Novel binary coupled 2D/1D g-C₃N₄/CaTiO₃ composite photocatalysts with face-to-face contact were synthesized by a solvothermal and calcination method. The properties of g-C₃N₄/CaTiO₃ composites were characterized by XRD, SEM, TEM, BET, UV–vis/DRS, etc. The beneficial band position tuning via coupling g-C₃N₄ with CaTiO₃, and its 2D/1D face-to-face contacted pattern transfer electrons rapidly and retard photogenerated electrons-holes recombination. The photocatalytic ability was evaluated by using crystal violet (CV) and malachite green (MG). The as-prepared g-C₃N₄/2CTO sample shows the highest photocatalytic activity, and the degradation rate of CV and MG can reach up to 99.76% and 95.02% under simulate sunlight owing to the impressive synergic effect between 2D/1D g-C₃N₄/CaTiO₃ face-to-face contact pattern. The free radical scavenging experiments demonstrate that the $·\mathrm{O}{}_2^{-}$ and h⁺ are the main active species. Further, the degradation intermediates of CV and MG detected by GC–MS found both containing phenol, 2,2-Methylenebis(6-Tert-Butyl-4-Methylphenol) (MTBM). Hence, they may have a similar degradation pathway, which provided a significant guideline for the degradation of triphenylmethane dyes. Our prepared novel 2D/1D face-to-face contact pattern nanocomposite is expected to be a fresh scheme for high-efficiency refractory pollutants degradation under sunlight.

通过溶剂热和煅烧法合成了新型的面对面接触的二元偶联的2D / 1D gC ₃ N ₄ / CaTiO ₃复合光催化剂。用XRD，SEM，TEM，BET，UV-vis / DRS等对gC ₃ N ₄ / CaTiO ₃复合材料的性能进行了表征。gC ₃ N ₄与CaTiO ₃及其2D / 1D的耦合能带位置调节面对面接触的图案可快速转移电子，并阻止光生电子与空穴的复合。通过使用结晶紫（CV）和孔雀石绿（MG）评估光催化能力。准备好的gC ₃ N ₄/ 2CTO样品显示出最高的光催化活性，由于2D / 1D gC ₃ N ₄ / CaTiO ₃面对面的协同作用，在模拟阳光下CV和MG的降解率分别可达99.76％和95.02％。脸部接触模式。自由基清除实验表明$·\mathrm{Ø}{}_{\mathrm{2个}}^{-}$和h ⁺是主要的活性物种。此外，通过GC-MS检测到的CV和MG降解中间体都含有苯酚，2,2-亚甲基双（6-叔丁基-4-甲基苯酚）（MTBM）。因此，它们可能具有相似的降解途径，这为三苯基甲烷染料的降解提供了重要的指导。我们准备的新型2D / 1D面对面接触图案纳米复合材料有望成为一种在阳光下高效降解难处理污染物的新方案。