Electrocatalytic activity of Pt and Ru photodeposited polyaniline electrodes for methanol oxidation
Electrocatalytic activity of Pt and Ru photodeposited polyaniline electrodes for methanol oxidation
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DOI：
10.5796/electrochemistry.75.39
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发表时间：
2007-01-01
期刊：
影响因子：
2.5
通讯作者：
Kuwabata, Susumu
中科院分区：
文献类型：
--
作者：
Arimoto, Satoshi;Nakano, Hiroyuki;Kuwabata, Susumu
研究了Pt、Ru或两者同时在聚苯胺表面的光化学沉积及其对甲醇氧化的电催化活性。由于沉积量与光照射时间成正比，因此易于控制。最高活性，即，通过适当调节Pt/Ru沉积比，可以获得最大的阳极电流密度和最负的起始电位。从TEM图像，光沉积的金属颗粒尺寸被确定为1类似于2nm。讨论了聚苯胺作为光催化剂和电子导体的双重功能。
Photochemical deposition of Pt, Ru or both on polyaniline and their electrocatalytic activity for methanol oxidation were investigated. The deposition quantity was easily controlled since it was proportional to light irradiation time. The highest activity, i.e., the largest anodic current density and the most negative onset potential, of the metal deposited polyaniline electrode were obtained by adjusting Pt/Ru deposition ratio appropriately. From a TEM image, the photodeposited metal particle size was determined to be 1 similar to 2 nm. The bifunctional roles of the polyaniline, as a photocatalyst and an electron conductor, are also discussed.