Efficient photocatalytic water splitting throughtitanium silicalite stabilized CoO nanodots

题目：

Efficient photocatalytic water splitting throughtitanium silicalite stabilized CoO nanodots

作者：

Mengmeng Zhu,‡^a Cheng Zhu, ‡^a Dan Wu,^a Xiao Wang,^a Huibo Wang,^a Jin Gao,^aHui Huang, *^a Chunfeng Shi,*^b Yang Liu*^a and Zhenhui Kang *^a

单位：

^aInstitute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu KeyLaboratory for Carbon-Based Functional Materials & Devices, Soochow University,199 Ren’ai Road, Suzhou, 215123 Jiangsu, PR China.

^bState Key Laboratory of Catalytic Materials and Reaction Engineering, ResearchInstitute of Petroleum Processing, SINOPEC, No. 18 Xueyuan Road, Beijing 100083,China.

摘要：

Water can be split into hydrogen (H₂) and hydrogen peroxide (H₂O₂) in an environment-friendly mannerthrough photocatalysis by CoO, which is a promising strategy to alleviate the energy crisis. However, thestability of CoO remains a great challenge because of the oxidation effect of the product H₂O₂. Herein,titanium silicalite-1 (TS-1) was employed as a framework to obtain and anchor monodisperse CoO nanodots, improve CoO photocatalytic performance, and efficiently separate the oxidizing species from CoOby adsorbing the resulting H₂O₂. As a result, TS-1 prevented CoO from aggregation, surface oxidation,and rapid inactivation. CoO-TS-1 showed H₂ and H₂O₂ production rates of 1460 μmol h⁻¹ g_CoO⁻¹ and1390 μmol h⁻¹ g_CoO⁻¹, respectively, with a high photostability for about 168 h. In addition, the efficientlyharvested H₂O₂ was directly used in the oxidation of cyclohexane to cyclohexanol and cyclohexanonewith a selectivity of up to 89.48%. This work paves a new way for the design of an efficient and stablephotocatalyst as well as product utilization.

影响因子：

6.97

分区情况：

1区

链接：  

https://pubs.rsc.org/en/content/articlehtml/2019/nr/c9nr05057d