Biphasic oxygen reduction with electrochemical electron donor regeneration within supported molecular solvent or ionic liquid film

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2025-03-06 DOI:10.1007/s10008-025-06222-3

Katarzyna Dusilo, Aleksandra Siwiec, Magdalena Warczak, Marcin Holdynski, Piotr Pieta, Marcin Opallo

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Abstract

In recent years, electrochemical 2-electron oxygen reduction reaction became an important research topic because of the quest for a sustainable method of H₂O₂ production. The biphasic H₂O₂ generation with electrochemical recycling of the electron donor is one of the possibilities and was earlier studied employing an organic phase as a binder with a carbon paste electrode. Here, we report that H₂O₂ can be generated at the interface formed by electron donor (decamethylferrocene) solution in supported molecular solvent (2-nitrophenyloctyl ether) or ionic liquid (1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide) film deposited on an indium tin oxide electrode and acidic aqueous solution. The efficiency of this reaction was estimated on the basis of electrochemical detection of H₂O₂ at a Pt microelectrode tip approaching the liquid|liquid interface. It was shown that its yield is higher when the electron donor is electrochemically recycled.

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在负载型分子溶剂或离子液体膜内进行电化学电子供体再生的双相氧还原

近年来，电化学2电子氧还原反应成为一个重要的研究课题，因为寻求一种可持续的生产H2O2的方法。电子供体的电化学循环生成双相H2O2是一种可能性，早期研究使用有机相作为碳糊电极的粘合剂。本文报道了在负载型分子溶剂（2-硝基苯辛基醚）或离子液体（1-丁基-3-甲基咪唑双（三氟甲基磺酰基）亚胺）沉积在氧化铟锡电极和酸性水溶液上形成的界面上，电子供体（十甲基二茂铁）溶液可以生成H2O2。通过电化学检测Pt微电极尖端接近液- | -液界面处的H2O2，估计了该反应的效率。结果表明，对电子给体进行电化学回收后，其产率更高。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.