Kinetically Controlled Growth of Polyhedral Bimetallic Alloy Nanocrystals Exclusively Bound by High-Index Facets: AuPd Hexoctahedra

被引：53

作者：

Lee, Young Wook ^{[1
,2
]}

Kim, Dongheun ^{[3
]}

Hong, Jong Wook ^{[1
,2
]}

Kang, Shin Wook ^{[1
,2
]}

Lee, Sang Bok ^{[3
,4
]}

Han, Sang Woo ^{[1
,2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, KI NanoCentury, Taejon 305701, South Korea

[3] Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol WCU, Taejon 305701, South Korea

[4] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

SMALL | 2013年 / 9卷 / 05期

基金：

新加坡国家研究基金会;

关键词：

gold; hexaoctahedral nanocrystals; high-index facets; palladium; catalysts; RAMAN-SCATTERING PROPERTIES; TRISOCTAHEDRAL GOLD NANOCRYSTALS; CORE-SHELL NANOCRYSTALS; ELECTROCATALYTIC ACTIVITY; PLATINUM NANOCRYSTALS; CATALYTIC-ACTIVITY; CONCAVE NANOCUBES; SHAPE EVOLUTION; NANOPARTICLES; SURFACES;

D O I：

10.1002/smll.201201813

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Au-Pd alloy nanocrystals (NCs) with a hexoctahedral structure, enclosed exclusively by high-index {541} facets, are prepared via the simultaneous reduction of Au and Pd precursors without added seeds or additional metal ions as structure-regulating agents. Manipulating the NC growth kinetics via control of the relative amount of reductant is the key synthetic lever for controlling the morphology of the Au-Pd NCs. The hexoctahedral Au-Pd NCs exhibit higher catalytic performance toward the electro-oxidation of ethanol than low-index-faceted Au-Pd NCs. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：660 / 665

页数：6

共 44 条

[1] The Solvent Matters: Kinetic versus Thermodynamic Shape Control in the Polyol Synthesis of Rhodium Nanoparticles [J].

Biacchi, Adam J. ;

Schaak, Raymond E. .

ACS NANO, 2011, 5 (10) :8089-8099

[2] Palladium-Based Electrocatalysts for Alcohol Oxidation in Half Cells and in Direct Alcohol Fuel Cells [J].

Bianchini, Claudio ;

Shen, Pei Kang .

CHEMICAL REVIEWS, 2009, 109 (09) :4183-4206

[3] Chemistry and properties of nanocrystals of different shapes [J].

Burda, C ;

Chen, XB ;

Narayanan, R ;

El-Sayed, MA .

CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102

[4] Alloy tetrahexahedral Pd-Pt catalysts: enhancing significantly the catalytic activity by synergy effect of high-index facets and electronic structure [J].

Deng, Yu-Jia ;

Tian, Na ;

Zhou, Zhi-You ;

Huang, Rui ;

Liu, Zi-Li ;

Xiao, Jing ;

Sun, Shi-Gang .

CHEMICAL SCIENCE, 2012, 3 (04) :1157-1161

[5] Octopods versus Concave Nanocrystals: Control of Morphology by Manipulating the Kinetics of Seeded Growth via Co-Reduction [J].

DeSantis, Christopher J. ;

Peverly, Angela A. ;

Peters, Dennis G. ;

Skrabalak, Sara E. .

NANO LETTERS, 2011, 11 (05) :2164-2168

[6] Nanoalloys: From theory to applications of alloy clusters and nanoparticles [J].

Ferrando, Riccardo ;

Jellinek, Julius ;

Johnston, Roy L. .

CHEMICAL REVIEWS, 2008, 108 (03) :845-910

[7] Controlled Synthesis of Pd-Pt Alloy Hollow Nanostructures with Enhanced Catalytic Activities for Oxygen Reduction [J].

Hong, Jong Wook ;

Kang, Shin Wook ;

Choi, Bu-Seo ;

Kim, Dongheun ;

Lee, Sang Bok ;

Han, Sang Woo .

ACS NANO, 2012, 6 (03) :2410-2419

[8] Hexoctahedral Au Nanocrystals with High-Index Facets and Their Optical and Surface-Enhanced Raman Scattering Properties [J].

Hong, Jong Wook ;

Lee, Su-Un ;

Lee, Young Wook ;

Han, Sang Woo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (10) :4565-4568

[9] Atomic-Distribution-Dependent Electrocatalytic Activity of Au-Pd Bimetallic Nanocrystals [J].

Hong, Jong Wook ;

Kim, Dongheun ;

Lee, Young Wook ;

Kim, Minjung ;

Kang, Shin Wook ;

Han, Sang Woo .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2011, 50 (38) :8876-8880

[10] One-pot synthesis and electrocatalytic activity of octapodal Au-Pd nanoparticles [J].

Hong, Jong Wook ;

Lee, Young Wook ;

Kim, Minjung ;

Kang, Shin Wook ;

Han, Sang Woo .

CHEMICAL COMMUNICATIONS, 2011, 47 (09) :2553-2555

← 1 2 3 4 5 →