State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, P. R. China.
University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
ChemSusChem. 2018 Feb 9;11(3):527-531. doi: 10.1002/cssc.201702405.
Oxygen reduction reaction (ORR) for generating H O through green pathways have gained much attention in recent years. Herein, we introduce a piezo-catalytic approach to obtain H O 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 H O (28 μmol h ) only from O and H O, which is above the average level of H O 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 O and H O, then to form H O .
近年来，通过绿色途径生成 H2O 的氧还原反应（ORR）引起了广泛关注。在此，我们通过 ORR 途径介绍了一种在 BiOCl 上获得 H2O 的压电催化方法。BiOCl 的压电响应通过压电力显微镜（PFM）直接进行了表征。BiOCl 仅通过 O 和 H2O 即可高效催化生成 H2O（28 μmol·h-1），这高于太阳能到化学过程产生的 H2O 的平均水平。提出了一种压电催化机制：在超声波的作用下，BiOCl 上将产生交变电场，从而可以驱动载流子（电子）与 O 和 H2O 相互作用，然后形成 H2O。
