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Enhancement of Solar Hydrogen Evolution from Water by Surface Modification with CdS and TiO 2 on Porous CuInS 2 Photocathodes Prepared by an Electrodeposition–Sulfurization Method
Author(s) -
Zhao Jiao,
Minegishi Tsutomu,
Zhang Li,
Zhong Miao,
Nakabayashi Mamiko,
Ma Guijun,
Hisatomi Takashi,
Katayama Masao,
Ikeda Shigeru,
Shibata Naoya,
Yamada Taro,
Domen Kazunari
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201406483
Subject(s) - photocurrent , porosity , materials science , cathodic protection , electrode , chemical engineering , water splitting , thin film , surface modification , hydrogen , photoelectrochemical cell , photoelectrochemistry , inorganic chemistry , electrochemistry , catalysis , optoelectronics , nanotechnology , electrolyte , chemistry , photocatalysis , composite material , biochemistry , organic chemistry , engineering
Porous films of p‐type CuInS 2 , prepared by sulfurization of electrodeposited metals, are surface‐modified with thin layers of CdS and TiO 2 . This specific porous electrode evolved H 2 from photoelectrochemical water reduction under simulated sunlight. Modification with thin n‐type CdS and TiO 2 layers significantly increased the cathodic photocurrent and onset potential through the formation of a p–n junction on the surface. The modified photocathodes showed a relatively high efficiency and stable H 2 production under the present reaction conditions.