Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7722487 | International Journal of Hydrogen Energy | 2013 | 8 Pages |
Abstract
A facile and green one-step method was used to prepare titanate nanotube/graphene (TNT/GR) photocatalysts via an alkaline hydrothermal process. The as-prepared samples were characterized by X-ray diffraction, transmission electron microscopy, Raman spectroscopy, ultraviolet-visible diffuse reflectance spectroscopy and photoluminescence emission spectroscopy. The photocatalytic performance was evaluated by H2 generation from water splitting under Xe-lamp illumination. A significantly enhanced photocatalytic activity for H2 evolution (12.1 μmol/h) was obtained over the compostion-optimized TNT/GR composite (with 1.0 wt% GR), two times higher than that of pure TNT (4.0 μmol/h). During hydrothermal reaction, the reduction of graphene oxide (GO) into GR without using any reducing agents and the formation of 1-D TNT were achieved simultaneously, which resulted in the direct growth of well-defined TNTs uniformly distributed on GR substrates.
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Authors
Haifeng Dang, Xinfa Dong, Yingchao Dong, Jiasheng Huang,