Visible light-driven water oxidation with a subporphyrin sensitizer and a water oxidation catalyst

被引：61

作者：

Yamamoto, Masanori ^{[1
]}

Nishizawa, Yusuke ^{[1
]}

Chabera, Pavel ^{[2
]}

Li, Fusheng ^{[3
]}

Pascher, Torbjorn ^{[2
]}

Sundstrom, Villy ^{[2
]}

Sun, Licheng ^{[3
]}

Imahori, Hiroshi ^{[1
,4
]}

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Mol Engn, Nishikyo Ku, Kyoto 6158510, Japan

[2] Lund Univ, Dept Chem Phys, Box 124, S-22100 Lund, Sweden

[3] KTH Royal Inst Technol, Sch Chem Sci & Engn, Dept Chem, S-10044 Stockholm, Sweden

[4] Kyoto Univ, Inst Integrated Cell Mat Sci WPI ICeMS, Nishikyo Ku, Kyoto 6158510, Japan

来源：

CHEMICAL COMMUNICATIONS | 2016年 / 52卷 / 94期

基金：

瑞典研究理事会;

关键词：

ELECTRON-TRANSFER MEDIATOR; PHOTOELECTROCHEMICAL CELLS; CORE/SHELL PHOTOANODE; OXIDE SURFACES; METAL-OXIDES; SOLAR-CELLS; SINGLE-SITE; EFFICIENCY; COMPLEXES; DYNAMICS;

D O I：

10.1039/c6cc07877j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new subporphyrin was synthesized for use as a molecular sensitizer in electrochemical and dye-sensitized photoelectrochemical water oxidation. A photoelectrochemical cell with a TiO2 electrode modified with the sensitizer and a molecular water oxidation catalyst generated higher photocurrent than reference cells that have electrodes modified with either the photosensitizer or the catalyst under visible light (lambda > 500 nm) illumination. Oxygen evolution was confirmed after photolysis by GC and GC-MS analyses using isotope-labeling experiments. The large molar extinction coefficients of the ring-contracted porphyrin in the visible region enabled kinetic analysis by time-resolved transient absorption spectroscopy, which also supported the photocatalytic activity.

引用

页码：13702 / 13705

页数：4

共 43 条

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