共 46 条
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
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
收藏
页码:798 / 805
页数:8
相关论文