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首页> 外文期刊>International journal of hydrogen energy >Multiwalled Carbon Nanotube-supported Pt/sn And Pt/sn/pmo_(12) Electrocatalysts For Methanol Electro-oxidation
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Multiwalled Carbon Nanotube-supported Pt/sn And Pt/sn/pmo_(12) Electrocatalysts For Methanol Electro-oxidation

机译:碳纳米管负载的多壁碳纳米管负载的Pt / sn和Pt / sn / pmo_(12)甲醇电氧化催化剂

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摘要

Carbon nanotube (CNT) containing electrocatalysts, Pt/Sn/PMo_(12)/CNT, Pt/Sn/CNT, and Pt/CNT, were prepared by a microwave-heated polyol process. The electrocatalysts were characterized by X-ray diffraction, energy dispersive spectroscopy, scanning and transmission electron microscopy, and cyclic voltammetry. We found that the addition of PMo_(12) can help Pt-Sn nanoparticles to disperse very uniformly on the outer walls of CNTs. The Pt/Sn/PMo_(12)/CNT catalyst exhibited the lowest onset potential for electro-oxidation of adsorbed C intermediates, compared to the Pt/Sn/CNT and Pt/CNT catalysts. It also generated much higher current density for methanol oxidation at room temperature compared to Pt/Sn/CNT and Pt/CNT catalysts, which were prepared by the same method.
机译:通过微波加热的多元醇工艺制备了包含电催化剂Pt / Sn / PMo_(12)/ CNT,Pt / Sn / CNT和Pt / CNT的碳纳米管(CNT)。通过X射线衍射,能量色散光谱,扫描和透射电子显微镜以及循环伏安法对电催化剂进行了表征。我们发现,添加PMo_(12)可以帮助Pt-Sn纳米颗粒非常均匀地分散在CNT的外壁上。与Pt / Sn / CNT和Pt / CNT催化剂相比,Pt / Sn / PMo_(12)/ CNT催化剂对吸附的C中间体表现出最低的电氧化起始电位。与通过相同方法制备的Pt / Sn / CNT和Pt / CNT催化剂相比,它在室温下产生的甲醇氧化电流密度也高得多。

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