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Hydrogen peroxide (H₂O₂) is a crucial chemical applied in various industry sectors. However, the current industrial anthraquinone process for H₂O₂ synthesis is carbon-intensive. With sunlight and renewable electricity as energy inputs, photocatalysis and electrocatalysis have great potential for green H₂O₂ production from oxygen (O₂) and water (H₂O). Herein, we review the advances in pairing two-electron O₂ reduction and two-electron H₂O oxidation reactions for dual-pathway H₂O₂ synthesis. The basic principles, paired redox reactions, and catalytic device configurations are introduced initially. Aligning with the energy input, the latest photocatalysts, electrocatalysts, and photo-electrocatalysts for dual-pathway H₂O₂ production are discussed afterward. Finally, we outlook the research opportunities in the future. This minireview aims to provide insights and guidelines for the broad community who are interested in catalyst design and innovative technology for on-site H₂O₂ synthesis.
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Sun et al. (2024) studied this question.
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