This study illustrates the usage of as-synthesized rGO with different Ag doping ratios as a new designed nanocomposite for enhancing the photodegradation of 2,4 dinitrophenol in aqueous solution under UV-light irradiation. The Ag@rGO nanocomposite was successfully fabricated by a simple and eco-friendly method without deploying any hazardous agent. The synthesized nanocomposite was characterized by SEM, EDX, TEM and XRD to demonstrate the morphological, size distribution, elemental compositions, phase structure and crystalline nature of as-synthesized nanocomposites. The results showed that, the optimum condition for high removal efficiency of 2,4 DNP wad achieved at pH 4–5, 60 min contact time, 0.4 g/L photocatalyst dose and 50 mg/L 2,4 DNP concentration. Furthermore, Ag@rGO 7% showed high degradation efficiency than other prepared nanocomposites. The adsorption isotherm obeyed both Langmuir and Freundlich models with R² almost > 0.99, while it follows the pseudo-second order kinetics model with C_e values ranging between 11.44 and 25.84 mg/L and corresponding R² > 0.99.

本研究说明了使用具有不同 Ag 掺杂比的合成 rGO 作为一种新设计的纳米复合材料，用于在紫外光照射下增强水溶液中 2,4 二硝基苯酚的光降解。Ag@rGO 纳米复合材料是通过一种简单且环保的方法成功制造的，无需部署任何有害物质。合成的纳米复合材料通过 SEM、EDX、TEM 和 XRD 进行表征，以证明合成的纳米复合材料的形态、尺寸分布、元素组成、相结构和结晶性质。结果表明，在 pH 4-5、60 分钟接触时间、0.4 g/L 光催化剂剂量和 50 mg/L 2,4 DNP 浓度下，2,4 DNP wad 达到高去除效率的最佳条件。此外，Ag@rGO 7% 表现出比其他制备的纳米复合材料高的降解效率。R ²几乎 > 0.99，而它遵循伪二级动力学模型，C _e值范围在 11.44 和 25.84 mg/L 之间，相应的R ²  > 0.99。