Preparation and Characterization of ZnTiO₃/g‐C₃N₄ Heterojunction Composite Catalyst with Highly Enhanced Photocatalytic CO₂ Reduction Performance

Herein, well-crystallized ZnTiO3 particles are first prepared by hydrothermal method. A series of S-scheme heterojunction photocatalysts ZnTiO3/g-C3N4 (referred to as ZTO/CN) with different mass ratios synthesized successfully doping in g-C3N4 precursors and loading onto nanosheets calcination. It is clearly found that the loaded on X-ray diffractometer, energy-dispersive spectra, high-resolution transmission electron microscopy images. Moreover, specific surface area 3.0% ZTO/CN higher than pure g-C3N4. Using triethanolamine hole sacrificial agent, highest CO H2 yields achieved composite catalyst under xenon lamp irradiation for 1 h. The generation rates reach 15.19 5.77 μmol g−1 h−1, respectively, which 2.9 4.1 times show a trend increasing then decreasing content, due fact excess can lead reduction effective interface between g-C3N4, transfer separation efficiency photogenerated electrons holes thus reducing photocatalytic activity.