Beneficial role of silicotungstic acid presence on the WO3-modified boron-doped diamond substrate on the electrocatalytic activity for methanol anodic oxidation of supported platinum

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-03-26 DOI:10.1016/j.ijhydene.2025.03.327

Nicolae Spătaru , Loredana Preda , Elena Matei , Veronica Satulu , Marius Alexandru Mihai , Mihai Marian Radu , Cristina Donath , Olivia Georgeta Moga , Tanţa Spătaru

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引用次数: 0

Abstract

The present paper evidences the beneficial effect that the combination of Pt with WO₃ and silicotungstic acid (STA) brings to the methanol oxidation electroactivity. To avoid substrate interferences boron doped diamond (BDD) was used as the electrocatalysts support. SEM measurements have shown that the use of a STA/WO₃/BDD substrate allows the electrodeposition of smaller Pt clusters, exhibiting better dispersion, higher homogeneity in terms of size and enhanced electrochemically active surface area. Cyclic voltammetry, polarization and EIS experiments demonstrated than STA addition on the WO₃/BDD support induces to the deposited Pt higher activity and improved resistance to fouling during methanol anodic oxidation. Based on the XPS results such behavior was tentatively ascribed to the higher surface concentration of Pt(OH)₂ species and adsorbed water that STA presence enables, which may assist in the oxidative desorption of reaction intermediates.

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.