Light-driven Hydrogen Evolution from Water by a Tripodal Silane Based Co6IIL81 Octahedral Cage

被引：22

作者：

Deshmukh, Mahesh S. ^{[1
]}

Mane, Vishwanath S. ^{[3
]}

Kumbhar, Avinash S. ^{[3
]}

Boomishankar, Ramamoorthy ^{[1
,2
]}

机构：

[1] Indian Inst Sci Educ & Res, Dept Chem, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India

[2] Indian Inst Sci Educ & Res, Ctr Energy Sci, Dr Homi Bhabha Rd, Pune 411008, Maharashtra, India

[3] Savitribai Phule Pune Univ, Dept Chem, Pune 411007, Maharashtra, India

来源：

INORGANIC CHEMISTRY | 2017年 / 56卷 / 21期

关键词：

MOLECULAR COBALT COMPLEX; ARTIFICIAL PHOTOSYNTHESIS; PENTADENTATE LIGAND; CATALYSTS; REDUCTION; GENERATION; SYSTEMS; CELLS; M6L8; ELECTROCATALYSTS;

D O I：

10.1021/acs.inorgchem.7b02074

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The octahedral cage assembly [(Co6L8CI6)-L-II-C-1(H2O)(6)]C1=l(6) has been synthesized in a single-step reaction by using a polypyridyl-functionalized tripodal silane ligand. The electrochemical behavior of the cage in water exhibits the pH dependence of potential as well as catalytic current indicating the possible involvement of proton -coupled electron transfer in H-2 evolution. Electrocatalytic hydrogen evolution from an aqueous buffered solution gave a turnover frequency of 16 h(-1). Further, this cage assembly has been explored as a photocatalyst (blue light irradiation lambda 469 nm) for the evolution of H-2 from water in the presence of Ru(bpy)(3)(2+) as a photosensitizer and ascorbic acid as a sacrificial electron donor. This catalytic reaction is found to be pseudo first order with a turnover frequency of 20.50 h(-1).

引用

页码：13286 / 13292

页数：7

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