Optimization of gold-palladium core-shell nanowires towards H2O2 reduction by adjusting shell thickness

被引：9

作者：

Dong, Yongdi ^{[1
]}

Chen, Qiaoli ^{[1
,2
]}

Cheng, Xiqing ^{[1
]}

Li, Huiqi ^{[1
]}

Chen, Jiayu ^{[1
]}

Zhang, Xibo ^{[1
]}

Kuang, Qin ^{[1
]}

Xie, Zhaoxiong ^{[1
]}

机构：

[1] Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Collaborat Innovat Ctr Chem Energy Mat, Dept Chem,Coll Chem & Chem Engn, Xiamen 361005, Peoples R China

[2] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Coll Chem Engn, Hangzhou 310014, Peoples R China

来源：

NANOSCALE ADVANCES | 2020年 / 2卷 / 02期

基金：

中国国家自然科学基金;

关键词：

REAL SURFACE-AREA; HYDROGEN-PEROXIDE; CETYLTRIMETHYLAMMONIUM BROMIDE; ELECTROCHEMICAL DETECTION; BIMETALLIC NANOCRYSTALS; PD NANOPARTICLES; THIN-FILM; AU; ELECTROREDUCTION; ELECTROCATALYST;

D O I：

10.1039/c9na00726a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Designable bimetallic core-shell nanoparticles exhibit superb performance in many fields including industrial catalysis, energy conversion and chemical sensing, due to their outstanding properties associated with their tunable electronic structure. Herein, Au-Pd core-shell (AurichPd@AuPdrich) nanowires (NWs) were synthesized through a one-pot facile chemical reduction method in the presence of cetyltrimethyl ammonium bromide (CTAB) surfactant. The thickness of the Pd shell could be adjusted by directly controlling the Au/Pd feeding ratio while maintaining the nanowire morphology. The as-obtained Au75Pd25 core-shell NWs with a thin Pd-rich shell showed significantly enhanced activities towards the reduction of hydrogen peroxide with the sensitivity reaching 338 mu A cm(-2) mM(-1) and a linear range up to 10 mM. In sum, Pd shell thickness could be used to adjust the electronic structure, thereby optimizing the catalytic activity.

引用

页码：785 / 791

页数：7

共 53 条

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