نتایج جستجو برای: hydrogen evolution

تعداد نتایج: 479832  

2016
Lili Zhu Haiping Lin Youyong Li Fan Liao Yeshayahu Lifshitz Minqi Sheng Shuit-Tong Lee Mingwang Shao

Currently, platinum-based electrocatalysts show the best performance for hydrogen evolution. All hydrogen evolution reaction catalysts should however obey Sabatier's principle, that is, the adsorption energy of hydrogen to the catalyst surface should be neither too high nor too low to balance between hydrogen adsorption and desorption. To overcome the limitation of this principle, here we choos...

2015
Min-Rui Gao Jin-Xia Liang Ya-Rong Zheng Yun-Fei Xu Jun Jiang Qiang Gao Jun Li Shu-Hong Yu

The electroreduction of water for sustainable hydrogen production is a critical component of several developing clean-energy technologies, such as water splitting and fuel cells. However, finding a cheap and efficient alternative catalyst to replace currently used platinum-based catalysts is still a prerequisite for the commercialization of these technologies. Here we report a robust and highly...

2013
Eric J. Popczun James R. McKone Carlos G. Read Adam J. Biacchi Alex M. Wiltrout Nathan S. Lewis Raymond E. Schaak

S1 Nanostructured Ni2P as an Electrocatalyst for the Hydrogen Evolution Reaction Eric J. Popczun, James R. McKone, Carlos G. Read, Adam J. Biacchi, Alex M. Wiltrout, Nathan S. Lewis,* Raymond E. Schaak* 1 Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, PA 16802. 2 Division of Chemistry and Chemical Engineering, California Institute o...

2013
Patrick C. Hallenbeck Leon V. Kochian John R. Benemann

Cultures of Anabaena cylindrica, grown on media containing 5 m M NH4C1 (which represses heterocyst formation), evolved hydrogen after a period of dark incubation under an argon atmosphere. This hydrogen production was not due to nitrogenase activity, which was nearly undetectable, but was due to a hydrogenase. Cultures grown on media with tungsten substituted for molybdenum had a high frequency...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده مهندسی شیمی 1389

on this project we try to calculated power of hydrogen on dycarbonil compound in different ways ; the first way is shoster way , for sain power of hydrogen notice the different power between central conforms on it and main conform that’s didn’t have hydrogen joint . or in other way different of energy between open and close form. second way, is average way? this is for way that studied conf...

2012
Hyun Woo Kang Sung Nam Lim Dongsu Song Seung Bin Park

The organic-inorganic composite g-C3N4eSrTiO3:Rh was prepared for the first time as a photocatalyst for hydrogen production and the resulting hydrogen evolution rate under visible light irradiation from aqueous methanol solution was measured. A high hydrogen evolution rate of 223.3 mmol h 1 was achieved by using 0.1 g of as-prepared photocatalyst powder comprised of 20 wt.% g-C3N4 80 wt.% SrTiO...

Journal: :Nature materials 2013
Damien Voiry Hisato Yamaguchi Junwen Li Rafael Silva Diego C B Alves Takeshi Fujita Mingwei Chen Tewodros Asefa Vivek B Shenoy Goki Eda Manish Chhowalla

Efficient evolution of hydrogen through electrocatalysis at low overpotentials holds tremendous promise for clean energy. Hydrogen evolution can be easily achieved by electrolysis at large potentials that can be lowered with expensive platinum-based catalysts. Replacement of Pt with inexpensive, earth-abundant electrocatalysts would be significantly beneficial for clean and efficient hydrogen e...

Journal: :Physical Chemistry Chemical Physics 2013

Journal: :Accounts of Chemical Research 2009

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