Dual modification of hematite photoanode by Sn-doping and Nb2O5 layer for water oxidation
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- 作者：Tae Hwa Jeona ; Alok D. Bokarea ; Dong Suk Hanb ; Ahmed Abdel-Wahabb ; Hyunwoong Parkc ; hwp@knu.ac.kr" class="auth_mail" title="E-mail the corresponding author ; Wonyong Choia ; wchoi@postech.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Solar fuel ; Photoelectrochemistry ; Water splitting ; Photoanode modification ; Oxygen evolution
- 刊名：Applied Catalysis B: Environmental
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：201
- 期：Complete
- 页码：591-599
- 全文大小：3085 K
文摘
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Hematite doped with Sn(IV) and coated with an ultrathin Nb2O5 layer are synthesized.
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Dual-modified hematite exhibits remarkably high photoelectrochemical efficiencies.
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A stable photocurrent is maintained under prolonged irradiation over 24 h.
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O2 is linearly produced from water with an efficiency of >80% without deactivation.
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The effect is in-depth studied in terms of charge separation and injection.