[1]吳天斌,張鵬,楊冠英,等.介孔SiO2負載和包覆的納米金屬顆粒的制備與研究[J].中國材料進展,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]
點擊復制
介孔SiO2負載和包覆的納米金屬顆粒的制備與研究(
)
中國材料進展[ISSN:1674-3962/CN:61-1473/TG]
- 卷:
-
- 期數:
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2012年第1期
- 頁碼:
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008-12
- 欄目:
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特約研究論文
- 出版日期:
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2012-01-25
文章信息/Info
- Title:
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Preparation and Characterization of Mesoporous Silica Supported and Encapsulated Nano Metal Particles
- 作者:
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吳天斌; 張鵬; 楊冠英; 韓布興
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(中國科學院化學研究所 北京分子科學國家實驗室, 北京 100190)
- Author(s):
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WU Tianbin; ZHANG Peng; YANG Guanying; HAN Buxing
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(Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 , China)
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- 關鍵詞:
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納米金屬; 介孔材料; 包覆; 功能化
- DOI:
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10.7502/j.issn.1674-3962.2012.01.02
- 文獻標志碼:
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A
- 摘要:
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制備了以SiO2為核、介孔SiO2為殼的核-殼顆粒負載納米金屬顆粒以及介孔SiO2殼層包覆SiO2負載的納米金屬顆粒。結果表明,十六烷基三甲基溴化胺(CTAB)作為模板劑,有助于介孔SiO2殼層包覆SiO2核的結構形成,介孔SiO2殼層的孔徑方向垂直于SiO2核的表面;在聚乙烯吡咯烷酮(PVP)的穩定作用下,Pt納米顆粒能均勻地分布在介孔SiO2殼層的表面。單分散SiO2顆粒經過3氨丙基三乙氧基硅烷(APS)功能化后,可負載納米金屬顆粒。進一步研究表明,以SiO2負載納米金屬顆粒為核,NH3·H2O,乙醇和水為分散劑,CTAB為模板劑,正硅酸乙酯(TEOS)為硅源,還能制備介孔SiO2殼包覆SiO2負載的納米金屬顆粒,而且介孔SiO2殼層的厚度可通過TEOS的含量調節。
- Abstract:
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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 SiO2 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