Dramatic Activity of C3N4/BiPO4 Photocatalyst with Core/Shell Structure Formed by Self-Assembly

被引：861
作者：
Pan, Chengsi [1 ]
Xu, Jing [1 ]
Wang, Yajun [1 ]
Li, Di [1 ]
Zhu, Yongfa [1 ]
机构：
[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
来源：
ADVANCED FUNCTIONAL MATERIALS | 2012年 / 22卷 / 07期
基金：
中国国家自然科学基金;
关键词：
C3N4; BiPO4; photocatalysis; core; shell nanoparticles; self-assembly; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; VISIBLE-LIGHT; GRAPHITIC C3N4; CARBON NITRIDE; TIO2; EFFICIENT; DEGRADATION; HYBRIDIZATION; ENHANCEMENT; WATER;
D O I：
10.1002/adfm.201102306
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Core/shell structured C3N4/BiPO4 photocatalyst is fabricated via a facile ultrasonic dispersion method. The thickness of the shell may be controlled by tuning the amount of C3N4 in the dispersion, which determines the enhanced level of photocatalytic activity. The optimum photocatalytic activity of C3N4/BiPO4 at a weight ratio of 4% (C3N4/BiPO4) under UV irradiation is almost 4.5 times as high as that of reference P25 (TiO2) and 2.5 times of BiPO4. More attractively, the dramatic visible light photocatalytic activity is generated due to the C3N4 loaded. The enhancement in performance is demonstrated to be the match of lattice and energy level between the C3N4 and BiPO4. This match facilitates the separation and transfer of photogenerated electronhole pairs at the heterojunction interfaces and may be important for other core/shell structured materials. In addition, this method is expected to be extended for other C3N4 loaded materials.
引用
收藏
页码：1518 / 1524
页数：7
相关论文
共 39 条
[1]   Carbon nitride prepared by solvothermal method [J].
Cao, CB ;
Lv, Q ;
Zhu, HS .
DIAMOND AND RELATED MATERIALS, 2003, 12 (3-7) :1070-1074
[2]   Titanium dioxide nanomaterials: Synthesis, properties, modifications, and applications [J].
Chen, Xiaobo ;
Mao, Samuel S. .
CHEMICAL REVIEWS, 2007, 107 (07) :2891-2959
[3]   Ordered Mesoporous SBA-15 Type Graphitic Carbon Nitride: A Semiconductor Host Structure for Photocatalytic Hydrogen Evolution with Visible Light [J].
Chen, Xiufang ;
Jun, Young-Si ;
Takanabe, Kazuhiro ;
Maeda, Kazuhiko ;
Domen, Kazunari ;
Fu, Xianzhi ;
Antonietti, Markus ;
Wang, Xinchen .
CHEMISTRY OF MATERIALS, 2009, 21 (18) :4093-4095
[4]   Photocorrosion Inhibition and Enhancement of Photocatalytic Activity for ZnO via Hybridization with C60 [J].
Fu, Hongbo ;
Xu, Tongguang ;
Zhu, Shengbao ;
Zhu, Yongfa .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (21) :8064-8069
[5]  
Guo Q., 2004, CHEM COMMUN, V26
[6]   Dramatic visible photocatalytic degradation performances due to synergetic effect of TiO2 with PANI [J].
Hao Zhang ;
Ruilong Zong ;
Jincai Zhao ;
Yongfa Zhu .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (10) :3803-3807
[7]   TiO2 photocatalysis:: A historical overview and future prospects [J].
Hashimoto, K ;
Irie, H ;
Fujishima, A .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2005, 44 (12) :8269-8285
[8]   ENVIRONMENTAL APPLICATIONS OF SEMICONDUCTOR PHOTOCATALYSIS [J].
HOFFMANN, MR ;
MARTIN, ST ;
CHOI, WY ;
BAHNEMANN, DW .
CHEMICAL REVIEWS, 1995, 95 (01) :69-96
[9]   Comparative Photocatalytic Ability of Nanocrystal-Carbon Nanotube and -TiO2 Nanocrystal Hybrid Nanostructures [J].
Ji, Kyung Hwan ;
Jang, Dong Myung ;
Cho, Yong Jae ;
Myung, Yoon ;
Kim, Han Sung ;
Kim, Yunhee ;
Park, Jeunghee .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (46) :19966-19972
[10]   Efficient photochemical water splitting by a chemically modified n-TiO2 2 [J].
Khan, SUM ;
Al-Shahry, M ;
Ingler, WB .
SCIENCE, 2002, 297 (5590) :2243-2245
1234