Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting

doi:10.11944/j.issn.1000-0518.2015.05.140284

Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (5): 576-582.DOI: 10.11944/j.issn.1000-0518.2015.05.140284

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Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting

MA Nan, GAO Guofeng, HAO Genyan, ZHAO Qiang, LI Jinping^*

Research Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan 030024,China

Received:2014-08-13 Revised:2014-11-28 Accepted:2015-01-19 Published:2015-05-05 Online:2015-05-05
Contact: LI Jinping
Supported by:
Supported by the Natural Science Foundation of Shanxi Province(No.2014011017-1), the National Natural Science Foundation of China(No.21476153);the Program for the Outstanding Innovative Teams of Higher Learning Institutions of Shanxi

Abstract

Abstract:

Due to the earth-abundance and prevalence in photovoltaic industries, silicon was used as light-harvesting material to from a composite with amorphous cobalt oxides oxygen-evolving catalyst(OEC) to carry out the solar-driven water-splitting in near-neutral conditions for hydrogen production. The device can efficiently utilize the solar spectrum for the photon-charge conversion and allow water splitting. The Co-OEC prepared by electrolysis deposition for 400 s exhibits excellent oxygen evolution properties, with a current density of 1.7×10^-2 A/cm² and a oxygen evolution rate of 1.28 mol/(h·m²) in the potassium tetraborate buffer solution(pH=9.2) at 0 V vs.NHE under AM1.5 simulated sunlight.

Key words: semiconductor silicon, cobalt-oxygen-evolving catalyst, in situ preparation, hydrogen evolution, near-neutral

CLC Number:

MA Nan, GAO Guofeng, HAO Genyan, ZHAO Qiang, LI Jinping. Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting[J]. Chinese Journal of Applied Chemistry, 2015, 32(5): 576-582.

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Cobalt Oxygen-evolving Catalysts Generated in Situ and Interfaced with Silicon-based Semiconductors for Solar Water Splitting

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