Bi-rich BixOyBrz-based photocatalysts for energy conversion and environmental remediation: A review

作者：Akshay Chawla, Anita Sudhaik, Sonu Sonu, Pankaj Raizada, Tansir Ahamad, Quyet V. Le, Van‐Huy Nguyen, Sourbh Thakur, Ajay Kumar Mishra, Rangabhashiyam Selvasembian, Pardeep Singh · 发表于：Coordination Chemistry Reviews · 年份：2023 · DOI：10.1016/j.ccr.2023.215246 · 被引用次数：117 · 研究领域：Advanced Photocatalysis Techniques、Perovskite Materials and Applications、Covalent Organic Framework Applications

Recently, BiOX-based (X = F, Cl, Br, I, etc.) photocatalysts have been discovered and used in many energy and environmental applications. However, inadequate reduction activities and positive conduction band minimum (CBM) potential are the main bottlenecks of BiOX. Therefore, a potential solution to addressing such constraints is to adopt a Bi-rich strategy with BiOX photocatalyst. The comprehensive features of Bi-rich Bi x O y Br z led us to select them over all other BiOX. These photocatalysts exhibit perfect band gap in the visible region ≅ 2.8 eV, account top portion of visible light (43–45%), and have rich atomic composition and layered crystal structure (providing large surface area for charge transfer), making them ideal photocatalysts. With their unique properties, the modified Bi-rich Bi x O y Br z is more favorable to addressing environmental and energy conversion concerns. However, fast charge recombination and more positive conduction band of some of the Bi-rich Bi x O y Br z reduce their photocatalytic activity. As a result, the current review offers an in-depth overview of numerous strategies for modifying Bi-rich Bi x O y Br z photocatalysts, such as employing co-catalysts, doping, heterojunction, microstructure regulation, etc. The detailed characteristics of Bi-rich Bi x O y Br z and their synthesis processes are also briefly presented in the proposed review paper. Also, various applications of Bi-rich Bi x O y Br z photocatalysts for pollutant degradation, h...