fig13

Figure 13. (A) Schematic representation of the proposed cascade Z-scheme mechanism of photogenerated charge transfer under visible light for efficient photocatalysis. T refers to (001)TiO₂, which can feasibly be replaced by other wide band gap semiconductors such as SnO₂. (Reproduced with permission^[68]. Copyright 2021, Wiley-VCH); (B) Visible light irradiation for 4h of BVNS, 15CN/BVNS, and 5T-15CN/BVNS for CO₂RR. For yT-xCN/BVNS, x and y represent the mass percentage of CN and T to BVNS, respectively. (Reproduced with permission^[68]. Copyright 2021, Wiley-VCH); (C) Visible light irradiation of BVNS, 15CN/BVNS, and 5T-15CN/BVNS for water splitting. The overall water splitting was carried out with Pt as the cocatalyst and without any sacrificial agents. (Reproduced with permission^[68]. Copyright 2021, Wiley-VCH); (D) Schematic of the synthesis of ultrathin Ti₃C₂ quantum dots anchored TiO₂/C₃N₄ core-shell nanosheets. (Reproduced with permission^[69]. Copyright 2020, Elsevier); (E) PL spectra of the samples of CN,T-CN and T-CN-TC. (Reproduced with permission^[69]. Copyright 2020, Elsevier); (F) Photocatalytic CO₂ reduction performance of T, CN,T-CN, T-CN-TC and CN-TC after irradiation for 1h. (Reproduced with permission^[69]. Copyright 2020, Elsevier); (G) The stability test of CO₂ reduction over T-CN-TC. (Reproduced with permission^[69]. Copyright 2020, Elsevier).