【摘 要】
：
Visible light induced titanium dioxide (TiO2) pillared montmorillonite clay (MMT)photocatalyst coupling-doped with S and N elements was prepared by the two-step ad-sorption method. The photocatalyst was characterized by X-ray photoelectron spectros-copy (
【机 构】
：
Dept. of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an 71005
论文部分内容阅读
Visible light induced titanium dioxide (TiO2) pillared montmorillonite clay (MMT)photocatalyst coupling-doped with S and N elements was prepared by the two-step ad-sorption method. The photocatalyst was characterized by X-ray photoelectron spectros-copy (XPS) and ultraviolet-visible (UV-vis) absorption spectroscopy. The photocatalysic ef-ficacy of the prepared photocatalyst for degrading gaseous formaldehyde was evaluatedunder visible light irradiation. The degrading rate of gaseous formaldehyde is nearly 85%in 300 min visible light irradiation. The results demonstrate that the much higher visiblelight photocatalytic activity of the photocatalyst is due to the synergistic effects of coupling-doping of S and N elements to TiO2, extensive specific surface area of MMT and quantumsized efficacy between layers of MMT.
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