Polycondensation of ammonium thiocyanate into novel porous g-C_3N_4 nanosheets as photocatalysts for enhanced hydrogen evolution under visible light irradiation

作     者：崔言娟 王愉雄 王浩 曹福 陈芳艳 Yanjuan Cui;Yuxiong Wang;Hao Wang;Fu Cao;Fangyan Chen

作者机构：江苏科技大学环境与化学工程学院江苏镇江212003 

基　　金：supported by the National Natural Science Foundation of China(21503096) the Natural Science Foundation of Jiangsu Province(BK20140507) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2016年第37卷第11期

页      码：1899-1906页

摘      要：Porous graphitic carbon nitride（pg-C3N4） nanosheets have been prepared through a one-step ammonia thermopolymerization *** effects of synthetic temperature on the structural,optical and photocatalytic properties of the samples have been *** results show that the heptazine-based conjugate heterocyclic structure was formed over 500℃,which is attributed to the inhibitory effect of ammonia from the decomposition of *** nanosheet morphology and an increased pore distribution with an enlarged surface area are observed for the samples obtained under high *** analysis results show that the bandgap of the samples widens and photoluminescene intensity is gradually quenched as the treating temperature is *** results demonstrate that a higher polymerization temperature improves the nanolayer structure,porosity and migration rate of the photo-induced carriers of the *** pg-C3N4 nanosheets prepared at 600℃ presents the highest photocatalytic activity for hydrogen evolution from water under visible-light *** study demonstrates a novel strategy for the synthesis and optimization of polymer semiconductor nanosheets with gratifying photocatalytic performance.

主 题 词：Carbon nitride Nanosheet Semiconductor Ammonia Photocatalysis Hydrogen evolution 

学科分类：081702[081702] 081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1016/S1872-2067(16)62509-3

馆 藏 号：203208504...