Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 391, Issue -, Pages 191-197Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2014.04.034
Keywords
Triazenido-copper(II) complex; Molecular electro-catalyst; Hydrogen evolution
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Funding
- Research Foundation for Returned Chinese Scholars Overseas of Chinese Education Ministry [B7050170]
- National Natural Science Foundation of China [20971045, 21271073]
- Student Research Program (SRP) of South China University of Technology [B15-B7050170]
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The reaction of 1,3-bis[(4-chloro)benzene]triazene (HL) and CuCl2 center dot 2H(2)O affords a dinuclear triazenido-copper(II) complex [Cu2L4(NCCH3)] (1), a new molecular electrocatalyst, which has been determined by X-ray crystallography. Electrochemical studies show that complex 1 can catalyze hydrogen evolution from acetic acid or water. Turnover frequency (TOF) reaches a maximum of 43 (in DMF) and 174 (in phosphate buffer, pH 6) moles of hydrogen per mole of catalyst per hour, respectively. Sustained proton reduction catalysis occurs at glassy carbon (GC) electrode to give H-2 over a 72 h electrolysis period and no observable decomposition of the catalyst. (C) 2014 Elsevier B.V. All rights reserved.
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