Abstract Herein, we fabricated activated carbon (AC) immobilized WO3 nanocuboids (AC-WO3) as an efficient and green photocatalyst via simple hydrothermal method. AC-WO3 shows great potential for the removal of stable rhodamine B (RhB) dye in aqueous solution under visible light. The large surface area of the AC-WO3 nanocomposites brought numerous active sites for the adsorption, consequently, for photodegradation of RhB dye. The characterization results established that the prepared material has crystalline orthorhombic structure, nanosized cuboids shape like morphology, visible light responsive nature, thermo stability and smaller particle size with high specific surface area. Adsorption isotherm studies revealed homogeneous surface adsorption with Langmuir adsorption isotherm. Study on adsorption kinetics confirms that adsorption of dye on AC-WO3 follows the second order kinetic model. AC-WO3 nanocomposites exhibit enhancing synergistic effect of adsorption and photodegradation ability for removing RhB in aqueous solution.

中文翻译：

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活性炭固定化 WO3 纳米立方体：吸附/光催化协同作用增强去除有机污染物

摘要 在此，我们通过简单的水热法制备了活性炭 (AC) 固定化 WO3 纳米长方体 (AC-WO3) 作为一种高效、绿色的光催化剂。AC-WO3 显示出在可见光下去除水溶液中稳定的罗丹明 B (RhB) 染料的巨大潜力。AC-WO3 纳米复合材料的大表面积为吸附带来了许多活性位点，因此，用于 RhB 染料的光降解。表征结果表明，所制备的材料具有晶体正交结构、纳米长方体形状、可见光响应性、热稳定性和较小的颗粒尺寸和高比表面积。吸附等温线研究揭示了具有朗缪尔吸附等温线的均匀表面吸附。吸附动力学研究证实，染料在 AC-WO3 上的吸附遵循二级动力学模型。AC-WO3纳米复合材料在去除水溶液中的RhB方面表现出增强吸附和光降解能力的协同作用。