Self-Z-scheme plasmonic tungsten oxide nanowires for boosting ethanol dehydrogenation under UV-visible light irradiation

被引：25
作者：
Lu, Changhai [1 ]
Li, Juan [1 ]
Chen, Guanying [1 ]
Li, Baojun [1 ]
Lou, Zaizhu [1 ]
机构：
[1] Jinan Univ, Inst Nanophoton, Guangzhou 511443, Guangdong, Peoples R China
来源：
NANOSCALE | 2019年 / 11卷 / 27期
基金：
中国国家自然科学基金;
关键词：
HYDROGEN GENERATION; RESONANCE; NANOCRYSTALS; CO2; PHOTOCATALYST; ACETALDEHYDE; CONVERSION; CATALYSTS;
D O I：
10.1039/c9nr03741a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Nonstoichiometric tungsten oxides (WO3-x) with abundant oxygen vacancies were synthesized and used as nonmetallic plasmonic photocatalysts to promote ethanol dehydrogenation under UV-visible light irradiation. Plasmonic WO3-x have unique electronic structures that act as Z-scheme heterostructures. UV-excited photoelectrons were injected into the conduction band of WO3-x, stabilizing the free electron density and boosting plasmonic hot electron generation for ethanol dehydrogenation. The synergetic effect of UV and visible light excitations greatly enhances the aldehyde generation to 2696 mu mol g(-1) (3 hours) with a high selectivity of 91%, which is 74-fold and 12-fold higher than those obtained under only UV or visible light irradiation, respectively.
引用
收藏
页码：12774 / 12780
页数：7
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