期刊
NANOSCALE
卷 11, 期 34, 页码 15984-15990出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9nr05057d
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资金
- National MCF Energy RD Program [2018YFE0306105]
- National Natural Science Foundation of China [51725204, 51572179, 21771132, 21471106]
- Natural Science Foundation of Jiangsu Province [BK20161216]
- Collaborative Innovation Center of Suzhou Nano Science Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- 111 Project
Water can be split into hydrogen (H-2) and hydrogen peroxide (H2O2) in an environment-friendly manner through photocatalysis by CoO, which is a promising strategy to alleviate the energy crisis. However, the stability 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 CoO by adsorbing the resulting H2O2. As a result, TS-1 prevented CoO from aggregation, surface oxidation, and rapid inactivation. CoO-TS-1 showed H-2 and H2O2 production rates of 1460 mu mol h(-1) g(CoO)(-1) and 1390 mu mol h(-1) g(CoO)(-1), respectively, with a high photostability for about 168 h. In addition, the efficiently harvested H2O2 was directly used in the oxidation of cyclohexane to cyclohexanol and cyclohexanone with a selectivity of up to 89.48%. This work paves a new way for the design of an efficient and stable photocatalyst as well as product utilization.
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