A general synthesis approach for supported bimetallic nanoparticles via surface inorganometallic chemistry

被引：197

作者：

Ding, Kunlun ^{[1
]}

Cullen, David A. ^{[2
]}

Zhang, Laibao ^{[1
]}

Cao, Zhi ^{[3
,4
]}

Roy, Amitava D. ^{[5
]}

Ivanov, Ilia N. ^{[6
]}

Cao, Dongmei ^{[7
]}

机构：

[1] Louisiana State Univ, Dept Chem Engn, Baton Rouge, LA 70803 USA

[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[3] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

[4] Synfuels China Co Ltd, Beijing 100195, Peoples R China

[5] Louisiana State Univ, Ctr Adv Microstruct & Devices, Baton Rouge, LA 70806 USA

[6] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[7] Louisiana State Univ, Shared Instrumentat Facil, Baton Rouge, LA 70803 USA

来源：

SCIENCE | 2018年 / 362卷 / 6414期

关键词：

DOUBLE COMPLEX SALT; OXYGEN REDUCTION; SELECTIVE HYDROGENATION; ALLOY NANOPARTICLES; CATALYSTS; SILICA; METALS; PD; IDENTIFICATION; DECOMPOSITION;

D O I：

10.1126/science.aau4414

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The synthesis of ultrasmall supported bimetallic nanoparticles (between 1 and 3 nanometers in diameter) with well-defined stoichiometry and intimacy between constituent metals remains a substantial challenge. We synthesized 10 different supported bimetallic nanoparticles via surface inorganometallic chemistry by decomposing and reducing surface-adsorbed heterometallic double complex salts, which are readily obtained upon sequential adsorption of target cations and anions on a silica substrate. For example, adsorption of tetraamminepalladium(II) [Pd(NH3)(4)(2+)] followed by adsorption of tetrachloroplatinate [PtCl42-] was used to form palladium-platinum (Pd-Pt) nanoparticles. These supported bimetallic nanoparticles show enhanced catalytic performance in acetylene selective hydrogenation, which clearly demonstrates a synergistic effect between constituent metals.

引用

页码：560 / +

页数：61

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