Noble Metal-Free Oxidative Electrocatalysts: Polyaniline and Co(II)-Polyaniline Nanostructures Hosted in Nanoporous Silica

被引：45

作者：

Silva, Rafael ^{[1
]}

Asefa, Tewodros ^{[1
,2
]}

机构：

[1] Rutgers State Univ, Dept Chem & Chem Biol, Piscataway, NJ 08854 USA

[2] Rutgers State Univ, Dept Chem & Biochem Engn, Piscataway, NJ 08854 USA

来源：

ADVANCED MATERIALS | 2012年 / 24卷 / 14期

基金：

美国国家科学基金会;

关键词：

eletrocatalyst; polyaniline; Co(II)-polyaniline; mesoporous silica; L-ascorbic acid; oxidation; FUEL-CELL; METHANOL ELECTROOXIDATION; PERNIGRANILINE SALT; ANODE CATALYSTS; CARBON; ACID; POLYMERIZATION; NANOPARTICLES; REDUCTION; PD;

D O I：

10.1002/adma.201104126

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An efficient nanocomposite electrocatalyst composed of mesoporous silica (SBA-15) with polyaniline (PANI) nanostructures within its channel pores (PANI/SBA-15) is synthesized and characterized. The resulting PANI/SBA-15 is capable of chelating Co(II) ions, presumably via its nitrogen atoms on PANI/diamine groups. Both the metal-free (SBA-15/PANI) and the Co(II)-doped SBA-15/PANI nanocomposite materials showed high electrocatalytic activity for oxidation of L-ascorbic acid, with very low overpotential and high current density. The activity of PANI/SBA-15 toward oxidation of L-ascorbic acid is comparable to that obtained from a conventional Pt/C electrocatalyst. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：1878 / 1883

页数：6

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