Electrodeposition of platinum microparticles into polyaniline films with electrocatalytic applications
Electrodeposition of platinum microparticles into polyaniline films with electrocatalytic applications
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DOI：
10.1021/ac00172a012
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发表时间：
1988-11
影响因子：
7.4
通讯作者：
Kent M. Kost;D. Bartak;Beth. Kazee;T. Kuwana
中科院分区：
文献类型：
--
作者：
Kent M. Kost;D. Bartak;Beth. Kazee;T. Kuwana
本文报道了在玻碳电极上电沉积铂微粒到聚苯胺（PA）膜上，并研究了它们对氢还原和甲醇氧化的催化活性。电沉积的铂微粒分散在一个三维阵列中的原纤型聚苯胺膜电极所证明的扫描电子显微镜显微照片。这些Pt/PA/GC电极对氢气的催化还原和甲醇的催化氧化表现出良好的活性。由于聚苯胺是一种导电聚合物，在电位为0.2 V，相对于Ag/AgCl，PA膜贡献了大量的电荷在甲醇的氧化过程中，在0.6 V。此外，他们还提供了一个保护矩阵的Pt微粒对颗粒的损失和污染的散装溶液。该电极在酸性甲醇溶液中表现出优异的长期稳定性。
The electrodeposition of platinum microparticles into polyaniline (PA) films on glassy carbon (gc) electrodes and their catalytic activity for the reduction of hydrogen and the oxidation of methanol are described. Electrodeposited platinum microparticles are dispersed in a three-dimensional array in fibril-type polyaniline film electrodes as evidenced by scanning electron microscope photomicrographs. These Pt/PA/gc electrodes exhibit good activity with respect to the catalytic reduction of hydrogen and the catalytic oxidation of methanol. Since polyaniline is a conducting polymer at potentials positive of 0.2 V vs Ag/AgCl, the PA films contribute a substantial amount of charge during the oxidation of methanol at 0.6 V. In addition, they also offer a protecting matrix for the Pt microparticles against particle loss and contamination from the bulk solution. The electrodes exhibited excellent long-term stability in the acidic methanol solutions.