Oxygen reduction reaction (ORR) for generating H₂O₂ through green pathways have gained much attention in recent years. Herein, we introduce a piezo‐catalytic approach to obtain H₂O₂ over bismuth oxychloride (BiOCl) through an ORR pathway. The piezoelectric response of BiOCl was directly characterized by piezoresponse force microscopy (PFM). The BiOCl exhibits efficient catalytic performance for generating H₂O₂ (28 μmol h⁻¹) only from O₂ and H₂O, which is above the average level of H₂O₂ produced by solar‐to‐chemical processes. A piezo‐catalytic mechanism was proposed: with ultrasonic waves, an alternating electric field will be generated over BiOCl, which can drive charge carriers (electrons) to interact with O₂ and H₂O, then to form H₂O₂.

中文翻译：

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氧氯化铋通过压电催化过程产生H2O2的氧还原反应

近年来，通过绿色途径产生H ₂ O _2的氧还原反应（ORR）引起了广泛关注。本文中，我们介绍了一种压电催化方法，可通过ORR途径在三氯氧化铋（BiOCl）上获得H ₂ O ₂。BiOCl的压电响应直接由压电响应力显微镜（PFM）表征。BiOCl表现出仅由O ₂和H ₂ O生成H ₂ O ₂（28μmolh ^-1）的有效催化性能，高于H ₂ O ₂的平均水平由太阳化学过程产生的。提出了一种压电催化机制：在超声波作用下，BiOCl上方将产生一个交变电场，该电场可以驱动电荷载流子（电子）与O ₂和H ₂ O相互作用，然后形成H ₂ O ₂。