In this work, the synthesis of zinc oxide (ZnO) nanoparticles was made using an eco-friendly methodology with a natural extract. The fruit of tejocote () was used as a stabilizing agent for synthesizing zinc oxide nanoparticles (NPs). Once the NPs were obtained, diverse characterization techniques were used to determine the physicochemical and optical properties of the ZnO NPs; the ultraviolet–visible spectroscopy was used to determine the uv absorption spectra of ZnO NPs and the bandgap of the material, the FT-IR spectrum of the ZnO NPs shows the presence of the Zn–O bond at 560 cm, XRD results show that the ZnO NPs exhibit a hexagonal crystal structure zincite type, the SEM confirms slight agglomerations between nanoparticles, Also from TEM results, the nanoparticles present a quasi-spherical morphology with sizes ranging from 18.25 nm to 36.88 nm, indicating an influence of the concentration of the extract in the synthesis process of ZnO NPs. Photoluminescence spectroscopy of ZnO NPs shows strong emission bands in the visible spectrum around 425 nm, 467 nm, and 492 nm, and weak emission bands in the UV spectrum were observed. Finally, a photocatalytic study was realized for the photodegradation of 5 pollutant dyes: methylene blue (MB), malachite green (MG), congo red (CR), rhodamine b (RB), and methyl orange (MO). The results show degradation of the organic dyes after 180 min by a photodegradation process where ZnO nanoparticles act as a photocatalyst, indicating that the synthesized ZnO nanoparticles have excellent photocatalytic properties.

中文翻译：

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使用墨西哥山楂提取物合成的半导体氧化锌纳米粒子光催化降解水中的有机染料

在这项工作中，采用环保方法和天然提取物合成了氧化锌 (ZnO) 纳米粒子。 Tejocote（）的果实被用作合成氧化锌纳米颗粒（NPs）的稳定剂。获得纳米颗粒后，使用多种表征技术来确定 ZnO 纳米颗粒的物理化学和光学性质；利用紫外-可见光谱测定了ZnO NPs的紫外吸收光谱和材料的带隙，ZnO NPs的FT-IR光谱显示在560 cm处存在Zn-O键，XRD结果表明ZnO NPs 呈现六方红锌矿型晶体结构，SEM 证实纳米颗粒之间存在轻微团聚，另外从 TEM 结果来看，纳米颗粒呈现准球形形貌，尺寸范围为 18.25 nm 至 36.88 nm，表明提取物浓度的影响ZnO NPs 的合成过程。 ZnO NPs 的光致发光光谱显示在可见光谱中 425 nm、467 nm 和 492 nm 附近有强发射带，在紫外光谱中观察到弱发射带。最后，实现了亚甲基蓝（MB）、孔雀石绿（MG）、刚果红（CR）、罗丹明b（RB）和甲基橙（MO）5种污染物染料的光催化降解研究。结果表明，180 分钟后，有机染料通过 ZnO 纳米颗粒作为光催化剂的光降解过程被降解，表明合成的 ZnO 纳米颗粒具有优异的光催化性能。