Advanced nanocomposite from silica-fume based MCM-41 and cobalt oxide (Co₃O₄/SF-MCM-41) which precipitated by green techniques in the presences of Pomegranate leaves extract as reducing reagent. The formation of the Co₃O₄/SF-MCM-41composite was confirmed by different studied analytic techniques and applied as novel photocatalyst in the visible light oxidation of Omethoate pesticide. The composite is of stunning surface area (742 m²/g) and low band gap energy value (1.53 eV) which giving it promising photocatalytic performances. It showed highly effective photocatalytic activity which reflected in a complete degradation of 50 mg/L, 100 mg/L, 150 mg/L, 200 mg/L and 250 mg/L of Omethoate after 30 min, 50 min, 80 min, 100 min, and 120 min, respectively using 0.25 g of Co₃O₄/SF-MCM-41. This associated with complete degradation of the detected TOC content within the same time intervals. The detected intermediate organic materials of (CH₃O)₃P(O), (CH₃O)₂P(O)SCH₃, CH₃NHC(O)CH₂SH, CH₃NHC(O)CH₂SCH₃, and NH₂C(O)CH₂SCH₃ were identified as oxidizing products during the degradation steps and all of them were converted into NO₃⁻, SO₄^2-, PO₄^3-, and CO₂ as final products. The composite is of reusability value and the hydroxyl radicals were identified as the controlling radicals during the oxidation process.

由基于硅粉的MCM-41和氧化钴（Co ₃ O ₄ / SF-MCM-41）制成的高级纳米复合材料，在石榴叶提取物的存在下通过绿色技术沉淀该氧化钴作为还原剂。Co ₃ O ₄ / SF-MCM-41复合材料的形成通过不同的研究分析方法得到证实，并作为新型光催化剂用于氧化乐果农药中的可见光。复合材料具有惊人的表面积（742 m ²/ g）和低带隙能量值（1.53 eV），使其具有良好的光催化性能。它显示出高效的光催化活性，反映了30分钟，50分钟，80分钟，100分钟后Omethoate的50 mg / L，100 mg / L，150 mg / L，200 mg / L和250 mg / L的完全降解。分别使用0.25 g Co ₃ O ₄ / SF-MCM-41进行1分钟和120分钟的处理。这与在相同时间间隔内检测到的TOC含量的完全降低有关。检测到的（CH ₃ O）₃ P（O），（CH ₃ O）₂ P（O）SCH ₃，CH ₃ NHC（O）CH ₂ SH，CH ₃ NHC（O）CH ₂中间有机物SCH ₃，和NH ₂ C（O）CH ₂ SCH ₃被鉴定为在降解步骤和它们全部转化成NO氧化产品₃ ^-，SO ₄ ^2-，PO ₄ ^3-和CO ₂作为最终产品。该复合物具有可重复使用的价值，并且在氧化过程中羟基自由基被确定为控制自由基。