Bifunctional Electrolyzation for Simultaneous Organic Pollutant Degradation and Hydrogen Generation,ACS ES&T Engineering

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Bifunctional Electrolyzation for Simultaneous Organic Pollutant Degradation and Hydrogen Generation
ACS ES&T Engineering ( IF 7.4 ) Pub Date : 2021-07-19 , DOI: 10.1021/acsestengg.1c00173
Hehe Qin _{1,

2} , Ziwei Ye _{1,

2} , Xiaojie Wei _{1,

2} , Xi Liu ₃ , Xiangyun Liu _{1,

2} , Jinhong Fan _{1,

2} , Zhenhai Wen ₃ , Shun Mao _{1,

2}

Affiliation

Smart combining of electrooxidation of organic pollutant and electrocatalytic hydrogen evolution in a single reaction system is a promising solution for simultaneous wastewater treatment and renewable energy generation. Herein, we report a bifunctional electrolyzer with NiMoO₄ and its reduced derivative as the anode and the cathode for the phenol oxidation reaction (POR) and the hydrogen evolution reaction (HER), respectively. The anode shows high efficiency in phenol degradation, in which the direct oxidation by ^•OH on the anode surface is responsible for the POR. The cathode exhibits prominent HER performance with 67 mV overpotential at 10 mA/cm² and strong resistance to the poison effect from phenol degradation intermediates. It is demonstrated that the NiMoO₄-based catalysts can be readily used as highly efficient and robust electrodes for simultaneous phenol degradation and H₂ generation. Such a bifunctional electrolyzation system opens a new avenue of advanced technologies for wastewater treatment and renewable energy production.

中文翻译：

双功能电解同时降解有机污染物和制氢

有机污染物的电氧化和电催化析氢在单一反应系统中的智能结合是同步废水处理和可再生能源发电的有前途的解决方案。在此，我们报道了一种双功能电解槽，其中 NiMoO ₄及其还原衍生物分别作为苯酚氧化反应 (POR) 和析氢反应 (HER) 的阳极和阴极。阳极在苯酚降解方面表现出高效率，其中^• OH 在阳极表面的直接氧化是 POR 的原因。阴极表现出突出的 HER 性能，在 10 mA/cm ^{2 时}具有 67 mV 的过电位对苯酚降解中间体的毒害作用有很强的抵抗力。结果表明，基于NiMoO ₄的催化剂可以很容易地用作高效且坚固的电极，用于同时进行苯酚降解和H ₂生成。这种双功能电解系统为废水处理和可再生能源生产开辟了一条先进技术的新途径。

更新日期：2021-09-10

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