我组李逸在J. Mater. Chem. A上发表论文

题目：

Interface photo-charge kinetics regulation bycarbon dots for efficient hydrogen peroxideproduction†

作者：

Yi Li, Yajie Zhao, Haodong Nie, Kaiqiang Wei, Jingjing Cao, Hui Huang, *Mingwang Shao, Yang Liu* and Zhenhui Kang *

单位：

 †Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials

(FUNSOM), Soochow University, 199 Ren’ai Road, Suzhou 215123, Jiangsu, People’s Republic of China

 ‡Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 20050, China

§Canadian Light Source, Saskatoon, Saskatchewan S7N2 V3, Canada

摘要：

Hydrogen peroxide (H₂O₂) is a multi-functional chemical for a range of industries, but the present H₂O₂production requires complex processes, and leads to environmental pollution, etc. Solar water-splittingis one of the potential avenues to combine H₂O and O₂ into H₂O₂ through a cheap and clean way. Mostof the photocatalysts involve multiple components and interfaces to improve the catalytic activity andenergy conversion efficiency. However, it is difficult to regulate the photo-charge kinetics between themulti-interface catalyst, which hinders the practical application of photocatalysts. Here, we reportaSnS₂/In₂S₃ type II heterostructure modified by carbon dots (SnS₂/In₂S₃/CDs) to highly improve thestability of sulfides and realize generation of H₂O₂ by the oxygen reduction reaction (ORR). Notably, insitu transient photovoltage measurements (TPV) were carried out to ****yze the charge transfer processamong SnS₂, In₂S₃ and CDs. The optimal SnS₂/In₂S₃/CD composite (n(Sn):n(In) = 50%) displaysa prominent H₂O₂ production rate of 1111.89 mmol h^-1 g^-1 without any sacrificial agent under theconditions of normal pressure and neutral solution (pH = 7). The quantum efficiency (QE) of H₂O₂production was calculated to be 3.9% under light (λ= 535 nm), and the solar energy conversionefficiency (SCC) was up to 1.02%, which is the highest known production of H₂O₂ from sulfides asphotocatalysts. Our work provides a new way to regulate the photo-charge kinetics of the multiinterface catalyst using CDs to achieve the extremely efficient production of H₂O₂ by photocatalyticwater-splitting。

影响因子：

11.301

分区情况：

1区

链接：  

 https://pubs.rsc.org/en/content/articlepdf/2021/ta/d0ta10231h