甲酸
催化作用
脱氢
合金
材料科学
共晶体系
化学工程
溶解
碳纳米管
无机化学
纳米技术
化学
冶金
有机化学
工程类
作者
Pingping Yang,Li Zhang,Xuejiao Wei,Shiming Dong,Yuejun Ouyang
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-11-25
卷期号:12 (23): 4182-4182
被引量:4
摘要
In this study, the Pd3Co1 alloy nanocluster from a multiwalled carbon nanotube (MWCTN) catalyst was fabricated in deep eutectic solvents (DESs) (referred to Pd3Co1/CNTs). The catalyst shows a better mass activity towards the formic acid oxidation reaction (FAOR) (2410.1 mA mgPd-1), a better anti-CO toxicity (0.36 V) than Pd/CNTs and commercial Pd/C. The improved performance of Pd3Co1/CNTs is attributed to appropriate Co doping, which changed the electronic state around the Pd atom, lowered the d-band of Pd, formed a new Pd-Co bond act at the active sites, affected the adsorption of the toxic intermediates and weakened the dissolution of Pd; moreover, with the assistance of DES, the obtained ultrafine Pd3Co1 nanoalloy exposes more active sites to enhance the dehydrogenation process of the FAOR. The study shows a new way to construct a high-performance Pd-alloy catalyst for the direct formic acid fuel cell.
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