Shape-dependent electrocatalytic activity of monodispersed palladium nanocrystals toward formic acid oxidation

被引：84

作者：

Zhang, Xuwei ^{[1
,2
]}

Yin, Huajie ^{[1
]}

Wang, Jinfeng ^{[1
]}

Chang, Lin ^{[1
]}

Gao, Yan ^{[1
]}

Liu, Wei ^{[2
]}

Tang, Zhiyong ^{[1
]}

机构：

[1] Natl Ctr Nanosci & Technol, Lab Nanomat, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Coll Chem & Chem Engn, Beijing 100049, Peoples R China

来源：

NANOSCALE | 2013年 / 5卷 / 18期

基金：

中国国家自然科学基金;

关键词：

SINGLE-CRYSTAL ELECTRODES; FUEL-CELLS; PD NANOPARTICLES; FACETS; ELECTROOXIDATION; VOLTAMMOGRAMS; CATALYSTS; PLATINUM;

D O I：

10.1039/c3nr03100d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The catalytic activity of different-shaped and monodispersed palladium nanocrystals, including cubes, octahedra and rhombic dodecahedra, toward the electrochemical oxidation of formic acid has been systematically evaluated in both HClO4 and H2SO4 solutions. Notably, the cubic palladium nanocrystals wholly exposed with {100} facets exhibit the highest activity, while the rhombic dodecahedra with {110} facets show the lowest electrocatalytic performance. Furthermore, compared with HClO4 electrolyte, the catalytic activity is found to be obviously lower in H2SO4 solution likely due to the competitive adsorption of SO42- ions and formic acid on the surface of Pd nanocrystals.

引用

页码：8392 / 8397

页数：6

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