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

页码：299 / 302

页数：4

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