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无机材料学报 2001
Preparation and Structure Characterization of Pt Clusters on Titania Modified MCM-41
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Abstract:
Pt clusters deposited on titania-modified MCM-41 were synthesized by a photodeposition method through PtCl62- and titania-modified MCM-41. The structure and optical properties of the samples were investigated by XRD, XPS, N2 adsorption/desorption isotherms and diffuse reflectance UV-Vis absorption spectroscopy. The results of XPS showed that the deposited Pt was in metal state. Although the BET surface areas and pore volume decreased because of the introduction of Pt, the pore diameter distribution was almost not affected. The curve of Pt deposited titania modified MCM-41 in UV-Vis absorption spectrum was different from that of titania modified MCM-41.
