A comparative study of poly(acrylic acid) and poly(styrenesulfonic acid) doped into polyaniline as platinum catalyst support for methanol electro-oxidation

被引：27

作者：

Kuo, Chung-Wen ^{[2
]}

Chen, Bor-Kuan ^{[3
]}

Tseng, Yu-Hsi ^{[2
]}

Hsieh, Tar-Hwa ^{[2
]}

Ho, Ko-Shan ^{[2
]}

Wu, Tzi-Yi ^{[1
]}

Chen, Ho-Rei ^{[2
]}

机构：

[1] Natl Yunlin Univ Sci & Technol, Dept Chem Engn & Mat Engn, Yunlin 64002, Taiwan

[2] Natl Kaohsiung Univ Appl Sci, Dept Chem & Mat Engn, Kaohsiung 80778, Taiwan

[3] Kun Shan Univ, Dept Mat Engn, Tainan 71003, Taiwan

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2012年 / 43卷 / 05期

关键词：

Polyaniline; Poly(acrylic acid); Poly(styrenesulfonic acid); Nanowires; Cyclic voltammetry; Methanol oxidation; FORMIC-ACID; FUEL-CELLS; ELECTROCATALYTIC ACTIVITY; COMPOSITE FILMS; SULFONIC-ACID; PT-RU; OXIDATION; ELECTRODES; PARTICLES; NANOWIRES;

D O I：

10.1016/j.jtice.2012.03.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Polyaniline (PANI) is doped with poly(acrylic acid) (PAA) and poly(styrenesulfonic acid) (PSS) via a doping-dedoping-redoping process. Fourier transform infrared (FT-IR) spectroscopy results confirm that PANI is doped with PSS (or PAA). X-ray photoelectron spectroscopy (XPS) results indicate that the nitrogen atoms of PANI-PSS are more positively charged than those of PANI-PAA. Scanning electron microscopy (SEM) images reveal that PANI-PSS is composed of highly porous nanowires. Platinum (Pt) can be deposited onto PANI-PAA and PANI-PSS films using the potentiostatic mode to obtain PANI-PAA-Pt and PANI-PSS-Pt composite electrodes, respectively. Auger electron spectroscopy (AES) results indicate that Pt particles disperse more uniformly into the spatial regions of PANI-PSS than those of PANI-PAA. The SO3H group in PANI-PSS may facilitate the electrodeposition of Pt better than the CO2H group in PANI-PAA. Cyclic voltammetry results and chronoamperometric response measurements show that the activity and stability toward methanol oxidation of the PANI-PSS-Pt electrode are better than those of the PANI-PAA-Pt electrode. (C) 2012 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：798 / 805

页数：8

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