This paper presents a method for the synthesis of a nanocomposite based on layered double hydroxide (Zn–Al LDH) on the surface of which Ag₂O (LDH-Ag₂O) and Cu₂O (LDH-Cu₂O) nanoparticles were deposited. A deep eutectic solvent (DES) (LDH-Ag₂O-NDES, LDH-Cu₂O-NDES) was used to obtain Ag/Cu metal oxides (Me₂O). DES acted as a reaction medium and reductant, which allowed Me₂O to be obtained in higher yields (>99 %), compared to the process carried out in water (75 % for Cu₂O). The Ag₂O or Cu₂O-modified nanocomposite presented higher photocatalytic activity towards trypan blue under UV, visible artificial light and sunlight compared to Zn–Al LDH. The band gap energies changed from 3.36 eV for pure LDH to 2.52 and 2.69 eV for LDH-Ag₂O and LDH-Cu₂O obtained in water and 2.39 and 2.36 eV for their counterparts obtained in DES. The degradation efficiency of trypan blue by LDH-Cu₂O-DES was the highest among the materials tested, with a degradation efficiency of 92.80 % after 120 min, at C₀ = 200 mg/dm³. At the same time, the incorporation of Ag₂O and Cu₂O into the LDH structure gave the material bioactive properties (MIC = 39 and 156 mg/dm³), thus confirming the achievement of a multifunctional material that can be used in the future for the treatment of water from organic and bioactive contaminants.

本文提出了一种基于层状双氢氧化物（Zn-Al LDH）的纳米复合材料的合成方法，其中Ag ₂ O（LDH-Ag ₂ O）和Cu ₂ O（LDH-Cu ₂ O）纳米粒子是在其表面上沉积的。存入。使用低共熔溶剂(DES)(LDH-Ag ₂ O-NDES、LDH-Cu _{2 O-NDES)来获得Ag/Cu金属氧化物(Me 2} O)。 DES 充当反应介质和还原剂，与在水中进行的过程（Cu ₂ O 为 75% ）相比，这使得能够以更高的产率（>99%）获得 Me _{2 O。}与Zn-Al LDH相比，Ag ₂ O或Cu ₂ O修饰的纳米复合材料在紫外线、可见人造光和阳光下对台盼蓝表现出更高的光催化活性。带隙能量从纯LDH的3.36 eV变为在水中获得的LDH-Ag ₂ O和LDH-Cu _{2 O的2.52和2.69 eV，以及在DES中获得的对应物的2.39和2.36 eV。 LDH-Cu 2} O-DES对台盼蓝的降解效率是所测试材料中最高的，在C ₀  = 200 mg/dm ³时，120 min后降解效率为92.80 % 。同时，将Ag ₂ O和Cu ₂ O掺入LDH结构中赋予了材料生物活性（MIC = 39和156 mg/dm ³），从而证实了可用于生物医学领域的多功能材料的实现。水处理中有机污染物和生物活性污染物的未来。