4.6 Article

In situ synthesis of hierarchical In2S3-graphene nanocomposite photocatalyst for selective oxidation

Journal

RSC ADVANCES
Volume 4, Issue 110, Pages 64484-64493

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra13764g

Keywords

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Funding

  1. National Natural Science Foundation of China (NSFC) [20903023, 21173045]
  2. Award Program for Minjiang Scholar Professorship
  3. Natural Science Foundation (NSF) of Fujian Province for Distinguished Young Investigator Grant [2012J06003]
  4. Program for Returned High-Level Overseas Chinese Scholars of Fujian province

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We report a simple, in situ hydrothermal way to fabricate In2S3-graphene (GR) nanocomposites in which hierarchical In2S3 petals spread over the surface of GR sheets in virtue of the structure directing role of graphene oxide (GO) as the precursor of GR in a solution phase. With the addition of an appropriate amount of GO, the hierarchical petal-like In2S3 structures have been successfully grown on the two-dimensional (2D) GR mat. The as-synthesized In2S3-GR nanocomposites featuring good interfacial contact exhibit much higher photocatalytic activity toward selective oxidation of alcohols under visible light irradiation than blank In2S3. A series of characterization results disclose that the significantly enhanced photocatalytic performance of In2S3-GR nanocomposites can be ascribed to the integrative effect of the increased separation and transfer efficiency of photogenerated electron-hole pairs and the larger surface area. This work highlights the wide scope of fabricating GR-based semiconductor nanocomposites with specific architectural morphology by rationally utilizing the structure directing property of GO and extending their applications toward photocatalytic selective transformations.

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