文献类型：期刊文献

英文题名：Facile fabrication of high-yield graphitic carbon nitride with a large surface area using bifunctional urea for enhanced photocatalytic performance

作者：Wang, Xue Lu[1];Yang, Hua Gui[1]

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

年份：2017

卷号：205

起止页码：624

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENTAL

收录：;EI(收录号：20170203238262);WOS:【SCI-EXPANDED(收录号:WOS:000393931000065)】；

基金：This work was financially supported by National Natural Science Foundation of China (21573038 and 21603073), the Fundamental Reserach Funds for Central Universities(WD1514303), SRF for ROCS, SEM, SRFDP, program for Shanghai Subject Chief Sceientist (15XD1501300) and China Postdoctoral science foundation Funded Project (2016M591615).

语种：英文

外文关键词：Photocatalysis; Graphitic carbon nitride; Hydrogen evolution; High-yield; Bifunctional

摘要：Graphitic carbon nitride (g-C3N4) has aroused intense expectations owing to its outstanding visible-light response capability for hydrogen generation from water. However, the low-yield, low practical surface area and high photogenerated charge recombination rate severely limits its photocatalytic performance. Here, in this study high-yield synthesis of g-C3N4 with a large surface area has been achieved successfully through an in situ pyrolysis of cyanamide with the assist of the bifunctional urea. During the synthesis process, urea may decompose into a lot of ammonia and carbon dioxide, which acts as the supplementary-nitrogen-source and bubble-generating template respectively. It is found that the surface area and photocatalytic activity can be controlled by adjusting the addition of the environmentally friendly bifunctional urea. The as-prepared g-C3N4 exhibits unique optical activity as well as photoelectriochemical activity for solar-to-chemical conversion, and this simple bifunctional method may open a new pathway for designing and optimizing of photocatalysts. (C) 2017 Elsevier B.V. All rights reserved.