Abstract In the present study, well designed visible light active SmVO4/g-C3N4 (SM/CN) nanocomposite was fabricated by the facile hydrothermal method without using any templates or surfactants. The phase structure, surface morphology, and optical property of as-prepared samples were characterized by various spectroscopic and microscopic techniques like XRD, FT-IR, SEM, TEM, XPS, UV–Vis DRS, and EIS analysis. The photocatalytic activity of as-synthesized SM/CN nanocomposite was estimated for the removal of hazardous chloramphenicol (CP) drug and amaranth dye in aqueous solution under the irradiation of visible light. Fortunately, the UV–Visible spectroscopy studies revealed that the SM/CN nanocatalyst shows excellent photocatalytic activity towards the degradation of CP drug and amaranth dye with 94.35 and 99.11% efficiency respectively. The photocatalytic activity of SM/CN nanocatalyst was ascribed to the separation of photoinduced charge career. By employing trapping experiments using various scavengers the plausible mechanism of the photocatalytic activity of SM/CN nanocatalyst was proved. The present protocols findings open up a new platform for the metal-free g-C3N4 decorated photocatalyst for an efficient candidate for the removal of organic pollutants from the environment.

中文翻译：

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SmVO4修饰的g-C3N4纳米复合材料光催化降解危险氯霉素药物和苋菜红染料的研究

摘要 在本研究中，设计良好的可见光活性 SmVO4/g-C3N4（SM/CN）纳米复合材料通过简便的水热法制备，不使用任何模板或表面活性剂。通过XRD、FT-IR、SEM、TEM、XPS、UV-Vis DRS和EIS分析等各种光谱和显微技术对制备的样品的相结构、表面形貌和光学性质进行了表征。评估了合成的 SM/CN 纳米复合材料的光催化活性，用于在可见光照射下去除水溶液中的有害氯霉素 (CP) 药物和苋菜红染料。幸运的是，紫外-可见光谱研究表明，SM/CN 纳米催化剂对 CP 药物和苋菜红染料的降解表现出优异的光催化活性，效率分别为 94.35% 和 99.11%。SM/CN纳米催化剂的光催化活性归因于光生电荷的分离。通过使用各种清除剂的捕获实验，证明了 SM/CN 纳米催化剂光催化活性的合理机制。本协议的研究结果为无金属 g-C3N4 装饰的光催化剂开辟了一个新平台，作为从环境中去除有机污染物的有效候选者。