نتایج جستجو برای: au catalyst

تعداد نتایج: 121787  

2016
Xu Yu Gong Cheng Si-Yang Zheng

In this paper, a multifunctional Fe3O4@SiO2@PEI-Au/Ag@PDA nanocomposite catalyst with highly stabilized reactivity and magnetic recyclability was synthesized by a self-assembled method. The magnetic Fe3O4 nanoparticles were coated with a thin layer of the SiO2 to obtain a negatively charged surface. Then positively charged poly(ethyleneimine) polymer (PEI) was self-assembled onto the Fe3O4@SiO2...

Journal: :Chemical communications 2012
Scott A Trammell Rafaela Nita Martin Moore Dan Zabetakis Eddie Chang D Andrew Knight

Using a low power green laser, we have demonstrated a rate acceleration of ~2-fold for the hydrolysis of methyl parathion by irradiating the plasmon absorption band of Au nanoparticles capped with a Cu(bpy) catalyst.

Journal: :Chemical communications 2008
Jingpeng Wang Dan F Thomas Aicheng Chen

A novel nanostructure of a PtAu catalyst, alloyed PtAu nanodendrites, has been synthesized via a reproducible single-step hydrothermal co-reduction of Pt and Au inorganic precursors and shows exceptionally high catalytic activity towards the electrooxidation of formic acid.

Journal: :Chemical communications 2011
Stéphanie Dupuy Faïma Lazreg Alexandra M Z Slawin Catherine S J Cazin Steven P Nolan

A recently isolated gold(I) complex, [Au(IPr)(OH)], permits the transformation of carboxylic acids to the corresponding decarboxylated gold(I)-aryl complex without the use of silver co-catalyst under mild reaction conditions.

Journal: :Chemical communications 2012
Fuping Dong Wanping Guo Shin-Kyu Park Chang-Sik Ha

The design and synthesis of novel cyanopropyl polysilsesquioxane hollow spheres lead to production of a highly active and stable catalyst in the reduction of 4-nitrophenol catalyzed by Au nanoparticles.

Journal: :Chemical communications 2012
Babak Karimi Mohammad Gholinejad Mojtaba Khorasani

A novel gold nanoparticle supported periodic mesoporous organosilica with alkylimidazolium framework, Au@PMO-IL, was shown to be a highly active and recyclable catalyst for three-component coupling reaction of aldehyde, alkyne and amine to give the corresponding propargylamine.

Journal: :Chemical communications 2014
Renxi Jin Yang Yang Yunfeng Li Lin Fang Yan Xing Shuyan Song

Highly dispersive and ultrafine Au nanoparticles were effectively immobilized on the surface of hierarchical double-walled nickel silicate hollow nanofibers assembled by ultrathin nanosheets, which showed remarkable catalytic performances as an efficient and reusable hydrogenation catalyst.

2016
Ryo Shirai Masanori Hayase

A novel catalyst layer structure is proposed for our miniature fuel cells. In our fuel cells, conventionally porous Pt was used as a catalyst layer. In order to reduce the Pt amount, instead of porous Pt, porous Pd was formed on a Si chip and Pt was deposited atomically on the Pd by UPD-SLRR(Under Potential Deposition – Surface Limited Redox Replacement). The PdPt catalyst showed satisfying per...

Journal: :Chemical communications 2013
Atsuhiro Tanaka Yuri Nishino Satoshi Sakaguchi Takayuki Yoshikawa Kazuya Imamura Keiji Hashimoto Hiroshi Kominami

A functionalized plasmonic Au/TiO2 photocatalyst with an Ag co-catalyst was successfully prepared by the combination of two types of photodeposition methods, and it quantitatively converted nitrobenzene and 2-propanol to aniline and acetone under irradiation of visible light.

Journal: :Chemical communications 2003
Botao Qiao Youquan Deng

Ferric hydroxide supported Au prepared with co-precipitation without heat treatment could be a very effective catalyst for selective CO oxidation in the presence of H2 at lower temperatures.

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