NDLI: Transforming CdS into an efficient visible light photocatalyst for selective oxidation of saturated primary C

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Transforming CdS into an efficient visible light photocatalyst for selective oxidation of saturated primary C–H bonds under ambient conditions

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Transforming CdS into an efficient visible light photocatalyst for selective oxidation of saturated primary C–H bonds under ambient conditions

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Nan Zhang, Yanhui Xu, Yi-Jun Tang, Zi-Rong
Copyright Year	2012
Abstract	Selective activation of saturated sp3 C–H bonds to high-value-added chemicals remains a significant but challenging task for the sustainable exploitation of available feedstocks. However, the selective oxidation of C–H bonds with environmentally benign oxygen is often very difficult to control. Research works available in thermal heterogeneous catalysis often involve the use of transition metal particles together with harsh reaction conditions, e.g., high temperature and high pressure, which results in the difficulty in controlling the selectivity. Here, we report a very simple room temperature method to prepare a cubic phase, sheet structured semiconductor CdS sample. The as-prepared CdS is able to be used as a visible-light-driven photocatalyst for the selective oxidation of saturated primary C–H bonds in alkyl aromatics with high activity and selectivity using molecular oxygen as a benign oxidant and benzotrifluoride as the solvent under ambient conditions, i.e., room temperature and atmospheric pressure. The superior photocatalytic performance of CdS can be attributed to its unique assembly of sheet structure with cubic phase, high surface area and efficient separation of photogenerated charge carriers. The possible reaction mechanism for the photocatalytic selective oxidation of such C–H bonds over the CdS semiconductor has also been proposed.
Starting Page	2812
Ending Page	2822
Page Count	11
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	3
Issue Number	9
Journal	Chemical Science
DOI	10.1039/c2sc20603j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Heterogeneous catalysis Oxygen Semiconductor Atmospheric pressure Photocatalysis Alkane Reaction mechanism Transition metal Solvent Trifluorotoluene
Content Type	Text
Resource Type	Article
Subject	Chemistry

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