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

页码：12774 / 12780

页数：7

共 46 条

[1] Ethanol steam reforming over Rh and Pt catalysts: effect of temperature and catalyst deactivation [J].

Bilal, Muhammad ;

Jackson, S. David .

CATALYSIS SCIENCE & TECHNOLOGY, 2013, 3 (03) :754-766

[2] Evidence and implications of direct charge excitation as the dominant mechanism in plasmon-mediated photocatalysis [J].

Boerigter, Calvin ;

Campana, Robert ;

Morabito, Matthew ;

Linic, Suljo .

NATURE COMMUNICATIONS, 2016, 7

[3] Rattle-type Au@Cu2-xS hollow mesoporous nanocrystals with enhanced photothermal efficiency for intracellular oncogenic microRNA detection and chemo-photothermal therapy [J].

Cao, Yu ;

Li, Shuzhou ;

Chen, Chao ;

Wang, Dongdong ;

Wu, Tingting ;

Dong, Haifeng ;

Zhang, Xueji .

BIOMATERIALS, 2018, 158 :23-33

[4] Hydrogen Doped Metal Oxide Semiconductors with Exceptional and Tunable Localized Surface Plasmon Resonances [J].

Cheng, Hefeng ;

Wen, Meicheng ;

Ma, Xiangchao ;

Kuwahara, Yasutaka ;

Mori, Kohsuke ;

Dai, Ying ;

Huang, Baibiao ;

Yamashita, Hiromi .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2016, 138 (29) :9316-9324

[5] A Plasmonic Molybdenum Oxide Hybrid with Reversible Tunability for Visible-Light-Enhanced Catalytic Reactions [J].

Cheng, Hefeng ;

Qian, Xufang ;

Kuwahara, Yasutaka ;

Mori, Kohsuke ;

Yamashita, Hiromi .

ADVANCED MATERIALS, 2015, 27 (31) :4616-4621

[6] Ethanol Dehydration and Dehydrogenation on γ-Al2O3: Mechanism of Acetaldehyde Formation [J].

DeWilde, Joseph F. ;

Czopinski, Christopher J. ;

Bhan, Aditya .

ACS CATALYSIS, 2014, 4 (12) :4425-4433

[7] Surface Plasmon Resonance Enhanced Light Absorption and Photothermal Therapy in the Second Near-Infrared Window [J].

Ding, Xianguang ;

Liow, Chi Hao ;

Zhang, Mengxin ;

Huang, Renjun ;

Li, Chunyan ;

Shen, He ;

Liu, Mengya ;

Zou, Yu ;

Gao, Nan ;

Zhang, Zhijun ;

Li, Yonggang ;

Wang, Qiangbin ;

Li, Shuzhou ;

Jiang, Jiang .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (44) :15684-15693

[8] Nonequilibrium-Plasma-Synthesized ZnO Nanocrystals with Plasmon Resonance Tunable via Al Doping and Quantum Confinement [J].

Greenberg, Benjamin L. ;

Ganguly, Shreyashi ;

Held, Jacob T. ;

Kramer, Nicolaas J. ;

Mkhoyan, K. Andre ;

Aydil, Eray S. ;

Kortshagen, Ume R. .

NANO LETTERS, 2015, 15 (12) :8162-8169

[9] Hydrogen production from ethanol reforming: Catalysts and reaction mechanism [J].

Hou, Tengfei ;

Zhang, Shaoyin ;

Chen, Yongdong ;

Wang, Dazhi ;

Cai, Weijie .

RENEWABLE & SUSTAINABLE ENERGY REVIEWS, 2015, 44 :132-148

[10] Structurally Well-Defined Au@Cu2-xS Core-Shell Nanocrystals for Improved Cancer Treatment Based on Enhanced Photothermal Efficiency [J].

Ji, Muwei ;

Xu, Meng ;

Zhang, Wei ;

Yang, Zhenzhong ;

Huang, Liu ;

Liu, Jiajia ;

Zhang, Yong ;

Gu, Lin ;

Yu, Youxing ;

Hao, Weichang ;

An, Pengfei ;

Zheng, Lirong ;

Zhu, Hesun ;

Zhang, Jiatao .

ADVANCED MATERIALS, 2016, 28 (16) :3094-3101

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