Photoelectrochemical Epoxidation of Cyclohexene on an α-Fe2O3 Photoanode Using Water as the Oxygen Source

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2023-04-11 DOI:10.1021/acsami.2c22603

Meysam Tayebi, Zohreh Masoumi, Ahmad Tayyebi, Jun-Hwan Kim, Hyungwoo Lee, Bongkuk Seo, Choong-Sun Lim and Hyeon-Gook Kim*,

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Abstract

This study developed a safe and sustainable route for the epoxidation of cyclohexene using water as the source of oxygen at room temperature and ambient pressure. Here, we optimized the cyclohexene concentration, volume of solvent/water (CH₃CN, H₂O), time, and potential on the photoelectrochemical (PEC) cyclohexene oxidation reaction of the α-Fe₂O₃ photoanode. The α-Fe₂O₃ photoanode epoxidized cyclohexene to cyclohexene oxide with a 72.4 ± 3.6% yield and a 35.2 ± 1.6% Faradaic efficiency of 0.37 V vs Fc/Fc⁺ (0.8 V_Ag/AgCl) under 100 mW cm^–2. Furthermore, the irradiation of light (PEC) decreased the applied voltage of the electrochemical cell oxidation process by 0.47 V. This work supplies an energy-saving and environment-benign approach for producing value-added chemicals coupled with solar fuel generation. Epoxidation with green solvents via PEC methods has a high potential for different oxidation reactions of value-added and fine chemicals.

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α-Fe2O3光阳极上环己烯的光电氧化反应

本研究开发了一种在室温常压下用水作为氧源进行环己烯环氧化反应的安全、可持续的途径。本文优化了环己烯浓度、溶剂/水(CH3CN、H2O)体积、时间和电位对α-Fe2O3光阳极(PEC)环己烯氧化反应的影响。α-Fe2O3光阳极在100 mW cm-2下将环己烯环氧化为环氧环己烯，产率为72.4±3.6%，法拉第效率为0.37 V vs Fc/Fc+ (0.8 VAg/AgCl)，为35.2±1.6%。此外，光的照射使电化学电池氧化过程的外加电压降低了0.47 V。本研究为太阳能发电与高附加值化学品的生产提供了一条节能环保的途径。绿色溶剂环氧化在高附加值和精细化学品的不同氧化反应中具有很高的应用潜力。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.