Design of AgM Bimetallic Alloy Nanostructures (M = Au, Pd, Pt) with Tunable Morphology and Peroxidase-Like Activity

被引：417

作者：

He, Weiwei ^{[1
,3
]}

Wu, Xiaochun ^{[1
]}

Liu, Jianbo ^{[1
,3
]}

Hu, Xiaona ^{[1
,3
]}

Zhang, Ke ^{[1
,3
]}

Hou, Shuai ^{[1
,3
]}

Zhou, Weiya ^{[2
]}

Xie, Sishen ^{[2
]}

机构：

[1] Natl Ctr Nanosci & Technol, CAS Key Lab Standardizat & Measurement Nanotechno, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Inst Phys, Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Chinese Acad Sci, Grad Sch, Beijing 100190, Peoples R China

来源：

CHEMISTRY OF MATERIALS | 2010年 / 22卷 / 09期

基金：

中国国家自然科学基金;

关键词：

SHAPE-CONTROLLED SYNTHESIS; PLATINUM NANOPARTICLE; METHANOL ELECTROOXIDATION; SILVER NANOPARTICLES; OXIDE NANOPARTICLES; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; GLUCOSE DETECTION; SUPEROXIDE ANION; SURFACE;

D O I：

10.1021/cm100393v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Bimetallic alloy nanoparticles (NPs) exhibit unique optical and catalytic properties that are dependent on their morphology and composition. In this paper, a general and facile way was developed to prepare Ag-related bimetallic alloy NPs with hollow/porous structures, including AgAu, AgPd, and AgPt. The formation of the alloy structures is evidenced by high-resolution transmission electron microscopy (TEM), scanning transmission electron microscopy-energy-dispersive X-ray analysis (STEM-EDX) mapping, and ultraviolet-visible-near-infrared (UV-vis-NIR) absorption spectra. AgM alloy NPs exhibit peroxidase-like activity. A unique composition dependence is found and can be used to tailor the catalytic activity. In addition to the recent discoveries about peroxidase mimetics on Fe3O4 NPs and sheetlike FeS nanostructures, our findings suggest a new type of candidate as peroxidase mimics. Furthermore, for noble metals, apart from size and shape, tailoring the composition poses another effective way to tune the catalytic activity.

引用

页码：2988 / 2994

页数：7

共 46 条

[1] Oxidase-Like Activity of Polymer-Coated Cerium Oxide Nanoparticles [J].