文献类型：期刊文献

英文题名：Carbon Vacancy Mediated Incorporation of Ti3C2 Quantum Dots in a 3D Inverse Opal g-C3N4 Schottky Junction Catalyst for Photocatalytic H2O2 Production

作者：Lin, Sufen[1,2];Zhang, Ning[1,2];Wang, Fuchen[3];Lei, Juying[1,2,4];Zhou, Liang[1,2];Liu, Yongdi[1,2,4];Zhang, Jinlong[5]

机构：[1]East China Univ Sci & Technol, Natl Engn Lab Ind Wastewater Treatment, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China;[4]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[5]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, Shanghai 200237, Peoples R China

年份：2021

卷号：9

期号：1

起止页码：481

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20210209754692);WOS:【SCI-EXPANDED(收录号:WOS:000610827900043)】；

基金：This work is financially supported by the National Natural Science Foundation of China (21777044, 22076046, and 22006038), the Science and Technology Commission of Shanghai Municipality (19ZR1472400 and 19230711300), and the China Postdoctoral Science Foundation (2020M681209).

语种：英文

外文关键词：hydrogen peroxide production; vacancy engineering; Schottky junction; graphitic carbon nitride; MXene quantum dots

摘要：Photocatalytic H2O2 production is an environmentally friendly and sustainable production technique. Here, we fabricate the Ti3C2 quantum dot-modified defective inverse opal g-C3N4 (TC/CN) via a facile electrostatic self-assembly method. The resultant catalysts greatly facilitate the photocatalytic H2O2 production. The optimum H2O2 yield on TC/CN-20 reaches 560.7 mu mol L-1 h(-1), which is 9.3 times higher than that of bulk CN under visible light irradiation. This enhancement is attributed to the direction-induced bonding between carbon vacancies in g-C3N4 and TCQDs. The formation of a Schottky junction in the interface further realizes spatial separation of electron and holes, effectively avoiding the recombination of the charge carriers at defect sites. Therefore, this work not only constructs a high-performance photocatalyst for H2O2 production with outstanding yield and long-term recyclability but also develops a direction-induced bonding synthetic method and explores the functionary mechanism of defect sites in the Schottky junction for photocatalytic H2O2 production.