incorporating in the preparation of nanocomposite films on glass substrates via sol-gel route at 450C. The synthesis is employing nonionic surfactant molecule as pore directing agent along with acetic acid-based sol-gel route without addition of water molecules. Drying and thermal treatment of c...

Journal: :international journal of nano dimension 0
s. sadjadi payame nor university, lavasan branch, lavasan, iran. s. rasouli department of nanomaterials & nanocoatings, institute for color science and technology (icst), tehran,iran.

nanocrystalline alumina powder has been synthesized using solution combustion method. the obtained nanocrystalline alumina powder was used as an efficient catalyst for the synthesis of imidazo[1,2-a]azine derivatives from one-pot three component reaction of benzaldehyde, 2-aminoazine and trimethylsilylcyanide under ultrasonic irradiation and refluxing condition. reusability of catalyst and shor...

Journal: :Kovové materiály 2021

It has been demonstrated for the first time that severe plastic deformation (SPD) permits to produce metallic alloys containing two coexisting amorphous phases from crystalline multiphase alloy. The as-cast Ni60Nb18Y22 alloy was coarse-grained and contained mainly NiY phase (grain size 25 µm) also NbNi3 ,N i2Y, Ni7Y2 Ni3Y 3–5 µm). High pressure torsion (4 GPa, 10 torsions) completely changed st...

Journal: :Journal of biomedical materials research. Part A 2006
Y W Gu H Li B Y Tay C S Lim M S Yong K A Khor

Porous NiTi with an average porosity of 55 vol % and a general pore size of 100-600 microm was synthesized by self-propagating high temperature synthesis (SHS) with the addition of mechanically alloyed nanocrystalline Ni-Ti as the reaction agent. The SHS of porous NiTi using elemental powders was also performed for comparison. To enhance the bioactivity of the metal surface, porous NiTi synthes...

2018
Dmitriy I. Potemkin Dmitry K. Maslov Konstantin Loponov Pavel V. Snytnikov Yuri V. Shubin Pavel E. Plyusnin Dmitry A. Svintsitskiy Vladimir A. Sobyanin Alexei A. Lapkin

Citation: Potemkin DI, Maslov DK, Loponov K, Snytnikov PV, Shubin YV, Plyusnin PE, Svintsitskiy DA, Sobyanin VA and Lapkin AA (2018) Porous Nanocrystalline Silicon Supported Bimetallic Pd-Au Catalysts: Preparation, Characterization, and Direct Hydrogen Peroxide Synthesis. Front. Chem. 6:85. doi: 10.3389/fchem.2018.00085 Porous Nanocrystalline Silicon Supported Bimetallic Pd-Au Catalysts: Prepar...

2011
Mary W. Louie Sossina M. Haile

Hydrogen electro-oxidation kinetics at the Pt | CsH2PO4 interface have been evaluated. Thin films of nanocrystalline platinum 7.5–375 nm thick and 1–19 mm in diameter were sputtered atop polycrystalline discs of the proton-conducting electrolyte, CsH2PO4, by shadow-masking. The resulting Pt | CsH2PO4 | Pt symmetric cells were studied under uniform H2-H2O-Ar atmospheres at temperatures of 225–25...

2008
G Katumba BW Mwakikunga TR Mothibinyane

Coatings of carbon nanoparticles dispersed in SiO2, ZnO and NiO matrices on aluminium substrates have been fabricated by a sol–gel technique. Spectrophotometry was used to determine the solar absorptance and the thermal emittance of the composite coatings with a view to apply these as selective solar absorber surfaces in solar thermal collectors. Cross-sectional high resolution transmission ele...

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