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摘要:
Nitrogen and sulfur co-doped mesoporous TiO2 thin films were fabricated using thiourea as a doping resource by the combination of the sol-gel and evaporation-induced self-assembly (EISA) processes. Scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), N-2 adsorption-desorption, and UV-vis spectra were performed to characterize the as-synthesized mesoporous TiO2 materials. The XPS result shows that O-Ti-N and O-Ti-S bonds in the (S, N)-codoped mesoporous TiO2 were formed. The resultant mesoporous (S, N)-codoped TiO2 exhibited anatase framework with a high porosity and a narrow pore distribution. After being illuminated for 3 h, methyl orange (MO) could be degraded completely by the co-doped sample under the ultraviolet irradiation, whereas mesoporous TiO2 film without doping could only degrade 60% MO. After being illuminated by visible light, the water contact angles of the mesoporous co-doped TiO2 samples decreased slightly, but the pure TiO2 mesoporous film exhibited no change in the hydrophilicity.
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来源 :
RESEARCH ON CHEMICAL INTERMEDIATES
ISSN: 0922-6168
年份: 2010
期: 1
卷: 36
页码: 27-37
3 . 3 0 0
JCR@2022
ESI学科: CHEMISTRY;
JCR分区:3
中科院分区:4