共 40 条
Facile synthesis of high quality Z-scheme W18O49 nanowire-g-C3N4 photocatalyst for the enhanced visible light-driven photocatalytic hydrogen evolution
被引:38
作者:

Zhang, Jinhong
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China

Liu, Jincheng
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China

Zhao, Wei
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China

Ding, Zhongxiang
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China

Mai, Jijin
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Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China

Fang, Yanxiong
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机构:
Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China
机构:
[1] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou, Guangdong, Peoples R China
基金:
中国国家自然科学基金;
关键词:
W18O49;
nanowire;
Z-scheme;
Graphitic carbon nitride;
Photocatalytic hydrogen evolution;
TUNGSTEN-OXIDE NANOWIRES;
NEAR-INFRARED ABSORPTION;
WATER;
WO3;
REDUCTION;
G-C3N4;
OXYGEN;
NANOPARTICLES;
GENERATION;
TIO2;
D O I:
10.1016/j.jallcom.2018.06.045
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Novel Z-scheme W18O49 nanowire-g-C3N4 nanosheet composite photocatalysts were prepared by a facile solvothermal process. The morphology of W18O49 nanocrystals was significantly changed from urchin sphere to nanowire bundles with the increase of C3N4 quantity. The W18O49-g-C3N4 composites enhance the ability of harvesting visible light, and promote the charge transfer across the composite interface. All the as-prepared composites show higher photocatalytic activity of hydrogen production than that of pure W18O49 and g-C3N4. And the WCN50 composite with 50 mg of g-C3N4 displays the optimal photocatalytic activity with the highest hydrogen production rate of 1.700 mmol g(-1) h(-1) under visible light-irradiation. The improved photocatalytic activity is due to the stronger light harvesting ability, the Z-scheme charge transfer mechanism to promote the interface charge transfer, and the prolonged lifetime of photogenerated electrons. Our work will provide a valuable reference for the design of highly efficient Zscheme photocatalysts for efficiently converting solar energy into chemical fuels. (C) 2018 Elsevier B.V. All rights reserved.
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页码:1 / 9
页数:9
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