期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 80, 期 1, 页码 38-49出版社
SPRINGER
DOI: 10.1007/s10971-016-4062-8
关键词
TiO2; neodymium; Graphene oxide; Photodegradation; Nanomaterials; Indigo carmine; sol-gel
资金
- Faculty of science, University of Johannesburg, South Africa
- National Research Fund of South Africa, Centre for Nanoscience and Research [TTK14052167682]
- Global Excellence and Stature fellowship from the University of Johannesburg
A series of neodymium-doped titanium dioxide (Nd-TiO2) decorated on graphene oxide (GO) were synthesized by sol-gel method. The structures, morphologies and optical properties of the nanocomposites (Nd-TiO2-GO) were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy and ultraviolet-visible spectroscopy. The photocatalytic study of Nd-TiO2-GO nanocomposites was evaluated via the degradation of indigo carmine under simulated solar light. Results demonstrated that the photodegradation efficiency of indigo carmine solutions irradiated by solar simulated light for 3 h with the nanocomposites used as a catalyst reached a level of 92 % (0.6 % Nd). This high photocatalytic degradation of indigo carmine solutions by the Nd-TiO2-GO nanocomposites is ascribed to the spherical nanocrystalline size of TiO2.
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