BiOCl/CdS/g-C₃N₄ heterostructure and related photcatalysts have been designed successfully by decorating the 2D organic graphitic carbon nitride (g-C₃N₄) and inorganic bismuth oxychloride (BiOCl) semiconductor nanosheets with cadmium sulphide (CdS) nanoparticles. We have employed solvothermal cum co-precipitation method to fabricate the photocatalysts. The morphologies, optical and electronic properties of the photocatalysts have been studied by spectroscopic and microscopic methods. The BiOCl/CdS/g-C₃N₄ photcatalyst shows remarkably high visible-light-driven photocatalytic activity for the degradation of rhodamine B (RhB) with first order rate constant of 0.09 min⁻¹. The observed photodegradation activity is of the order, BiOCl/CdS/g-C₃N₄ > CdS/g-C₃N₄ > BiOCl/g-C₃N₄ > g-C₃N₄. Radical scavenging experiments show that superoxide radicals (${{}^{•-}O}_2$) and holes ($h^{+}$) are more active species in the photodegradation of RhB than hydroxyl radicals (${}^{•}OH$). This study reveals that morphology and synergic interactions of BiOCl and g-C₃N₄ nanosheets with CdS nanoparticles are crucial to separate the photogenerated electron-hole pairs and enhance the photocatalytic activity for RhB degradation.

BiOCl / CdS / gC ₃ N ₄异质结构和相关的光催化剂已通过用硫化镉（CdS）纳米粒子装饰2D有机石墨碳氮化物（gC ₃ N ₄）和无机氯氧化铋（BiOCl）半导体纳米片而成功设计。我们已经采用溶剂热和共沉淀法来制备光催化剂。通过光谱和显微镜方法研究了光催化剂的形态，光学和电子性质。BiOCl / CdS / gC ₃ N ₄催化剂对罗丹明B（RhB）的降解表现出很高的可见光驱动光催化活性，其一级速率常数为0.09 min ^-1。观察到的光降解活性的顺序为BiOCl / CdS / gC ₃ N ₄  > CdS / gC ₃ N ₄  > BiOCl / gC ₃ N ₄  > gC ₃ N ₄。自由基清除实验显示，超氧自由基（${{}^{•-}Ø}_{\mathrm{2个}}$）和孔（$H^{+}$）在RhB的光降解中比羟基自由基更活泼。${}^{•}ØH$）。这项研究表明，BiOCl和gC ₃ N ₄纳米片与CdS纳米粒子的形态和协同相互作用对于分离光生电子-空穴对和增强RhB降解的光催化活性至关重要。