过渡金属的掺杂对于α-MnO2催化剂催化性能的影响
The Transition Matal Doping Effect on the Catalytic Activity of α-MnO2 for Oxygen Reduction Reaction
摘要: 采用简单的水热法合成法成功制备了不同过渡金属(Fe、Co、Cu)掺杂的α-MnO2纳米线催化剂。过渡金属掺杂后催化剂晶体结构和形貌分别通过XRD和SEM进行表征，电催化性能通过循环伏安曲线，线性极化曲线，电化学阻抗谱等手段进行研究。研究表明，过渡金属掺杂能够提高催化剂再氧还原催化反应中的半波电位，极限电流密度等参数，表明催化剂的动力学性能得到了显著改善。在三种过渡金属中，Fe掺杂的效果最为明显，最具有期望成为高活性催化剂的替代品。
Abstract: Transition metals (Fe, Co, Cu) doped α-MnO2 nanowires have been successful synthesized via a simple hydrothermal method. After doping, crystal structures and the morphologies of the syn-thesized catalysts are characterized by X-ray diffraction and Scanning electron microscope, and the catalytic performance for oxygen reduction reaction are evaluated by cyclic voltammetry curve, linear sweep voltammetry and Electrochemical Impedance Spectroscopy. The results show that the half-wave potential and limiting current density of the catalysts have been greatly enhanced, suggesting that the kinetics has been significantly improved by the transition metal doping. Fe doped α-MnO2, exhibiting the best catalytic performance, is one of the most promis-ing candidates for oxygen reduction reaction.
文章引用：武子婿, 左旭泽, 刘琪琳, 贺浩, 陈曙光. 过渡金属的掺杂对于α-MnO2催化剂催化性能的影响[J]. 化学工程与技术, 2020, 10(3): 161-170. https://doi.org/10.12677/HJCET.2020.103022

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