Synthesis and Electrocatalytical Application of Hybrid Pd/Metal Oxides/MWCNTs

IF 2.3 Q3 ELECTROCHEMISTRY

International journal of electrochemistry Pub Date : 2018-06-06 DOI:10.1155/2018/8416268

Yuh-Jing Chiou, Guozhi Wu, Hong‐Ming Lin, A. Borodziński, P. Kędzierzawski, L. Stobiński

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引用次数: 5

Abstract

The performance of Pd electrocatalysts for formic acid electrooxidation was improved by application of metal oxide-multiwall carbon nanotubes composites as a catalyst support. Hybrid oxides/MWCNTs were synthesized by two different methods: chemical reduction method and impregnation method. Pd based catalysts were synthesized by polyol method on the MWCNTs or oxide/MWCNTs composites. The In2O3 was deposited on MWCNTs by impregnation method (In2O3/MWCNTs-IM support) and in the presence of NaBH4 (In2O3/MWCNTs-NaBH4 support). The physical properties of the Pd/In2O3/MWCNTs-IM, Pd/In2O3/MWCNTs-NaBH4, Pd/SnO2/MWCNTs, and Pd/MWCNTs catalysts were characterized and their electrocatalytical performance in formic acid oxidation was compared. During Pd deposition on In2O3/MWCNTs-NaBH4 support, InPd2 structure was formed as observed by XRD. The electrochemical tests indicate that the two Pd/ In2O3/MWCNTs electrocatalysts have higher electrocatalytic activity than those of Pd/SnO2/MWCNTs and Pd/MWCNTs. The best performance was observed for the catalyst obtained by In2O3 impregnation of MWCNTs denoted by Pd/In2O3/MWCNTs-IM.

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钯/金属氧化物/MWCNTs杂化材料的合成及其电催化应用

采用金属氧化物-多壁碳纳米管复合材料作为催化剂载体，提高了钯电催化剂对甲酸电氧化的性能。采用化学还原法和浸渍法合成了复合氧化物/MWCNT。采用多元醇法在MWCNTs或氧化物/MWCNTs复合材料上合成了钯基催化剂。通过浸渍法（In2O3/MWCNTs IM载体）和在NaBH4（In2O3/MWCNTs-NaBH4载体）存在下将In2O3沉积在MWCNTs上。表征了Pd/In2O3/MWCNTs IM、Pd/In2O3/MWCNTs-NaBH4、Pd/SnO2/MWCNTs和Pd/MWCNT催化剂的物理性能，并比较了它们在甲酸氧化中的电催化性能。在In2O3/MWCNTs-NaBH4载体上沉积Pd的过程中，通过XRD观察到形成了InPd2结构。电化学测试表明，两种Pd/In2O3/MWCNTs电催化剂的电催化活性均高于Pd/SnO2/MWCNT和Pd/MWCNT。观察到通过用Pd/In2O3/MWCNTs IM表示的MWCNTs的In2O3浸渍获得的催化剂的最佳性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International journal of electrochemistry ELECTROCHEMISTRY-

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审稿时长

7 weeks