Controllable synthesis of pd nanocatalysts for direct formic acid fuel cell (DFAFC) application: From pd hollow nanospheres to pd nanoparticles

被引：123

作者：

Ge, Junjie ^{[1
]}

Xing, Wei ^{[1
]}

Xue, Xinzhong ^{[1
]}

Liu, Changpeng ^{[1
]}

Lu, Tianhong ^{[1
]}

Liao, Jianhui ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2007年 / 111卷 / 46期

关键词：

D O I：

10.1021/jp073666p

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：

The controllable synthesis of nanosized carbon-supported Pd catalysts through a surface replacement reaction (SRR) method is reported in this paper. Depending on the synthesis conditions the Pd can be formed on Co nanoparticles surface in hollow nanospheres or nanoparticles structures. Citrate anion acts as a stabilizer for the nanostructures, and protonation of the third carboxyl anion and hence the nanostructure and size of the resulting catalysts are controlled via the pH of the synthesis solution. Pd hollow nanospheres, containing smaller Pd nanoparticles, supported on carbon are formed under the condition of pH 9 reaction solution. Meanwhile, highly dispersed carbon-supported Pd nanoparticles can be formed with higher pH (pH >= 10). All catalysts prepared through the SRR method show enhanced activities for the HCOOH electro-oxidation reaction compared to catalysts reduced by NaBH4.

引用

页码：17305 / 17310

页数：6

共 30 条

[1] Effect of Me (Pt plus Ru) content in Me/C catalysts on PtRu alloy formation: An XRD analysis [J].