• 文献标题:   Preparation of graphene-TiO2 nanocomposite films and its photocatalytic performances on degradation of Rhodamine B
  • 文献类型:   Article
  • 作  者:   QIN P, YI GB, ZU XH, WANG H, LUO HS, TAN M
  • 作者关键词:   graphene, photocatalysi, tio2, rhodamin b, ultraviolet
  • 出版物名称:   PIGMENT RESIN TECHNOLOGY
  • ISSN:   0369-9420 EI 1758-6941
  • 通讯作者地址:   Guangdong Univ Technol
  • 被引频次:   0
  • DOI:   10.1108/PRT-02-2017-0019
  • 出版年:   2018

▎ 摘  要

Purpose - The aim of this paper is to synthesize graphene-modified titanium dioxide (GR-TiO2) nanorod arrays nanocomposite films, so that these can enhance the photocatalytic properties of titanium dioxide and overcome the problem of difficult separation and recovery of photocatalysts. Design/methodology/approach - The GR-TiO2 nanocomposite films were synthesized via hydrothermal method and spin-coating. The obtained samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), ultraviolet-visible (UV-Vis) diffuse reflectance spectrum and Raman spectrum. The photocatalytic performance of the GR-TiO2 nanocomposite films for degrading Rhodamin B under ultraviolet (UV) was studied by a UV-Vis spectrophotometer. The photocatalytic enhancement mechanism of graphene was studied by photoelectrochemical analysis. Findings - The introduction of graphene expanded the range of the optical response of TiO2 nanorod arrays, improving the separation efficiency of the photogenerated electron-hole pairs, and thus dramatically increasing its photocatalytic performance. Research limitations/implications - A simple and novel way for synthesizing GR-TiO2 nanocomposite films has enhanced the photocatalytic performance of TiO2. Originality/value - The photocatalyst synthesized is easy to separate and recycle in the process of photocatalytic reaction, so it is possible to achieve industrialization.