Hydrogen Photoassisted Generation by Visible Light and an Earth Abundant Photocatalyst: Pyrite (FeS2)

被引：33

作者：

Barawi, Mariam ^{[1
,2
]}

Ferrer, Isabel J. ^{[1
]}

Flores, Eduardo ^{[1
]}

Yoda, Satoko ^{[1
]}

Ares, Jose R. ^{[1
]}

Sanchez, Carlos ^{[1
]}

机构：

[1] Univ Autonoma Madrid, Dept Fis Mat, MIRE Grp, E-28049 Madrid, Spain

[2] Fdn Ist Italiano Tecnol, Ctr Biomol Nanotechnol, I-73010 Arnesano, LE, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2016年 / 120卷 / 18期

关键词：

IRON PYRITE; THIN-FILMS; BAND-GAP; NATURAL PYRITE; PHOTOELECTRODES; PHOTOLYSIS; LAYER; WATER; CDS;

D O I：

10.1021/acs.jpcc.5b11482

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

N-Type pyrite (FeS2) thin films, deposited on titanium substrates, have been synthesized and photoelectrochemically characterized. Its flat band potential has been estimated to be -0.75 +/- 0.05V vs Ag/AgCl by electrochemical impedance spectroscopy (EIS). The corresponding energy level diagram of the FeS2/electrolyte interface has been established. Profuse hydrogen flows have been produced under visible light illumination of FeS2 photoanode in a photo electrochemical cell (PEC) at different bias potentials. Their values, measured by mass spectrometry (MS), were higher than 5 mu mol H-2/min.cm(2). Hydrogen photogeneration efficiencies of similar to 8% have been reached.

引用

页码：9547 / 9552

页数：6

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