In the current work, we have doped g-C₃N₄ (GCN), a conjugated polymer based on heptazine-group with phosphorous and synthesized phosphorous doped g-C₃N₄ (PCN) has been coupled with CNT to enhance its photodegradation activity. Herein, CNT/PCN nanocomposites (having different CNT wt% i.e. 0.01, 0.02 and 0.03) were successfully fabricated via straight forward sonochemical method while GCN and PCN were prepared through direct thermal polycondensation method for Imidacloprid (IMI) pesticide degradation. Photodegradation activity of nanocomposite was enormously affected by doping but more significantly by nature of CNT content and addition of H₂O₂. EIS and PL analysis confirmed enhanced photogenerated charge carriers separation in CNT/PCN nanocomposite than GCN and PCN. Through BET analysis increase in surface area (S_BET) of CNT/PCN nanocomposite was observed than PCN (2.8401 m² g ^− 1 to 14.0294 m² g ^− 1). Photodegradation processes follow pseudo-first order kinetics as R² values were attained between 0.95–0.98. Synthesized 0.02 wt% CNT/PCN and 0.02 wt% CNT/PCN/H₂O₂ nanocomposite (without H₂O₂ and with H₂O₂) exhibited superior IMI photodegradation efficiency i.e. 93% and 97% respectively, than other photocatalysts (GCN, PCN, 0.01 wt% CNT/PCN, 0.03 wt% CNT/PCN, GCN/H₂O₂, PCN/H₂O₂, 0.01 wt% CNT/PCN/H₂O₂, 0.03 wt% CNT/PCN/H₂O₂) after visible light illumination. The most Plausible photocatalytic mechanism was also illustrated stipulating significance of h⁺, •O₂⁻reactive species for CNT/PCN nanocomposite and •OH radicals for CNT/PCN/H₂O₂ nanocomposite in photodegradation process. Furthermore, antimicrobial and cytotoxic studies revealed that CNT/PCN confers antibacterial activity but do not cause harm to normal human cells.

在当前的工作中，我们已经掺杂了gC ₃ N ₄（GCN），这是一种基于庚嗪基团与磷共轭的聚合物，合成的磷掺杂的gC ₃ N ₄（PCN）已与CNT结合以增强其光降解活性。本文中，通过直接声波化学方法成功制备了CNT / PCN纳米复合材料（具有不同的CNT wt％，即0.01、0.02和0.03），而通过直接热缩聚方法制备了吡虫啉（IMI）农药降解的GCN和PCN。纳米复合材料的光降解活性受掺杂影响很大，但受CNT含量和H ₂ O _2的添加影响更大。。EIS和PL分析证实，与GCN和PCN相比，CNT / PCN纳米复合材料中光生载流子的分离增强。通过BET分析，观察到CNT / PCN纳米复合材料的_表面积（S _BET）比PCN（2.8401 m ² g  ^{-  1}至14.0294 m ² g  ^{-  1}）增加。光降解过程遵循拟一级反应动力学，因为R ²值在0.95-0.98之间。合成的0.02 wt％CNT / PCN和0.02 wt％CNT / PCN / H ₂ O ₂纳米复合材料（无H ₂ O ₂和H ₂ O ₂）与其他光催化剂（GCN，PCN，0.01 wt％CNT / PCN，0.03 wt％CNT / PCN，GCN / H ₂ O ₂，PCN / H ₂ O ₂， 0.01重量％的CNT / PCN / H ₂ ö ₂，0.03重量％的CNT / PCN / H ₂ ö ₂）后可见光照明。还示出的最可能的光催化机理的规定意义ħ ⁺，•Ø ₂ ^-为CNT / PCN纳米复合材料和•OH自由基为CNT / PCN /反应性物质ħ ₂ ö ₂纳米复合材料的光降解过程。此外，抗菌和细胞毒性研究表明，CNT / PCN具有抗菌活性，但不会对正常人细胞造成伤害。