Abstract Facile synthesis of ZnO/GdCoO3 nanocomposites in a two-phase system utilizing Myristica fragrans leaf extracts (MFE) assisted by a high-speed stirring method has been reported. The amine functional group was reported in MFE, confirming the presence of alkaloids. ZnO/GdCoO3 exhibits the combination phase of the typical diffraction peak of both ZnO and GdCoO3. The calculated bandgap value of nanocomposites was found to be 1.99 eV. The particle size of ZnO/GdCoO3 nanocomposites was obtained in the range of 34–58 nm. The photocatalytic activity was evaluated for dyes degradation under visible light illumination. Within 120 min, ZnO/GdCoO3 nanocomposites can degrade the malachite green (MG) as a model of dye with an efficiency of 92.4%. Importantly, ZnO and GdCoO3 display a synergetic effect in a nanocomposite structure as an efficient photocatalyst for dyes degradation.

中文翻译：

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ZnO/GdCoO3纳米复合材料的简便合成、表征及其在可见光下的光催化活性

摘要 已经报道了利用肉豆蔻叶提取物 (MFE) 在高速搅拌方法的辅助下，在两相系统中轻松合成 ZnO/GdCoO3 纳米复合材料。在 MFE 中报告了胺官能团，证实了生物碱的存在。ZnO/GdCoO3 表现出 ZnO 和 GdCoO3 的典型衍射峰的组合相。纳米复合材料的计算带隙值为 1.99 eV。ZnO/GdCoO3 纳米复合材料的粒径范围为 34-58 nm。在可见光照射下评估染料降解的光催化活性。在 120 分钟内，ZnO/GdCoO3 纳米复合材料可以以 92.4% 的效率降解孔雀石绿 (MG) 作为染料模型。重要的，