| 过渡金属掺杂Ru-Se簇合物电催化剂氧还原性能的对比研究 |
| Comparison of Electrocatalytic O2 Reduction Performances between Transition Metal Doped Ru-Se Cluster |
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| 摘要: 采用羰基金属化合物低温合成法制备了不同掺杂元素的M-Ru-Se(M=Fe，W，Mo)簇合物，并应用旋转圆盘电极电位扫描法测试簇合物的电催化活性及其抗甲醇性，采用TEM、XRD、EDS技术表征催化剂的微观形貌、结构和组成。结果显示，掺杂过渡元素对簇合物的催化活性及其抗甲醇性有明显的影响，其中Mo-Ru-Se的还原电流最高，催化活性最高，W-Ru-Se次之，Fe-Ru-Se最低；电解质中加入甲醇后，W-Ru-Se的活性最高，Mo-Ru-Se次之，Fe-Ru-Se最低；相对地，W-Ru-Se具有较高的抗甲醇性。掺杂元素主要通过影响Ru核d电子结构改变簇合物的催化性能。 |
| 关键词: 氧电还原 Ru纳米簇硫族化合物 电催化剂 抗甲醇性 |
| 基金项目: |
| Abstract: Black powders of M-Ru-Se (M=Mo, W, Fe) were synthesized by low temperature method. The catalytic activity and methanol-resistance of electro-catalysts were tested by the potentiodynamic method. The nano-structure and the morphology of catalysts were characterized by XRD, SEM, TEM. And the relative atomic ratio of catalysts was determined by EDS(energy dispersive spectroscopy). The results show that the catalytic activity and methanol-resistance of Ru-Se are markedly changed by doping of transition metal and X-Ru-Se is better than Ru-Se, and the performance of W-Ru-Se is the best in the four in methanol containing electrolyte, Mo-Ru-Se and Fe-Ru-Se are somewhat lower than that of W-Ru-Se. The increase in the activity and methanol-resistance is due to the effect of the doped element on d electron of Ru core. |
| Keywords: oxygen electro-reduction transition metal cluster chalcogenides electro-catalyst methanol-resistant property |
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| 刘世斌,段东红,刘洁,张忠林,郝晓刚,孙彦平.过渡金属掺杂Ru-Se簇合物电催化剂氧还原性能的对比研究[J].无机化学学报,2007,23(5):802-806. |
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