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H 2 Generation from a homogeneous photocatalytic system containing noble‐metal‐free Co(II) complex under the irradiation of visible light
Author(s) -
Rao Heng,
Wang ZhiYuan,
Wang Jun,
Hu XiaoZong,
Fan YaoTing,
Hou HongWei
Publication year - 2014
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.3213
Subject(s) - photocatalysis , catalysis , irradiation , triethylamine , eosin y , noble metal , photodissociation , chemistry , photosensitizer , photochemistry , visible spectrum , turnover number , yield (engineering) , metal , nuclear chemistry , materials science , organic chemistry , physics , optoelectronics , nuclear physics , metallurgy
SUMMARY A noble‐metal‐free molecular catalyst, [Co(dmbp) 3 ]Cl 2 (dmbp = 4,4 ’ ‐dimethyl‐2,2 ’ ‐bipyridyl) was prepared for photocatalytic H 2 generation. A three‐component photocatalytic system was constructed by combination of [Co(dmbp) 3 ]Cl 2 as catalyst, Eosin Y as photosensitizer and triethylamine as sacrificial electron donor to give an efficient H 2 generation system under visible‐light irradiation (λ > 420 nm). The maximum H 2 yield was up to 249.2 turnover number (vs. catalyst) over 2 h irradiation under the conditions with catalyst of 4.0 × 10 −4 M, 10% TEA (v/v), EY 2− of 4.0 × 10 −4 M and pH 10 in MeCN/H 2 O (1 : 1,v/v). Furthermore, the dynamics behaviors of the photolysis system were also briefly discussed. Copyright © 2014 John Wiley & Sons, Ltd.