Abstract Nowadays, hybrid photocatalysts are gaining importance due to their improved photocatalytic activity. In the present work, Ag2CO3 was integrated phosphorous and sulphur co-doped g-C3N4 (PSGCN) photocatalyst (Ag2CO3/PSGCN) to minimize the recombination of photogenerated electron-hole pair. The co-doping resulted in band gap lowering in GCN leading to more visible light activity. Successful formation of well dispersed Ag2CO3/PSGCN suspension in water was established by zeta potential and Tyndall effect experiments. Phosphorous and sulphur co-doping in g-C3N4 resulted lowering of optical band gap that enhanced its photodegradation ability under visible light. The reduction in photogenerated electron-hole pair recombination was confirmed by photoluminescence and electrochemical impedance analysis. The photodegradation of 2, 4, dinitrophenol (DNP) followed pseudo first order kinetics and enhanced photocatalytic activity was due to semiconductor heterojunction for effective separation of electron–hole pair. Holes and hydroxyl radicals were two main oxidative species responsible for photodegradation of DNP into non-toxic products. COD, HPLC and LC-MS investigations were used to investigate the degradation fragment during DNP mineralization. Ag2CO3/PSGCN nanocomposite revealed high stability and recycle efficiency substantial for ten catalytic cycles.

中文翻译：

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在模拟废水中使用负载 Ag2CO3 的磷和硫共掺杂石墨氮化碳纳米片的可见光辅助光降解 2,4-二硝基苯酚

摘要 如今，杂化光催化剂由于其改进的光催化活性而变得越来越重要。在目前的工作中，Ag2CO3 是一种集成的磷和硫共掺杂 g-C3N4（PSGCN）光催化剂（Ag2CO3/PSGCN），以最大限度地减少光生电子 - 空穴对的复合。共掺杂导致 GCN 带隙降低，导致更多的可见光活性。通过 zeta 电位和廷德尔效应实验，成功地在水中形成了分散良好的 Ag2CO3/PSGCN 悬浮液。g-C3N4 中磷和硫的共掺杂导致光学带隙降低，增强了其在可见光下的光降解能力。通过光致发光和电化学阻抗分析证实了光生电子-空穴对复合的减少。2, 4, 的光降解 二硝基苯酚（DNP）遵循拟一级动力学，增强的光催化活性是由于半导体异质结有效分离电子 - 空穴对。空穴和羟基自由基是负责将 DNP 光降解为无毒产物的两种主要氧化物质。COD、HPLC 和 LC-MS 研究用于研究 DNP 矿化过程中的降解片段。Ag2CO3/PSGCN 纳米复合材料在十个催化循环中表现出很高的稳定性和循环效率。HPLC 和 LC-MS 研究用于研究 DNP 矿化过程中的降解片段。Ag2CO3/PSGCN 纳米复合材料在十个催化循环中表现出很高的稳定性和循环效率。HPLC 和 LC-MS 研究用于研究 DNP 矿化过程中的降解片段。Ag2CO3/PSGCN 纳米复合材料在十个催化循环中表现出很高的稳定性和循环效率。