TiO2-based nanowire supported catalysts for methanol electrooxidation in direct methanol fuel cells
TiO2-based nanowire supported catalysts for methanol electrooxidation in direct methanol fuel cells
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DOI：
10.1016/j.jiec.2010.10.021
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发表时间：
2011-07
影响因子：
6.1
通讯作者：
Kyung‐Won Park;Young-Woo Lee;Jae-Kyung Oh;Do-Young Kim;Sang-Beom Han;A-Ra Ko;Si-Jin Kim;Hyunseo Kim
中科院分区：
文献类型：
--
作者：
Kyung‐Won Park;Young-Woo Lee;Jae-Kyung Oh;Do-Young Kim;Sang-Beom Han;A-Ra Ko;Si-Jin Kim;Hyunseo Kim
水热法制备的纯TiO 2和Ru掺杂的TiO 2纳米粒子均为一维纳米线结构，透射电子显微镜和X射线衍射分析证实了纳米线结构为完全金红石相。采用循环伏安法在硫酸溶液中测试，与PtRu/TiO 2-NW相比，PtRu/Ru0.1Ti0.9O2-NW表现出更高的电流密度和更厚的双电层区域，这分别是由于NW的导电性和钌元素的电化学性质增强所致。对于甲醇电氧化，此外，优异的催化活性和稳定性的PtRu/Ru0.1Ti0.9O2-NW，相比的PtRu/TiO 2-NW，可能是由于改善的电气和电化学性能的Ru0.1Ti0.9O2-NW载体。
The pure TiO2and Ru-doped TiO2nanoparticles obtained by means of hydrothermal process show one-dimensional nanowire (NW) structures with complete rutile phase confirmed by transmission electron microscopy and X-ray diffraction analysis. Using cyclic voltammetry in sulfuric acid solution, compared to the PtRu/TiO2-NW, the PtRu/Ru0.1Ti0.9O2-NW exhibits much higher current densities and thicker double layer region caused by an enhanced electrical conductivity of the NW and electrochemical properties of ruthenium element, respectively. For methanol electrooxidation, furthermore, the excellent catalytic activity and stability of the PtRu/Ru0.1Ti0.9O2-NW, as compared to that of the PtRu/TiO2-NW, may be due to improved electrical and electrochemical properties of the Ru0.1Ti0.9O2-NW support.