Mn5O8 Nanoparticles as Efficient Water Oxidation Catalysts at Neutral pH

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• 作者：Donghyuk Jeong ; Kyoungsuk Jin ; Sung Eun Jerng ; Hongmin Seo ; Donghun Kim ; Seung Hoon Nahm ; Sun Hee Kim ; Ki Tae Nam
• 刊名：ACS Catalysis
• 出版年：2015
• 出版时间：August 7, 2015
• 年：2015
• 卷：5
• 期：8
• 页码：4624-4628
• 全文大小：373K
• ISSN：2155-5435

文摘

Mn₅O₈ nanoparticles (NPs) were obtained via the controlled oxidation of MnO NPs. The oxygen evolution reaction (OER) properties of Mn₅O₈ NPs were evaluated using cyclic voltammetry (CV). A current density of 5 mA/cm² was reached when 580 mV of overpotential was applied at pH 7.8. Electron paramagnetic resonance (EPR) analysis was conducted to investigate the origin of high OER activity of Mn₅O₈ NPs. From the EPR analysis, Mn³⁺ was found to be involved in the OER process of the Mn₅O₈ materials.