文献类型：期刊文献

英文题名：Self-modification of g-C₃N₄ with its quantum dots for enhanced photocatatytic activity

作者：Zhou, Liang[1];Tian, Yunhao[1];Lei, Juying[1];Wang, Lingzhi[2,3];Liu, Yongdi[1];Zhang, Jinlong[2,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2018

卷号：8

期号：10

起止页码：2617

外文期刊名：CATALYSIS SCIENCE & TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000435868200013)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21777044), the National Key Research and Development Program (2016YFA0204200), the China Postdoctoral Science Foundation (2015T8049), and the Fundamental Research Funds for the Central Universities (222201714061 and 222201817009).

语种：英文

摘要：The photocatalytic activity of g-C3N4 was restricted by the fast charge recombination of photo-generated electrons and holes. In this work, a g-C3N4 metal-free composite modified with g-C3N4 quantum dots (CNQDs) (CNQDs/CN) was successfully prepared by a simple solvothermal method aiming to greatly promote the charge separation rate. The CNQDs/CN composite was confirmed by HRTEM and XPS measurements and exhibited outstanding photocatalytic activity in the degradation of organic pollutants represented by Rhodamine B. The enhanced photocatalytic performance of the CNQDs/CN composite can be ascribed to the effective charge separation and transfer across the interfaces between g-C3N4 and CNCtDs, which benefits from the excellent photoelectrochemical properties as well as the prolonged lifetime of charge carriers. The self-modification strategy provides a rational and interesting design idea to fabricate highly efficient photocatalysts.