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Engineering    2017, Vol. 3 Issue (3) : 285 -289     https://doi.org/10.1016/J.ENG.2017.03.005
Research |
Improved Oxygen Evolution Kinetics and Surface States Passivation of Ni-Bi Co-Catalyst for a Hematite Photoanode
Ke Dang1,2,Tuo Wang1,2,Chengcheng Li1,2,Jijie Zhang1,2,Shanshan Liu1,2,Jinlong Gong1,2()
1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
2. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
Abstract
Abstract  

This paper describes the combinational surface kinetics enhancement and surface states passivation of nickel-borate (Ni-Bi) co-catalyst for a hematite (Fe2O3) photoanode. The Ni-Bi-modified Fe2O3 photoanode exhibits a cathodic onset potential shift of 230 mV and a 2.3-fold enhancement of the photocurrent at 1.23 V, versus the reversible hydrogen electrode (RHE). The borate (Bi) in the Ni-Bi film promotes the release of protons for the oxygen evolution reaction (OER).

Keywords Nickel-borate      Hematite      Oxygen evolution reaction      Co-catalyst     
Corresponding Authors: Jinlong Gong   
Just Accepted Date: 17 May 2017   Online First Date: 21 June 2017    Issue Date: 30 June 2017
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Ke Dang
Tuo Wang
Chengcheng Li
Jijie Zhang
Shanshan Liu
Jinlong Gong
Cite this article:   
Ke Dang,Tuo Wang,Chengcheng Li, et al. Improved Oxygen Evolution Kinetics and Surface States Passivation of Ni-Bi Co-Catalyst for a Hematite Photoanode[J]. Engineering, 2017, 3(3): 285 -289 .
URL:  
http://engineering.org.cn/EN/10.1016/J.ENG.2017.03.005     OR     http://engineering.org.cn/EN/Y2017/V3/I3/285
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