期刊
ACS CATALYSIS
卷 4, 期 1, 页码 328-336出版社
AMER CHEMICAL SOC
DOI: 10.1021/cs400913h
关键词
carbon quantum dots; composites; cyclohexane oxidation; photocatalysis; selective oxidation
资金
- National Basic Research Program of China (973 Program) [2012CB825800, 2013CB932702]
- National Natural Science Foundation of China [51132006, 21073127, 21071104]
- Specialized Research Fund for the Doctoral Program of Higher Education [20123201110018]
- Suzhou Planning Project of Science and Technology [ZXG2012028]
- Foundation for the Author of National Excelent Doctoral Dissertation of China [200929]
- Priority Academic Program Development of Jiansu Higher Education Institutions
High-efficiency and high-selectivity catalytic oxidation of alkanes under mild conditions is a major objective of current catalysis chemistry and chemical production. Despite extensive development efforts on new catalysts for cyclohexane oxidation, current commercial processes still suffer from low conversion, poor selectivity, and excessive production of waste. We demonstrate the design and synthesis of composites made from metal nanoparticles and carbon quantum dots (CQDs) for high-efficiency and high-selectivity photocatalyst systems for the green oxidation of cyclohexane. Remarkably, the present Au nanoparticles/CQDs composite photocatalyst yields 63.8% conversion efficiency and 99.9% selectivity for the green oxidation of cyclohexane to cyclohexanone, using H2O2 under visible light at room temperature. Given its diversity and versatility of structural and composition design, metal nanoparticles/CQDs composites may provide a powerful pathway for the development of high-performance catalysts and production processes for green chemical industry.
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