Graphene Coating of TiO2 Nanoparticles Loaded on Mesoporous Silica for Enhancement of Photocatalytic Activity
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- 作者：Takashi Kamegawa ; Daiki Yamahana ; Hiromi Yamashita
- 刊名：Journal of Physical Chemistry C
- 出版年：2010
- 出版时间：September 9, 2010
- 年：2010
- 卷：114
- 期：35
- 页码：15049-15053
- 全文大小：259K
- 年卷期：v.114,no.35(September 9, 2010)
- ISSN：1932-7455
文摘
TiO2 nanoparticles supported on a mesoporous silica surface (TiO2/MCM-41) were selectively coated with graphene through the formation of surface complexes between TiO2 nanoparticles and 2,3-dihydroxynaphthalene and following carbonization under N2 flow. The pore structure as well as the high surface area of MCM-41 was retained even after carbonization at 1073 K. The selective graphene coating led to the enhancement of photocatalytic activities of TiO2/MCM-41 for the decomposition of 2-propanol in water compared with unmodified samples due to the appropriate adsorption properties of organics to transfer to the surface of TiO2 nanoparticles.