Akademik Veri Yönetim Sistemi
Journal of Materials Science, cilt.60, sa.34, ss.14908-14937, 2025 (SCI-Expanded)
Photocatalytic carbon dioxide (CO2) reduction harnesses solar energy to transform CO2 into hydrocarbon fuels, offering an alternative to the dwindling reliance on fossil fuels. Recently, black TiO2 (B-TiO2), a widely studied nanomaterial in photocatalysis, has undergone extensive modifications to enhance photocatalytic CO2 reduction. The B-TiO2 exhibits unique properties that make it distinct from others, including its basic external structure, surface functionality, electrochemical, optical, and thermal properties. Extensive studies on B-TiO2 have revealed that although defects, such as Ti3+ and oxygen defects, can enhance photoactivity, their impact is complex and influenced by factors including defect concentration, synthesis conditions, and band structure. This review critically studies recent breakthroughs in B-TiO2-based photocatalysts for CO2 reduction, emphasizing the mechanistic insights into defect engineering, bandgap modulations, and selective product formation. We comprehensively summarize advanced synthesis approaches tailored to optimize light harvesting, CO2 adsorption, and activation. Particular emphasis is placed on strategies, for instance, doping, heterojunction construction, mostly the novel S-scheme that synergistically enhances CO2 reduction. By bridging the gap between materials design and reaction mechanisms, this review highlights the emerging paradigms that redefine the capabilities of B-TiO2 and outlines the current challenges and future opportunities for translating lab-scale success into practical solar fuel production. Our goal is to provide a forward-looking roadmap for the rational development of next-generation B-TiO2 photocatalysts with superior CO2 reduction activity.