Recent advances on Bi12O17Cl2-based photocatalysts for energy and environmental application

Abstract

Semiconductor photocatalytic technology is considered a feasible means to confront the current energy crisis and environmental problems. Bi₁₂O₁₇Cl₂ is regarded as a photocatalyst with great potential for application due to its simple synthesis, strong chemical stability, and excellent light absorption capability. However, the limited capacity for visible light absorption and the rapid recombination of photo-generated charge carriers remain the main challenges to its catalytic performance. Consequently, in recent years, researchers have been committed to developing efficient and stable Bi₁₂O₁₇Cl₂-based photocatalysts and have achieved significant advancements in their research. This review aims to comprehensively and systematically introduce the latest research progress and advancements in modification strategies and application fields of Bi₁₂O₁₇Cl₂-based photocatalysts. Initially, the preparation methods and properties of common morphological structures of Bi₁₂O₁₇Cl₂ are systematically discussed. Subsequently, it summarizes and discusses strategies to enhance the photocatalytic activity of Bi₁₂O₁₇Cl₂, including metal loading, non-metallic loading, elemental doping, heterojunction construction, and defect engineering. Subsequently, the applications of Bi₁₂O₁₇Cl₂-based photocatalytic systems in various fields were highlighted in detail. Ultimately, the primary challenges confronted by Bi₁₂O₁₇Cl₂ photocatalysts and emerging development opportunities are centered upon. This review aims to provide readers with a deeper comprehension of this field and to illuminate potential future directions for the advancement of Bi₁₂O₁₇Cl₂-based photocatalysts.