我组王嘉璇在Journal of Materials Chemistry A上发表论文

题目：

A carbon dot-based metal-free photocatalyst enables O₂to serve as both a reactant and electron sink for enhancing H₂O₂photoproduction

作者：

Jiaxuan Wang,[a] Yan Liu,[a] Yidong Han,[a] Kaili Bao,[a] Tiwei He,[a] Hui Huang,[a] Yang Liu,[a] * and Zhenhui Kang *ab

单位：

[a] Institute of Functional Nano and Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices Soochow University Suzhou 215123, China

[b] Macao Institute of Materials Science and Engineering (MIMSE)

MUST-SUDA Joint Research Center for Advanced Functional Materials, Macau University of Science and Technology, Taipa, Macao 999078, China

摘要：

Photocatalytic oxygen reduction via the two-electron route is the cleanest and greenest method for the production of hydrogen peroxide (H₂O₂). However, in most catalytic systems, the function of oxygen is simply to participate in the reaction as a reactant. Herein, a metal-free catalyst (DEX-160, derived from the hydrothermal treatment of dextran at 160 ℃) expanded the role of oxygen, showing high performance in H₂O₂photoproduction with a yield of up to 2667 mmol g^-1h^-1. Carbon dots generated on the surface of DEX-160 promote the separation and transfer of photo-induced charges. The in situ transient photo-induced voltage and photoelectrochemistry tests show that O₂served as both

a reactant and an electron sink to enhance the H₂O₂photoproduction in the photocatalytic process of DEX-160. This study provides new insight for understanding the role of oxygen and the carbon dotassisted metal-free photocatalyst for H₂O₂evolution.

影响因子：

11.9

分区情况：

2区

链接：

https://pubs.rsc.org/en/content/articlelanding/2022/ta/d2ta03865j