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Preparation and photocatalytic activity of silver and TiO2 nanoparticles/montmorillonite composites
AbstractAg–TiO2/montmorillonite (Ag–TiO2/MMT) was synthesized as photocatalyst using TiCl4 hydrolysis to introduce nanosized TiO2 into the interlayer space of the montmorillonite (MMT). Stable pillared TiO2/MMT was obtained by calcination at 500 °C, then silver was loaded by reduction of silver nitrate. The physico–chemical properties of the photocatalyst were determined by X-ray diffraction (XRD), infrared spectroscopy (IR), atomic absorption spectrophotometer (AAS), nitrogen gas adsorption (BET method) and UV–Visible spectra. The photooxidation activity for methylene blue (M.B.) degradation was as follows: Ag–TiO2/MMT>TiO2/MMT>TiO2(P25). Among them Ag–TiO2/MMT had the highest photooxidation activity because of its larger specific surface caused by pillaring and loading of silver for improving its light absorption.
Preparation and photocatalytic activity of silver and TiO2 nanoparticles/montmorillonite composites
AbstractAg–TiO2/montmorillonite (Ag–TiO2/MMT) was synthesized as photocatalyst using TiCl4 hydrolysis to introduce nanosized TiO2 into the interlayer space of the montmorillonite (MMT). Stable pillared TiO2/MMT was obtained by calcination at 500 °C, then silver was loaded by reduction of silver nitrate. The physico–chemical properties of the photocatalyst were determined by X-ray diffraction (XRD), infrared spectroscopy (IR), atomic absorption spectrophotometer (AAS), nitrogen gas adsorption (BET method) and UV–Visible spectra. The photooxidation activity for methylene blue (M.B.) degradation was as follows: Ag–TiO2/MMT>TiO2/MMT>TiO2(P25). Among them Ag–TiO2/MMT had the highest photooxidation activity because of its larger specific surface caused by pillaring and loading of silver for improving its light absorption.
Preparation and photocatalytic activity of silver and TiO2 nanoparticles/montmorillonite composites
Liu, Jianjun (author) / Li, Xinping (author) / Zuo, Shengli (author) / Yu, Yingchun (author)
Applied Clay Science ; 37 ; 275-280
2007-01-18
6 pages
Article (Journal)
Electronic Resource
English
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