Template-free synthesis of g-C3N4 microprisms for significant enhancement of photocatalytic H2 evolution under visible light

被引：6
|
作者：
He, Xingchen [1 ]
Cai, Yanqin [1 ]
Chen, Jingling [1 ]
Gao, Bifen [1 ]
Lin, Bizhou [1 ]
Chen, Yilin [1 ]
机构：
[1] Huaqiao Univ, Coll Mat Sci & Engn, Key Lab Funct Mat Fujian Higher Educ, Xiamen 361021, Peoples R China
来源：
MATERIALS LETTERS | 2016年 / 185卷
关键词：
Graphitic carbon nitride; Multilayer structure; Microstructure; Solar energy materials; H-2; production; GRAPHITIC CARBON NITRIDE; HYDROGEN EVOLUTION; CONSTRUCTION; WATER; XPS;
D O I：
10.1016/j.matlet.2016.09.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Graphitic carbon nitride (C3N4) hexagonal microprisms were synthesized via a self-assembly route using (NH4)(2)CO3 as a structure-directing reagent. It shows that the extraordinary hierarchical structure is favorable to improving the photocatalytic activity of C3N4 toward water splitting under visible light irradiation (lambda>420 nm). The photocatalytic H-2-evolution rate on the microprisms is 185 mu mol/h, 16.8 times higher than that over bulk C3N4. The enhanced photocatalytic performance of the as-prepared micro prisms mainly originates from the characteristic micro-nanostructure, possessing enlarged surface area for efficient charge separation. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：299 / 302
页数：4
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