我组朱成在ACS Appl. Energy Mater. 上发表论文

题目：

Carbon-Supported Oxygen Vacancy-Rich Co₃O₄ for RobustPhotocatalytic H2O2 Production via Coupled Water Oxidation and

Oxygen Reduction Reaction

作者：

Cheng Zhu, Mengmeng Zhu, Yue Sun, Yunjie Zhou, Jin Gao, Hui Huang, Yang Liu,*and Zhenhui Kang*

单位：

Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou,215123, Jiangsu, PR China

摘要：

Photocatalytic H₂O₂ production is a promising strategy toalleviate energy crisis, since H₂O₂ is an important liquidus chemical and fuel.However, the following problems severely restrict the development of thistechnique: (1) low selectivity; (2) low stability (normally less than five shorttime cycles); (3) fast charge recombination; (4) assistance of hole scavengers;and (5) demand of O₂ saturation. Herein, carbon-supported oxygen vacancyrich Co₃O₄ nanoplate (C-ovCo) is reported as an efficient photocatalyst forscavenger-free H₂O₂ production by coupled 2e⁻ water oxidation (WOR) and2e⁻ oxygen reduction reaction (ORR) with low energy barrier of 1.1 eV. In thissystem, the oxygen vacancies can reduce the band gap, enhance the donordensity, improve the charge separation and migration, and work as WOR sites,while the carbon support accepts electrons and works as ORR sites. Thephotocatalysts exhibit an optimal H2O2 production rate of 3.78 mmol h⁻¹ g⁻¹under visible light (λ ≥ 420 nm), an apparent quantum efficiency of 16.7% at420 nm, and a solar-to-chemical efficiency of 0.4%. Moreover, the stability of over 720 h (30 long-time cycles) is also superior tothe state-of-the-art photocatalytic systems.

影响因子：

4.473

分区情况：

2区

链接：  

 https://pubs.acs.org/doi/pdf/10.1021/acsaem.9b01712