Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions
Joo, Sang Hoon1,2,3; Park, Jeong Young1,2,3; Tsung, Chia-Kuang1,2,3; Yamada, Yusuke1,2,3; Yang, Peidong1,2,3; Somorjai, Gabor A.1,2,3
2009
Source PublicationNATURE MATERIALS
ISSN1476-1122
Volume8Issue:2Pages:126-131
DOI10.1038/NMAT2329
Other AbstractRecent advances in colloidal synthesis enabled the precise control of the size, shape and composition of catalytic metal nanoparticles, enabling their use as model catalysts for systematic investigations of the atomic-scale properties affecting catalytic activity and selectivity. The organic capping agents stabilizing colloidal nanoparticles, however, often limit their application in high-temperature catalytic reactions. Here, we report the design of a high-temperature-stable model catalytic system that consists of a Pt metal core coated with a mesoporous silica shell (Pt@mSiO(2)). Inorganic silica shells encaged the Pt cores up to 750 degrees C in air and the mesopores providing direct access to the Pt core made the Pt@mSiO(2) nanoparticles as catalytically active as bare Pt metal for ethylene hydrogenation and CO oxidation. The high thermal stability of Pt@mSiO(2) nanoparticles enabled high-temperature CO oxidation studies, including ignition behaviour, which was not possible for bare Pt nanoparticles because of their deformation or aggregation. The results suggest that the Pt@mSiO(2) nanoparticles are excellent nanocatalytic systems for high-temperature catalytic reactions or surface chemical processes, and the design concept used in the Pt@mSiO(2) core-shell catalyst can be extended to other metal/metal oxide compositions.
Subject AreaPHYSICS, CONDENSED MATTER
Indexed BySCI
Language英语
WOS IDWOS:000263090600013
PublisherNATURE PUBLISHING GROUP
Citation statistics
Cited Times:991[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1295
Collection个人在本单位外知识产出
Affiliation1.Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
2.Univ Calif Berkeley, Lawrence Berkeley Lab, Div Chem Sci, Berkeley, CA 94720 USA
3.Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
Recommended Citation
GB/T 7714
Joo, Sang Hoon,Park, Jeong Young,Tsung, Chia-Kuang,et al. Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions[J]. NATURE MATERIALS,2009,8(2):126-131.
APA Joo, Sang Hoon,Park, Jeong Young,Tsung, Chia-Kuang,Yamada, Yusuke,Yang, Peidong,&Somorjai, Gabor A..(2009).Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions.NATURE MATERIALS,8(2),126-131.
MLA Joo, Sang Hoon,et al."Thermally stable Pt/mesoporous silica core-shell nanocatalysts for high-temperature reactions".NATURE MATERIALS 8.2(2009):126-131.
Files in This Item:
File Name/Size DocType Version Access License
1295.pdf(1116KB)期刊论文出版稿限制开放CC BY-NC-SAView Application Full Text
Related Services
Usage statistics
Scholar Google
Similar articles in Scholar Google
[Joo, Sang Hoon]'s Articles
[Park, Jeong Young]'s Articles
[Tsung, Chia-Kuang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Joo, Sang Hoon]'s Articles
[Park, Jeong Young]'s Articles
[Tsung, Chia-Kuang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Joo, Sang Hoon]'s Articles
[Park, Jeong Young]'s Articles
[Tsung, Chia-Kuang]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 1295.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.