Sub-10 nm Platinum Nanocrystals with Size and Shape Control: Catalytic Study for Ethylene and Pyrrole Hydrogenation
Tsung, Chia-Kuang1,2,3; Kuhn, John N.1,2,3; Huang, Wenyu1,2,3; Aliaga, Cesar1,2,3; Hung, Ling-I1,2,3,4,5; Somorjai, Gabor A.1,2,3; Yang, Peidong1,2,3
2009
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
ISSN0002-7863
Volume131Issue:16Pages:5816-5822
DOI10.1021/ja809936n
Other AbstractPlatinum nanocubes and nanopolyhedra with tunable size from 5 to 9 nm were synthesized by controlling the reducing rate of metal precursor ions in a one-pot polyol synthesis. A two-stage process is proposed for the simultaneous control of size and shape. In the first stage, the oxidation state of the metal ion precursors determined the nucleation rate and consequently the number of nuclei. The reaction temperature controlled the shape in the second stage by regulation of the growth kinetics. These well-defined nanocrystals were loaded into MCF-17 mesoporous silica for examination of catalytic properties. Pt loadings and dispersions of the supported catalysts were determined by elemental analysis (ICP-MS) and H(2) chemisorption isotherms, respectively. Ethylene hydrogenation rates over the Pt nanocrystals were independent of both size and shape and comparable to Pt single crystals. For pyrrole hydrogenation, the nanocubes enhanced ring-opening ability and thus showed a higher selectivity to n-butylamine as compared to nanopolyhedra.
Subject AreaCHEMISTRY, MULTIDISCIPLINARY
Indexed BySCI
Language英语
WOS IDWOS:000265460200030
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:369[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1292
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, Berkeley, CA 94720 USA
3.Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA
4.Ind Technol Res Inst, Mat Lab, Hsinchu 310, Taiwan
5.Ind Technol Res Inst, Chem Lab, Hsinchu 310, Taiwan
Recommended Citation
GB/T 7714
Tsung, Chia-Kuang,Kuhn, John N.,Huang, Wenyu,et al. Sub-10 nm Platinum Nanocrystals with Size and Shape Control: Catalytic Study for Ethylene and Pyrrole Hydrogenation[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2009,131(16):5816-5822.
APA Tsung, Chia-Kuang.,Kuhn, John N..,Huang, Wenyu.,Aliaga, Cesar.,Hung, Ling-I.,...&Yang, Peidong.(2009).Sub-10 nm Platinum Nanocrystals with Size and Shape Control: Catalytic Study for Ethylene and Pyrrole Hydrogenation.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,131(16),5816-5822.
MLA Tsung, Chia-Kuang,et al."Sub-10 nm Platinum Nanocrystals with Size and Shape Control: Catalytic Study for Ethylene and Pyrrole Hydrogenation".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 131.16(2009):5816-5822.
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