TiO_2-x/g-C₃N₄/CdS ternary heterojunctions are fabricated through thermal polymerization-chemical bath deposition combined with in-situ solid-state chemical reduction approach. The prepared materials are characterized by X-ray diffraction, Fourier transform infrared spectra, scanning electron microscopy, transmission electron microscopy, nitrogen adsorption-desorption, and X-ray photoelectron spectroscopy. The results show that the ternary heterojunctions are formed successfully and CdS quantum dots (QDs) and TiO₂ are anchored on surface of g-C₃N₄ nanosheets simultaneously. The visible-light-driven photocatalytic degradation ratio of Bisphenol A and hydrogen production rate are up to 95% and ∼254.8 μmol h⁻¹, respectively, which are several times higher than that of pristine TiO₂. The excellent visible-light-driven photocatalytic activity can be ascribed to the synergistic effect of TiO_2−x, g-C₃N₄ and CdS QDs which extend the photoresponse to visible light region and favor the spatial separation of photogenerated charge carriers.

TiO _2-x / gC ₃ N ₄ / CdS三元异质结是通过热聚合-化学浴沉积结合原位固态化学还原方法制备的。所制备的材料通过X射线衍射，傅立叶变换红外光谱，扫描电子显微镜，透射电子显微镜，氮吸附-解吸和X射线光电子能谱进行表征。结果表明，三元异质结形成成功，CdS量子点（QDs）和TiO ₂固定在gC ₃ N ₄表面。纳米片同时。双酚A的可见光驱动的光催化降解率和产氢率分别高达95％和〜254.8μmolh ^-1，是原始TiO _2的几倍。出色的可见光驱动的光催化活性可以归因于TiO _2x，gC ₃ N ₄和CdS QD的协同作用，它们将光响应扩展到可见光区域，有利于光生载流子的空间分离。