文献类型：期刊文献

英文题名：Facile Fabrication of Large-Aspect-Ratio g-C3N4 Nanosheets for Enhanced Photocatalytic Hydrogen Evolution

作者：Fang, Li Jun[1];Li, Yu Hang[1];Liu, Peng Fei[1];Wang, Dan Ping[1];Zeng, Hui Dan[1];Wang, Xue Lu[1];Yang, Hua Gui[1]

机构：[1]East China Univ Sci & Technol, Minist Educ, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2017

卷号：5

期号：3

起止页码：2039

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20171003423487);WOS:【SCI-EXPANDED(收录号:WOS:000395846900004)】；

基金：This work was financially supported by Natural Science Foundation of China (21573068 and 21603073), Program of Shanghai Subject Chief Scientist (15XD1501300), Fundamental Research Funds for the Central Universities (WD1313009 and WD1514303) and China Postdoctoral Science Foundation Funded Project (2016M591615).

语种：英文

外文关键词：Photocatalysis; Hydrogen evolution; Graphitic carbon nitride nanosheets; Liquid etching; Anhydrous ethylenediamine

摘要：Exfoliation of bulk graphitic carbon nitride (BCN) into two-dimensional (2D) nanosheets is one of the effective strategies to improve its photocatalytic performance. Compared with BCN, the 2D g-C3N4 nanosheets (CNNS) have larger specific surface areas and more reaction sites. With the etching assistance of anhydrous ethylenediamine, BCN can be successfully peeled off into 2D CNNS with a large lateral size of more than 15 mu m which is much larger than that of other works. After appropriate etch by anhydrous ethylenediamine, the specific surface area of g-C3N4 expands from 4.7 to 31.1 m(2) g(-1) and the photocatalytic hydrogen evolution rate increases 7.4 times, from 4.8 to 35.3 mu mol h(-1). In contrast to other reported methods, the strategy to fabricate 2D CNNS in this work is convenient and it is the first time to report the fabrication of 2D CNNS with the assistance of alkaline reagent.