Enhanced Photocatalytic Activity of H-C-TiO₂/Graphene Based on the Synergistic Effect between Surface Defects and Ti-C Bond

Abstract:

The hydrothermal-prepared carbon-doped titanium dioxide/graphene nanocomposite material possessed excellent photocatalytic property after annealling in hydrogen (H-C-TiO₂/G). The photocatalytic activity toward decomposing gaseous formaldehyde for H-C-TiO₂/G is better than that of C-TiO₂ and H-C-TiO₂. The microstructure of as-prepared samples was investigated by TEM, Raman spectra and XPS spectra. It is believed that the enhancement of photocatalytic activity is mainly ascribed to the synergistic effect between surface defects and Ti-C bond.

• Periodical: Applied Mechanics and Materials (Volume 525)
• Pages: 23-30
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.525.23
• Online since: February 2014
• Authors: Lei Zeng, Ming Hui Li, Wu Lin Song*
• Keywords: Graphene, Surface Defect, Synergistic Effect, Ti-C Bond, TiO₂

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