The antifungal and photocatalytic activity of mixed compounds of double hydroxide [CaZn₂(OH)₆•2H₂O] with portlandite [Ca(OH)₂] synthesized via sol-gel were evaluated. The compound was tested by in vitro assay to determine its antifungal activity using the agar diffusion and broth microdilution assays, applied to the fungal models: Aspergillus niger and Penicillium oxalicum. Also, these compounds were characterized by X-ray diffraction, infrared spectroscopy, dynamic light scattering, and its morphological structure was identified by HR-SEM and TEM-SAED which shows agglomerated particles formed by nanoparticle sizes between 100−500 nm, which are correlated whit hydrodynamic radio around 155 nm. Additionally, in the relation of microbiological assays, the outstanding minimum inhibitory concentration of unmixed calcium zincate hydroxide dihydrate (CZ) correspond to 156 μg/mL, however, when is mixed with 10 % of Ca(OH)₂ diminishes up to 78 μg/mL, indistinctively of the evaluated fungus. Likewise, a photocatalytic degradation test was carried out with methylene blue dye as a model organic pollutant, reaching an efficiency of ∼92 %. Our results suggest that low concentrations of Ca(OH)₂ improve the antifungal activity of CZ, without altering the solution stability, the photocatalytic and chemical properties of the compounds. Therefore, the compatibility with the limestone of both materials can be proposed as an excellent product to avoid fungal biodeterioration.

评价了通过溶胶-凝胶法合成的氢氧化物[CaZn ₂（OH）₆ •2H ₂ O]与氢氧化钙[Ca（OH）₂ ]的混合化合物的抗真菌和光催化活性。使用琼脂扩散和肉汤微稀释测定法通过体外测定法测试该化合物的抗真菌活性，并将其应用于真菌模型：黑曲霉和草酸青霉菌。此外，这些化合物还通过X射线衍射，红外光谱，动态光散射进行了表征，并通过HR-SEM和TEM-SAED鉴定了其形态结构，显示出由100-500 nm之间的纳米粒径形成的团聚颗粒155 nm附近的白色流体动力学无线电。此外，在微生物检测方面，未混合的氢氧化锌锌氢氧化物二水合物（CZ）的杰出最小抑菌浓度相当于156μg/ mL，但是当与10％的Ca（OH）_2混合时最多可减少78μg/ mL，与所评估的真菌没有明显关系。同样，用亚甲基蓝染料作为模型有机污染物进行了光催化降解试验，效率达到约92％。我们的结果表明，低浓度的Ca（OH）_2可改善CZ的抗真菌活性，而不会改变溶液的稳定性，化合物的光催化和化学性质。因此，可以提出两种材料与石灰石的相容性是避免真菌生物降解的优良产品。