نتایج جستجو برای: electrocatalytic degradation

تعداد نتایج: 155940  

Journal: :Chemical communications 2011
Young-Woo Lee Sang-Beom Han Do-Young Kim Kyung-Won Park

We report Pt nanocubes of ∼4.5 nm in size synthesized by thermal decomposition in the presence of PVP. The Pt cubic electrocatalysts with dominantly exposed {100} facets show much improved electrocatalytic activities in methanol, ethanol and formic acid electrooxidation.

Journal: :Chemical communications 2009
Hang Wei Jian-Jun Sun Liang Guo Xiao Li Guo-Nan Chen

A heated oxide covered copper electrode (HOCE) was facilely fabricated for the first time, providing a highly enhanced electrocatalytic oxidation, and cost effective and sensitive determination for polyhydroxy compounds such as glucose and shikimic acid.

Journal: :Chemical communications 2010
Jing Li Lihua Wang Li Liu Lin Guo Xiaodong Han Ze Zhang

Tetrahexahedral Au nanocrystals with exposed {520} facets have been prepared in high yield by facile seed-mediated growth and the as-synthesized tetrahexahedral Au nanocrystals possess enhanced electrocatalytic activity toward the oxidation of formic acid.

Journal: :Physical chemistry chemical physics : PCCP 2014
Carlos Busó-Rogero Juan V Perales-Rondón Manuel J S Farias Francisco J Vidal-Iglesias Jose Solla-Gullon Enrique Herrero Juan M Feliu

Thallium modified shape-controlled Pt nanoparticles were prepared and their electrocatalytic activity towards formic acid electrooxidation was evaluated in 0.5 M sulfuric acid. The electrochemical and in situ FTIR spectroscopic results show a remarkable improvement in the electrocatalytic activity, especially in the low potential region (around 0.1-0.2 V vs. RHE). Cubic Pt nanoparticles modifie...

Journal: :ACS nano 2011
Björn Wickman Yvonne E Seidel Zenonas Jusys Bengt Kasemo R Jürgen Behm

Aiming at the investigation of spillover and transport effects in electrocatalytic reactions on bimetallic catalyst electrodes, we have prepared novel, nanostructured electrodes consisting of arrays of homogeneously distributed pairs of Pt and Ru nanodisks of uniform size and with controlled separation on planar glassy carbon substrates. The nanodisk arrays (disk diameter ≈ 60 nm) were fabricat...

Journal: :Physical chemistry chemical physics : PCCP 2013
Ampornphan Siriviriyanun Toyoko Imae

Electrochemical sensors consisting of electrodes loaded with carbon nanotubes and Pt nanoparticles (PtNPs) protected by dendrimers have been developed using a facile method to fabricate them on two types of disposable electrochemical printed chips with a screen-printed circular gold or a screen-printed circular glassy carbon working electrode. The electrochemical performance of these sensors in...

2015
Sauro Pierucci Jiří J. Klemeš Chiara Genovese Claudio Ampelli Bhanu C. Marepally Georgia Papanikolaou Siglinda Perathoner Gabriele Centi

In this contribution we report on the electrocatalytic reduction of CO2 for the production of liquid fuels by using two different approaches under i) liquid and ii) gas phase conditions. The main aim of the work is the comparison of these two experimental setups, in terms of productivity, kinds of liquid compounds produced and efficiencies, due to the differences in the mechanism which underlay...

Journal: :Chemical communications 2009
Hua Bai Yuxi Xu Lu Zhao Chun Li Gaoquan Shi

Graphene sheets were stably dispersed in water by functionalization with sulfonated polyaniline (SPANI), and the composite film of SPANI-functionalized graphene showed improved electrochemical stability and enhanced electrocatalytic activity.

Journal: :Chemical communications 2011
Young Wook Lee Mi Ae Lim Shin Wook Kang Inkyu Park Sang Woo Han

Pt and Pd nanotubes could be prepared rapidly with high yields and good uniformity through the reduction of metal precursors in the presence of ZnO nanowires as inexpensive sacrificial templates. The prepared nanotubes showed efficient electrocatalytic properties toward alcohol oxidation.

Journal: :Chemical communications 2010
Yiqing Sun Chun Li Yuxi Xu Hua Bai Zhiyi Yao Gaoquan Shi

Graphitic carbon nitride, a polymeric catalyst, was immobilized on the surfaces of chemically converted graphene sheets to form a layered composite, which exhibited greatly improved conductivity and electrocatalytic performance on oxygen reduction reaction.

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