Highly Ordered Hierarchical Pt and PtNi Nanowire Arrays for. Enhanced Electrocatalytic Activity toward Methanol Oxidation

被引：59

作者：

Wang, Changzheng ^{[1
]}

Zhang, Yang ^{[2
]}

Zhang, Yajun ^{[1
]}

Xu, Ping ^{[1
]}

Feng, Cuimin ^{[1
]}

Chen, Tao ^{[1
]}

Guo, Tao ^{[1
]}

Yang, Fengnan ^{[1
]}

Wang, Qiang ^{[3
]}

Wang, Jingxiao ^{[1
]}

Shi, Mengtong ^{[1
]}

Fan, Louzhen ^{[4
]}

Chen, Shaowei ^{[5
]}

机构：

[1] Beijing Univ Civil Engn & Architecture, Minist Educ, Key Lab Urban Stormwater Syst & Water Environm, Beijing 100044, Peoples R China

[2] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing 100083, Peoples R China

[3] Capital Normal Univ, Coll Elementary Educ, Lab Microsized Funct Mat, Beijing 100048, Peoples R China

[4] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China

[5] Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 11期

基金：

中国国家自然科学基金;

关键词：

nanowire arrays; hierarchical nanostructure; methanol oxidation reaction; DMFCs; CdS nanoparticles; REDUCED GRAPHENE OXIDE; CARBON NANOTUBES; FACILE SYNTHESIS; FUEL-CELLS; PLATINUM NANOPARTICLES; CATALYTIC-ACTIVITY; SURFACE-STRUCTURE; PERFORMANCE; ANODE; NANOSTRUCTURES;

D O I：

10.1021/acsami.7b19727

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly ordered hierarchical Pt and PtNi nanowire arrays were prepared using CdS hierarchical nanowire arrays (HNWAs) as sacrificial templates and demonstrated high electrochemical active surface areas. For the resulting Pt HNWAs sample, the peak current for methanol oxidation at +0.74 V was almost 1 order of magnitude higher than that of Pt solid nanowire arrays prepared in a similar manner but without the use of CdS template, and the addition of a Ni cocatalyst effectively enhanced the tolerance against CO poisoning. The results demonstrated that highly ordered Pt and PtNi HNWAs may be exploited as promising anode catalysts in the application of direct methanol fuel cells.

引用

页码：9444 / 9450

页数：7

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