| 金属Pt团簇在氧化钛修饰MCM-41中的组装 |
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| 引用本文： | 郑珊,高濂,郭景坤.金属Pt团簇在氧化钛修饰MCM-41中的组装[J].无机材料学报,2001,16(6):1235-1238. |
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| 作者姓名： | 郑珊 高濂 郭景坤 |
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| 作者单位： | 中国科学院上海硅酸盐研究所高性能结构陶瓷与超微结构国家重点实验室 上海 200050 |
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| 摘 要： | 采用光沉积的合成方法将纳米金属Ｐｔ组装于氧化钛修饰ＭＣＭ－４１孔道中，并对合成的样品进行了ＸＲＤ、ＸＰＳ、ＵＶ－vis、Ｎ2吸附－脱附等结构表征．光电子能谱表明组装的Ｐｔ呈金属状态；Ｎ２吸附－脱附数据表明组装于孔道中的Ｐｔ虽然使ＭＣＭ－４１的ＢＥＴ比表面和孔容下降，但是由于Ｐｔ的组装量较小，使其对孔径分布的影响较小．由于Ｐｔ的引入，使其紫外－可见光漫反射吸收光谱与氧化钛修饰的ＭＣＭ－４１不同．
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| 关 键 词： | MCM-41 氧化钛修饰的 MCM-TiO2/Pt 光沉积法 |
| 文章编号： | 1000-324(2001)06-1235-04 |
| 收稿时间： | 2000-12-14 |
| 修稿时间： | 2000年12月14 |
Preparation and Structure Characterization of Pt Clusters on Titania Modified MCM-41 |
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| ZHENG Shan,GAO Lian,GUO Jing-Kun.Preparation and Structure Characterization of Pt Clusters on Titania Modified MCM-41[J].Journal of Inorganic Materials,2001,16(6):1235-1238. |
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| Authors: | ZHENG Shan GAO Lian GUO Jing-Kun |
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| Affiliation: | State Key Lab of High Performance Ceramics and Superfine Microstructure; Shanghai Institute of Ce- ramics; Chinese Academy of Sciences; Shanghai 200050; China |
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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. |
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| Keywords: | MCM-4l titania modified MCM-41 MCM-TiO2/Pt photodeposition |
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