Synthesis of carbon-PtAu nanoparticle hybrids originating from triethoxysilane-derivatized ionic liquids for methanol electrooxidation and the catalytic reduction of 4-nitrophenol

被引：34

作者：

Peng, Yingjing ^{[1
]}

Wu, Xiao ^{[1
]}

Qiu, Lihua ^{[1
]}

Liu, Changhai ^{[2
]}

Wang, Suidong ^{[2
]}

Yan, Feng ^{[1
]}

机构：

[1] Soochow Univ, Jiangsu Key Lab Adv Funct Polymer Design & Applic, Dept Polymer Sci & Engn, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China

[2] Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 32期

关键词：

ENHANCED ELECTROCATALYTIC ACTIVITY; MESOPOROUS CARBON; PALLADIUM NANOPARTICLES; POROUS CARBON; FUEL-CELL; DOPED CARBON; ELECTRODE; CAPACITY; ANODE; AU;

D O I：

10.1039/c3ta11676j

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：

A facile and effective procedure for the synthesis of PtAu nanoparticles-carbon (PtAu-C) via the carbonization of triethoxysilane-derivatized ionic liquids is reported. A triethoxysilyl-functionalized ionic liquid, 1-methyl-3-[3-(triethoxysilyl)propyl]imidazolium chloride ([Si-pim][Cl]) was synthesized and anion-exchanged with a Pt precursor (H2PtCl6) and a Au precursor (HAuCl4) to form [Si-pim][PtCl6](x)[AuCl4](y) (the suffixes x and y represent the relative molar ratios of Pt and Au in the feed, respectively). The carbonization of [Si-pim][PtCl6](x)[AuCl4](y), followed by hydrofluoric acid (HF) etching, produced PtxAuy-C hybrids. The composition of the PtxAuy alloy NPs can be controlled simply by adjusting the feed ratio in the metal precursor solution. The electrocatalytic properties of the prepared PtxAuy-C hybrids were determined by the composition of the alloy NPs. The resultant Pt-C hybrids show high electroactivity towards methanol oxidation in an acidic medium, while Pt4Au1-C shows high activity towards the reduction of 4-nitrophenol. The present study provides a highly efficient approach for the development of high-performance noble metals and their alloy-based catalysts.

引用

页码：9257 / 9263

页数：7

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