Stable Cu2O@g-C3N4 core@shell nanostructures: Efficient visible-light photocatalytic hydrogen evolution

被引：61

作者：

Liu, Li ^{[1
]}

Qi, Yuehong ^{[1
]}

Hu, Jinshan ^{[1
]}

An, Weijia ^{[1
]}

Lin, Shuanglong ^{[1
]}

Liang, Yinghua ^{[1
]}

Cui, Wenquan ^{[1
]}

机构：

[1] North China Univ Sci & Technol, Coll Chem Engn, Tangshan 063009, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 158卷

基金：

中国国家自然科学基金;

关键词：

Semiconductors; Composite materials; FTIR; Hydrogen production; STABILITY; MICROSPHERES; ENHANCEMENT; IRRADIATION; PERFORMANCE;

D O I：

10.1016/j.matlet.2015.06.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cu2O@g-C3N4 core@shell composites were prepared by a combined solvothermal and chemisorption method, in which g-C3N4 was successfully coated onto Cu2O nanospheres via a spontaneous adsorption process. The results showed that the g-C3N4-coated Cu2O nanospheres possessed significantly improved activity for photocatalytic hydrogen production, compared to that of pure Cu2O and g-C3N4, respectively, reaching an optimal yield of up to 606.86 mu mol g(-1) in 3 h at a g-C3N4 content of 5 wt%. The improved photocatalytic performance was due to the synergistic effects of large contact area, specific energy band structure, and enhanced charge separation at the interface of Cu2O and g-C3N4. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：278 / 281

页数：4

共 14 条

[1] Construction of Heterostructured g-C3N4/Ag/TiO2 Microspheres with Enhanced Photocatalysis Performance under Visible-Light Irradiation [J].

Chen, Yanfeng ;

Huang, Weixin ;

He, Donglin ;

Yue Situ ;

Huang, Hong .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (16) :14405-14414

[2] Morphology-controlled hydrothermal synthesis and growth mechanism of microcrystal Cu2O [J].

Lan, Xiang ;

Zhang, Junying ;

Gao, Hong ;

Wang, Tianmin .

CRYSTENGCOMM, 2011, 13 (02) :633-636

[3] Fabrication of inorganic-organic core-shell heterostructure: novel CdS@g-C3N4 nanorod arrays for photoelectrochemical hydrogen evolution [J].

Li, Yuangang ;

Wei, Xiaoliang ;

Li, Huajing ;

Wang, Rongrong ;

Feng, Juan ;

Yun, Hui ;

Zhou, Anning .

RSC ADVANCES, 2015, 5 (19) :14074-14080

[4] A cuprous oxide-reduced graphene oxide (Cu2O-rGO) composite photocatalyst for hydrogen generation: employing rGO as an electron acceptor to enhance the photocatalytic activity and stability of Cu2O [J].

Tran, Phong D. ;

Batabyal, Sudip K. ;

Pramana, Stevin S. ;

Barber, James ;

Wong, Lydia H. ;

Loo, Say Chye Joachim .

NANOSCALE, 2012, 4 (13) :3875-3878

[5] Preparation of p-n junction Cu2O/BiVO4 heterogeneous nanostructures with enhanced visible-light photocatalytic activity [J].

Wang, Wenzhong ;

Huang, Xiangwei ;

Wu, Shuang ;

Zhou, Yixi ;

Wang, Lijuan ;

Shi, Honglong ;

Liang, Yujie ;

Zou, Bin .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2013, 134 :293-301

[6]

Wang XC, 2009, NAT MATER, V8, P76, DOI [10.1038/nmat2317, 10.1038/NMAT2317]

[7] Preparation and Enhanced Visible-Light Photocatalytic H2-Production Activity of Graphene/C3N4 Composites [J].

Xiang, Quanjun ;

Yu, Jiaguo ;

Jaroniec, Mietek .

JOURNAL OF PHYSICAL CHEMISTRY C, 2011, 115 (15) :7355-7363

[8] Photodegradation Performance of g-C3N4 Fabricated by Directly Heating Melamine [J].

Yan, S. C. ;

Li, Z. S. ;

Zou, Z. G. .

LANGMUIR, 2009, 25 (17) :10397-10401

[9] Enhancement of the visible light activity and stability of Ag2CO3 by formation of AgI/Ag2CO3 heterojunction [J].

Yu, Changlin ;

Wei, Longfu ;

Zhou, Wanqin ;

Chen, Jianchai ;

Fan, Qizhe ;

Liu, Hong .

APPLIED SURFACE SCIENCE, 2014, 319 :312-318

[10] Phase Transformation Synthesis of Novel Ag2O/Ag2CO3 Heterostructures with High Visible Light Efficiency in Photocatalytic Degradation of Pollutants [J].

Yu, Changlin ;

Li, Gao ;

Kumar, Santosh ;

Yang, Kai ;

Jin, Rongchao .

ADVANCED MATERIALS, 2014, 26 (06) :892-898

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