The presence of imidacloprid in surface waters has raised major environmental concern worldwide. Herein, for degradation and mineralization of imidacloprid, hybrid nano-catalysts g-C₃N₄/ZnO (< 20 nm) with different compositions were synthesized and characterized. Under UV-C light intensity of 15 W/m² and at pH 7, degradation was observed to be highest (95.6%) for g-C₃N₄/ZnO (20:80) in comparison to bare ZnO (80.6%) and g-C₃N₄ (84.1%) nano-catalysts in just 35 min. The remarkable increase in photocatalytic activity was due to improved surface area (42.87 m²g⁻¹), lower bandgap (2.76 eV) and lower photoluminescence intensity which resulted in lowering the recombination rate of electron–hole charge carriers. Further, higher zeta potential (+28 mV) at pH 7 might have increased intimacy in positively charged catalyst and high electron rich aromatic ring of imidacloprid which enhanced the degradation. The study was extended to analyze the reaction intermediates using LC–MS. The degradation mechanism revealed the formation of by-products such as ethylenediamine, nitroamine, acrolein, CO₂ and H₂O. Overall, g-C₃N₄/ZnO (20:80) was found to be a promising catalyst for the degradation of imidacloprid at neutral pH.

吡虫啉在地表水中的存在引起了全世界主要的环境关注。在此，为了降解吡虫啉和矿化，合成并表征了具有不同组成的杂化纳米催化剂gC ₃ N ₄ / ZnO（<20 nm）。在UV-C光强度为15 W / m ²且在pH为7的情况下，与裸露的ZnO（80.6％）和gC相比，gC ₃ N ₄ / ZnO（20:80）的降解最高（95.6％）。只需35分钟即可获得₃ N ₄（84.1％）纳米催化剂。光催化活性的显着提高归因于表面积的改善（42.87 m ² g ^-1），较低的带隙（2.76 eV）和较低的光致发光强度，导致电子-空穴载流子的复合率降低。此外，在pH 7时较高的zeta电位（+28 mV）可能会使带正电荷的催化剂和吡虫啉的高电子富集芳环的亲密性增强，从而增强降解。该研究扩展到使用LC-MS分析反应中间体。降解机理揭示的形成副产物，例如乙二胺，硝胺，丙烯醛，CO ₂和H ₂ O.总的来说，GC ₃ Ñ ₄ /氧化锌（20:80）被发现是吡虫啉降解的有前途的催化剂在中性pH下。