A Review on Bi₂WO₆-Based Materials for Photocatalytic CO₂ Reduction

Photocatalytic reduction of CO₂ (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 (Bi₂WO₆) 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 Bi₂WO₆ to enhance its photocatalytic performance, aiming to achieve superior applications. This review provides a comprehensive review of the latest research progress on Bi₂WO₆ 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 Bi₂WO₆-based materials is introduced for the regulation of its photocatalytic properties. Furthermore, accentuating the extant applications in CO₂ reduction, including metal-Bi₂WO₆, semiconductor-Bi₂WO₆ and carbon-based Bi₂WO₆ 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 Bi₂WO₆-based photocatalysts in PCR.