Platinum Nanoparticles Loaded on Ta2O5/MWCNTs to Improve Methanol Electrooxidation Activity

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL Catalysis Letters Pub Date : 2025-03-17 DOI:10.1007/s10562-025-04993-y

Bohua Wu, Yifan Liu, Fengxiao Du, Xicheng Lu, Xiaoqin Wang, Shanxin Xiong

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Abstract

The composite materials of Pt-based catalysts and metal oxides have potential advantages in direct methanol fuel cells. However, synthesizing controllable Pt-based catalysts with high electrochemical properties is still challenging. In this paper, commercial Pt/C is improved by replacing commercial carbon black with carbon nanotubes and adding Ta₂O₅ cocatalyst. The particle size, structure, surface morphology, activity, and stability of the methanol oxidation reaction (MOR) of Pt/Ta₂O₅/MWCNTs composites were studied. The prepared Pt/Ta₂O₅/MWCNTs catalysts have higher catalytic activity and durability than commercial Pt/C in methanol electrooxidation reactions. In addition, when the loading of co-catalyst and Pt nanoparticles is adjusted, the catalyst with the loading of 20% Pt/MWCNTs/Ta₂O₅-15% has better electrochemical activity. This study shows that the Pt/ Ta₂O₅/MWCNTs catalyst should be a promising DMFC catalyst.

Graphical Abstract

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.