Castillo-Cabrera G Xavier, Espinoza-Montero Patricio J, Alulema-Pullupaxi Paulina, Mora José Ramón, Villacís-García Milton H
Escuela de Ciencias Químicas, Pontificia Universidad Católica Del Ecuador, Quito, Ecuador.
Facultad de Ciencias Químicas, Universidad Central Del Ecuador, Quito, Ecuador.
Front Chem. 2022 Jul 11;10:900622. doi: 10.3389/fchem.2022.900622. eCollection 2022.
An important target of photoelectrocatalysis (PEC) technology is the development of semiconductor-based photoelectrodes capable of absorbing solar energy (visible light) and promoting oxidation and reduction reactions. Bismuth oxyhalide-based materials BiOX (X = Cl, Br, and I) meet these requirements. Their crystalline structure, optical and electronic properties, and photocatalytic activity under visible light mean that these materials can be coupled to other semiconductors to develop novel heterostructures for photoelectrochemical degradation systems. This review provides a general overview of controlled BiOX powder synthesis methods, and discusses the optical and structural features of BiOX-based materials, focusing on heterojunction photoanodes. In addition, it summarizes the most recent applications in this field, particularly photoelectrochemical performance, experimental conditions and degradation efficiencies reported for some organic pollutants (e.g., pharmaceuticals, organic dyes, phenolic derivatives, etc.). Finally, as this review seeks to serve as a guide for the characteristics and various properties of these interesting semiconductors, it discusses future PEC-related challenges to explore.
光电催化（PEC）技术的一个重要目标是开发基于半导体的光电极，该光电极能够吸收太阳能（可见光）并促进氧化还原反应。卤氧化铋基材料BiOX（X = Cl、Br和I）满足这些要求。它们的晶体结构、光学和电子特性以及在可见光下的光催化活性意味着这些材料可以与其他半导体耦合，以开发用于光电化学降解系统的新型异质结构。本文综述了可控合成BiOX粉末的方法，并讨论了BiOX基材料的光学和结构特征，重点关注异质结光阳极。此外，总结了该领域的最新应用，特别是一些有机污染物（如药物、有机染料、酚类衍生物等）的光电化学性能、实验条件和降解效率。最后，由于本综述旨在作为这些有趣半导体的特性和各种属性的指南，因此讨论了未来与PEC相关的待探索挑战。
