[1]吴天斌,张鹏,杨冠英,等.介孔SiO2负载和包覆的纳米金属颗粒的制备与研究[J].中国材料进展,2012,(1):008-12.[doi:10.7502/j.issn.1674-3962.2012.01.02]
 WU Tianbin,ZHANG Peng,YANG Guanying,et al. Preparation and Characterization of Mesoporous Silica Supported and Encapsulated Nano Metal Particles[J].MATERIALS CHINA,2012,(1):008-12.[doi:10.7502/j.issn.1674-3962.2012.01.02]
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介孔SiO2负载和包覆的纳米金属颗粒的制备与研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2012年第1期
页码:
008-12
栏目:
特约研究论文
出版日期:
2012-01-25

文章信息/Info

Title:
 Preparation and Characterization of Mesoporous Silica Supported and Encapsulated Nano Metal Particles
作者:
吴天斌张鹏杨冠英韩布兴
 (中国科学院化学研究所 北京分子科学国家实验室, 北京 100190)
Author(s):
 WU Tianbin ZHANG Peng YANG Guanying HAN Buxing
(Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 , China)
关键词:
纳米金属介孔材料包覆功能化
DOI:
10.7502/j.issn.1674-3962.2012.01.02
文献标志码:
A
摘要:
 制备了以SiO2为核、介孔SiO2为壳的核-壳颗粒负载纳米金属颗粒以及介孔SiO2壳层包覆SiO2负载的纳米金属颗粒。结果表明,十六烷基三甲基溴化胺(CTAB)作为模板剂,有助于介孔SiO2壳层包覆SiO2核的结构形成,介孔SiO2壳层的孔径方向垂直于SiO2核的表面;在聚乙烯吡咯烷酮(PVP)的稳定作用下,Pt纳米颗粒能均匀地分布在介孔SiO2壳层的表面。单分散SiO2颗粒经过3氨丙基三乙氧基硅烷(APS)功能化后,可负载纳米金属颗粒。进一步研究表明,以SiO2负载纳米金属颗粒为核,NH3·H2O,乙醇和水为分散剂,CTAB为模板剂,正硅酸乙酯(TEOS)为硅源,还能制备介孔SiO2壳包覆SiO2负载的纳米金属颗粒,而且介孔SiO2壳层的厚度可通过TEOS的含量调节。
Abstract:
Metal nanoparticles supported on the core shell particles with SiO2 as core and mesoporous SiO2 as shell and mesoporous SiO2 encapsulated metal nano particles supported on SiO2 particles were prepared in this work. The results showed that SiO2 particles as cores could be coated by mesoporous SiO2 shell with aid of CTAB template and the direction of mesoporous channels was perpendicular to the surface of SiO2  core.
更新日期/Last Update: 2012-02-09