Polyhedral Palladium-Silver Alloy Nanocrystals as Highly Active and Stable Electrocatalysts for the Formic Acid Oxidation Reaction

被引：69

作者：

Fu, Geng-Tao ^{[1
]}

Liu, Chang ^{[1
]}

Zhang, Qi ^{[2
]}

Chen, Yu ^{[2
]}

Tang, Ya-Wen ^{[1
]}

机构：

[1] Nanjing Normal Univ, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Nanjing 210023, Jiangsu, Peoples R China

[2] Shaanxi Normal Univ, Sch Mat Sci & Engn, Key Lab Macromol Sci Shaanxi Prov, Xian 710062, Peoples R China

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

基金：

中国国家自然科学基金;

关键词：

WATER-BASED SYNTHESIS; REDUCED GRAPHENE OXIDE; ENHANCED ACTIVITY; TOLERANT ABILITY; PD-AG; NANOPARTICLES; ELECTROOXIDATION; ETHANOL; CATALYSIS; NANOCUBES;

D O I：

10.1038/srep13703

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：

Polyhedral noble-metal nanocrystals have received much attention and wide applications as electrical and optical devices as well as catalysts. In this work, a straightforward and effective hydrothermal route for the controllable synthesis of the high-quality Pd-Ag alloy polyhedrons with uniform size is presented. The morphology, composition and structure of the Pd-Ag alloy polyhedrons are fully characterized by the various physical techniques, demonstrating the Pd-Ag alloy polyhedrons are highly alloying. The formation/growth mechanisms of the Pd-Ag alloy polyhedrons are explored and discussed based on the experimental observations and discussions. As a preliminary electrochemical application, the Pd-Ag alloy polyhedrons are applied in the formic acid oxidation reaction, which shows higher electrocatalytic activity and stability than commercially available Pd black due to the "synergistic effects" between Pd and Ag atoms.

引用

页数：9

共 37 条

[1] Electrocatalytic oxidation of ethanol at Pd/Ag nanodendrites prepared via low support electrodeposition and galvanic replacement [J].