文献类型：期刊文献

英文题名：Morphology and defects regulation of carbon nitride by hydrochloric acid to boost visible light absorption and photocatalytic activity

作者：Dong, Changchang[1];Ma, Zhiyuan[2];Qie, Runtian[1];Guo, Xuhong[1,3];Li, Cuihua[1];Wang, Rongjie[1];Shi, Yulin[1];Dai, Bin[1];Jia, Xin[1]

机构：[1]Shihezi Univ, Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan,Ke, Shihezi 832003, Peoples R China;[2]Univ Montreal, Dept Chim, CP 6128,Succursale Ctr Ville, Montreal, PQ H3C 3J7, Canada;[3]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2017

卷号：217

起止页码：629

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20172503803289);WOS:【SCI-EXPANDED(收录号:WOS:000405158000062)】；

基金：This work was supported by the Natural Science Foundation of China (21364010, 51663021), Bingtuan Excellent Young Scholars (CZ027205), the Bingtuan Innovation Team in Key Areas (2015BD003) and Yangtze River scholar research project of Shihezi University (No. CJXZ201401).

语种：英文

外文关键词：Ultrathin carbon nitride nanosheets; Visible light photocatalysis; Morphology and defect regulation

摘要：In this work, a hydrochloric acid assisted exfoliation approach to prepare the ultrathin.carbon nitride (U-CN) nanosheet and to regulate its morphology and defects was reported. Based on moderate oxidation of hydrochloric acid, bulk carbon nitride (BCN) was just right broken into small pieces with protonation, which is beneficial to the exfoliation of BCN to U-CN nanosheets. Meanwhile, the main structure of CN do not be destroyed. Moreover, hydrochloric acid gives priority to cleave the bridging N atoms with rich elections, leading to the formation of the favorable defects and improving its photocatalytic performance. The obtained U-CN nanosheets prepared in a suitable HCl concentration exhibits enhanced photocatalytic efficiency for hydrogen evolution and Rhodamine B degradation under visible light. Such U-CN nanosheets with simple preparation, low cost, good yield and good photocatalytic activity might shed light on an acid-assisted method for developing high-performance CN photocatalysts. (C) 2017 Elsevier B.V. All rights reserved,