Electrocatalytic Oxygen Reduction to Hydrogen Peroxide: From Homogeneous to Heterogeneous Electrocatalysis,Advanced Energy Materials

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Electrocatalytic Oxygen Reduction to Hydrogen Peroxide: From Homogeneous to Heterogeneous Electrocatalysis
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2020-12-18 , DOI: 10.1002/aenm.202003323
Yulin Wang _{1,

2} , Geoffrey I. N. Waterhouse ₃ , Lu Shang _{1,

2} , Tierui Zhang _{1,

2}

Affiliation

Hydrogen peroxide (H₂O₂) is an environmentally friendly oxidant, finding widespread use across the chemical industry, in sanitation and environmental remediation. Currently, H₂O₂ is manufactured via the anthraquinone process which has a number of disadvantages including nondistributed production, high‐energy consumption, substantial organic by‐product waste, and the need to transport the obtained H₂O₂ to the point‐of‐use. Accordingly, the electrochemical synthesis of H₂O₂ is now attracting a lot of interest as an alternative, cost‐effective, small‐scale, and distributed technology for H₂O₂ manufacture. This review summarizes recent advancements in the development of Homogeneous and Heterogeneous catalysts for electrocatalytic O₂ reduction reaction (ORR) to H₂O₂. The basic principles of the ORR, and methodologies for investigating the ORR to H₂O₂ are first introduced. Next, H₂O₂ production over Homogeneous catalysts is discussed, with a focus on the reaction mechanisms and the factors that influence activity, selectivity, and reaction kinetics. Subsequently, recent breakthroughs in H₂O₂ synthesis over Heterogeneous catalysts, including nonnoble metal‐based nanomaterials, carbon materials, and single‐atom catalysts are described. The latter are given special attention, since they serve as a bridge between Homogeneous catalysis and Heterogeneous catalysis, while also offering excellent performance. Finally, the challenges and opportunities for electrochemical ORR to H₂O₂ are critically discussed.

中文翻译：

电催化氧还原为过氧化氢：从均相到非均相电催化

过氧化氢（H ₂ O ₂）是一种环境友好的氧化剂，在整个化学工业中的卫生和环境修复中得到了广泛的应用。目前，H ₂ O ₂是通过蒽醌工艺制造的，存在许多缺点，包括分布不均，能耗高，有机副产物大量浪费以及需要将所获得的H ₂ O ₂运送到现场。 -用。因此，H的电化学合成₂ ö ₂现在吸引了很大兴趣作为替代，具有成本效益，小规模，并进行H分布式技术₂ ö ₂生产。这篇综述总结了用于电催化O ₂还原反应（ORR）生成H ₂ O ₂的均相和非均相催化剂的最新进展。首先介绍了ORR的基本原理，以及研究ORR对H ₂ O _2的方法。接下来，将讨论在均相催化剂上生产H ₂ O ₂，重点是反应机理和影响活性，选择性和反应动力学的因素。随后，H ₂ O _2的最新突破描述了非均相催化剂（包括基于非贵金属的纳米材料，碳材料和单原子催化剂）上的合成。后者特别受关注，因为它们充当了均相催化和非均相催化之间的桥梁，同时还提供了出色的性能。最后，关键地讨论了电化学ORR制H ₂ O ₂的挑战和机遇。

更新日期：2020-12-18

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