Isotype Heterojunction-Boosted CO2 Photoreduction to CO
Chaogang Ban, Youyu Duan, Yang Wang, Jiangping Ma, Kaiwen Wang, Jiazhi Meng, Xue Liu, Cong Wang, Xiaodong Han, Guozhong Cao, Li‐Yong Gan, Xiaoyuan Zhou
Abstract
Abstract Photocatalytic conversion of CO 2 to high-value products plays a crucial role in the global pursuit of carbon–neutral economy. Junction photocatalysts, such as the isotype heterojunctions, offer an ideal paradigm to navigate the photocatalytic CO 2 reduction reaction (CRR). Herein, we elucidate the behaviors of isotype heterojunctions toward photocatalytic CRR over a representative photocatalyst, g-C 3 N 4 . Impressively, the isotype heterojunctions possess a significantly higher efficiency for the spatial separation and transfer of photogenerated carriers than the single components. Along with the intrinsically outstanding stability, the isotype heterojunctions exhibit an exceptional and stable activity toward the CO 2 photoreduction to CO. More importantly, by combining quantitative in situ technique with the first-principles modeling, we elucidate that the enhanced photoinduced charge dynamics promotes the production of key intermediates and thus the whole reaction kinetics.