Fabrication of direct Z-scheme Ta3N5-WO2.72 film heterojunction photocatalyst for enhanced hydrogen evolution
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- 作者：Wan-Pyng Hsu1 ; Mrinalini Mishra1 ; Wei-Szu Liu ; Chung-Yi Su ; Tsong-Pyng Perng ; tpperng@mx.nthu.edu.tw" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ta3N5 ; WO3 ; Z-scheme ; Atomic layer deposition ; H2 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：511-517
- 全文大小：2985 K
文摘
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Ta3N5-WO2.72 film was prepared via sol-gel and ALD followed by RTA as a direct Z-scheme photocatalyst.
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Enhanced visible light H2 evolution was observed even without co-catalyst.
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Direct Z-scheme (film) performed better than liquid-state Z-scheme (powders) for Ta3N5-WO2.72 (WO3) system.
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Conformal Ta3N5 film formed by ALD confirmed good physical contact, hence better electron migration.
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Mechanism of electron-hole recombination in Ta3N5-WO2.72 (WO3) system is proposed.