Gold and gold-platinum clusters as nanocatalysts for conversion of hydrogen peroxide

被引：0

作者：

Zdunek, Konstanty ^{[1
]}

Wieckowska, Agnieszka ^{[1
]}

机构：

[1] Univ Warsaw, Fac Chem, Pasteura 1, PL-02093 Warsaw, Poland

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2025年 / 984卷

关键词：

Gold clusters; Gold-platinum clusters; Catalytic properties; Voltammetry; electron transfer; ELECTRON-TRANSFER; CHARGE-TRANSFER; NANOPARTICLES; NANOCLUSTERS; SIZE; CATALYSIS;

D O I：

10.1016/j.jelechem.2025.119009

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrocatalytic properties of Au24Pt(SR)18 (shortly: Au24Pt) clusters protected by n-butanethiol C4H9SH haven't been characterized in detail yet. The platinum atom, surrounded by delocalized electrons in the gold core Au12Pt, exhibits different behaviour compared to atoms in pure platinum nanoparticles. In this study we confirm this phenomenon by demonstrating a strong electrocatalytic effect for the electrooxidation and electroreduction of hydrogen peroxide using a gold working electrode modified with a Nafion-suspended product containing Au24Pt clusters (Nafion - perfluorosulfonic copolymer). The currents measured at constant potentials of +/- 0.5 V versus an Ag/AgCl reference electrode, and hydrogen peroxide molarities ranging from 1 to 10 mM, show a linear dependence with a high correlation coefficient of up to 0.999. Due to the durability of the modified electrodes in water-based solutions and the reproducibility of the results, this technique appears promising for detecting the hydrogen peroxide in biological samples without damaging the sample, provided it remains stable within the specified potential range.

引用

页数：8

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