A Review on Bi 2 WO 6 ‐Based Materials for Photocatalytic CO 2 Reduction

Abstract Photocatalytic reduction of CO 2 (PCR) technology offers the capacity to transmute solar energy into chemical energy through an eco‐friendly and efficacious process, concurrently facilitating energy storage and carbon diminution, this innovation harbors significant potential for mitigating energy shortages and ameliorating environmental degradation. Bismuth tungstate (Bi 2 WO 6 ) is distinguished by its robust visible light absorption and distinctive perovskite‐type crystal architecture, rendering it highly efficiency in PCR. In recent years, numerous systematic strategies have been investigated for the synthesis and modification of Bi 2 WO 6 to enhance its photocatalytic performance, aiming to achieve superior applications. This review provides a comprehensive review of the latest research progress on Bi 2 WO 6 based materials in the field of photocatalysis. Firstly, outlining the fundamental principles, associated reaction mechanisms and reduction pathways of PCR. Then, the synthesis strategy of Bi 2 WO 6 ‐based materials is introduced for the regulation of its photocatalytic properties. Furthermore, accentuating the extant applications in CO 2 reduction, including metal‐Bi 2 WO 6 , semiconductor‐Bi 2 WO 6 and carbon‐based Bi 2 WO 6 composites etc. while concludes with an examination of the future landscape and challenges faced. This review hopes to serve as an effective reference for the continuous improvement and implementation of Bi 2 WO 6 ‐based photocatalysts in PCR.