نتایج جستجو برای: nano metal oxides

تعداد نتایج: 259901  

2010
Jinbo Cao Junqiao Wu

Transition metal oxides offer a wide spectrum of properties which provide the foundation for a broad range of potential applications. Many of these properties originate from intrinsic coupling between lattice deformation and nanoscale electronic and magnetic ordering. Lattice strain thus has a profound influence on the electrical, optical, and magnetic properties of these materials. Recent adva...

2016
Guoqiang Tan Feng Wu Yifei Yuan Renjie Chen Teng Zhao Ying Yao Ji Qian Jianrui Liu Yusheng Ye Reza Shahbazian-Yassar Jun Lu Khalil Amine

Structural degradation and low conductivity of transition-metal oxides lead to severe capacity fading in lithium-ion batteries. Recent efforts to solve this issue have mainly focused on using nanocomposites or hybrids by integrating nanosized metal oxides with conducting additives. Here we design specific hierarchical structures and demonstrate their use in flexible, large-area anode assemblies...

2017
Guofeng Zhao Fan Yang Zongjia Chen Qingfei Liu Yongjun Ji Yi Zhang Zhiqiang Niu Junjie Mao Xinhe Bao Peijun Hu Yadong Li

A main obstacle in the rational development of heterogeneous catalysts is the difficulty in identifying active sites. Here we show metal/oxide interfacial sites are highly active for the oxidation of benzyl alcohol and other industrially important primary alcohols on a range of metals and oxides combinations. Scanning tunnelling microscopy together with density functional theory calculations on...

Journal: :Nanotechnology 2015
Agnieszka Gajewicz Mark T D Cronin Bakhtiyor Rasulev Jerzy Leszczynski Tomasz Puzyn

Creating suitable chemical categories and developing read-across methods, supported by quantum mechanical calculations, can be an effective solution to solving key problems related to current scarcity of data on the toxicity of various nanoparticles. This study has demonstrated that by applying a nano-read-across, the cytotoxicity of nano-sized metal oxides could be estimated with a similar lev...

Journal: :international journal of nano dimension 0
m. ghane department of microbiology, islamic azad university tonekabon branch ,tonekabon, iran. b. sadeghi department of chemistry, islamic azad university tonekabon branch, tonekabon, iran. a.r. jafari department of microbiology, islamic azad university tonekabon branch, tonekabon, iran. a.r. paknejhad department of physics, islamic azad university shabestar branch, iran.

in the present work, we report the synthesis of binary nano metal oxides such as zinc /copper oxide via novel dry synthetic methods such as thermal decomposition of oxalate precursor. the synthesis route involves facile solid-phase mechanochemical activation of a physical mixture of simple copper/zinc salts and oxalic acid, followed by calcination of the as-ground oxalate precursors at 450◦c. x...

2017
Laura Clarizia Danilo Russo Ilaria Di Somma Roberto Andreozzi Raffaele Marotta

Photocatalytic water splitting and organic reforming based on nano-sized composites are gaining increasing interest due to the possibility of generating hydrogen by employing solar energy with low environmental impact. Although great efforts in developing materials ensuring high specific photoactivity have been recently recorded in the literature survey, the solar-to-hydrogen energy conversion ...

Journal: :iranian chemical communication 2014
mahdieh ghobadifard mostafa khelghati ehsan zamani qasem maleki saeid farhadi

zno nanostructures of different methods and sizes were grown in a controlled manner using a simple hydrothermal and sonochemical technique. controlling the content of concentration and temperature of the reaction mixture, spherical nanoparticles zno structures could be synthesized at temperatures 100-150 °c with excellent reproducibility in solvothermal and at different power and time in sonoch...

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