| 纳米Au团簇在氧化钛修饰的介孔分子筛MCM-41中的组装 |
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| 引用本文： | 郑珊,高濂,郭景坤.纳米Au团簇在氧化钛修饰的介孔分子筛MCM-41中的组装[J].无机材料学报,2002,17(2):332-336. |
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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： | 以钛酸丁酯为TiO2前驱体，使TiO2均匀分散于纯硅介孔分子筛MCM－41的介孔孔道仙表面，利用TiO2光学性质将AuCl4^-还原为Au(0)并组装于氧化钛修饰的MCM－41孔道中，对所合成的Au负载的氧化钛修饰的MCM－41进行了XRD，XPS，N2吸附－脱附曲线，及固体UV-Vis漫反射等多种结构表征。由XPS谱和固体UV－Vis漫反射吸收光谱的plasmon吸收峰证明Au团簇呈现0价的金属状态。
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| 关 键 词： | 氧化钛修饰 介孔分子筛 MCM－41 组装 Au团簇 |
| 文章编号： | 1000-324X(2002)02-0332-05 |
| 收稿时间： | 2001-3-16 |
| 修稿时间： | 2001年3月16日 |
Synthesis and Structure Characterization of Nanosized Au Clusters on Titania-Modified Mesoporous MCM-41 |
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| ZHENG Shan,GAO Lian,GUO Jing-Kun.Synthesis and Structure Characterization of Nanosized Au Clusters on Titania-Modified Mesoporous MCM-41[J].Journal of Inorganic Materials,2002,17(2):332-336. |
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| Authors: | ZHENG Shan GAO Lian GUO Jing-Kun |
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| Affiliation: | StateKeyLabofHighPerformanceCeramicsandSuperfineMicrostructure;ShanghaiInstituteofCeramics;ChineseAcademyofSciences;Shanghai200050;China |
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| Abstract: | Titania modified mesoporous slilcate MCM-41 (MCM-TiO2) was synthesized by precursor tetrabutyltitanate and calcined MCM-41. Au clusters deposited on the inner surface of titania-modified MCM-41 by the photodeposition method through AuCl-4 and MCM-TiO2 reaction. The structure and optical properties of the as-synthesized samples were investigated by XRD, XPS, N2 adsorption/ desorption isotherms and diffuse reflectance UV-Vis absorbance spectroscopy. The decrease of BET surface areas and the pore volume proved that nanosized Au clusters deposited in the mesopore of MCM-TiO2. The Au 4f of XPS and the plasmon absorption in UV-Vis spectrum showed that the deposited Au was in metal state. |
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| Keywords: | Au clusters: titania-modified MCM-41 Au deposited titania-modified MCM-41 |
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