Jadoun Sapana, Yáñez Jorge, Aepuru Radhamanohar, Sathish Manda, Jangid Nirmala Kumari, Chinnam Sampath
Departamento de Química, Facultad de Ciencias, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile.
Facultad de Ciencias Químicas, Departamento de Química Analítica E Inorgánica, Universidad de Concepción, Edmundo Larenas 129, 4070371, Concepción, Chile.
Environ Sci Pollut Res Int. 2024 Mar;31(13):19123-19147. doi: 10.1007/s11356-024-32357-3. Epub 2024 Feb 20.
The sustainable synthesis of zinc oxide nanoparticles (ZnO-NPs) using plant extracts has gained significant attention in recent years due to its eco-friendly nature and potential applications in numerous fields. This synthetic approach reduces the reliance on non-renewable resources and eliminates the need for hazardous chemicals, minimizing environmental pollution and human health risks. These ZnO-NPs can be used in environmental remediation applications, such as wastewater treatment or soil remediation, effectively removing pollutants and improving overall ecosystem health. These NPs possess a high surface area and band gap of 3.2 eV, can produce both OH (hydroxide) and O (superoxide) radicals for the generation of holes (h) and electrons (e), resulting in oxidation and reduction of the pollutants in their valence band (VB) and conduction band (CB) resulting in degradation of dyes (95-100% degradation of MB, MO, and RhB dyes), reduction and removal of heavy metal ions (Cu, Pb, Cr, etc.), degradation of pharmaceutical compounds (paracetamol, urea, fluoroquinolone (ciprofloxacin)) using photocatalysis. Here, we review an overview of various plant extracts used for the green synthesis of ZnO NPs and their potential applications in environmental remediation including photocatalysis, adsorption, and heavy metal remediation. This review summarizes the most recent studies and further research perspectives to explore their applications in various fields.
近年来，利用植物提取物可持续合成氧化锌纳米颗粒（ZnO-NPs）因其环保特性以及在众多领域的潜在应用而备受关注。这种合成方法减少了对不可再生资源的依赖，消除了对危险化学品的需求，最大限度地减少了环境污染和人类健康风险。这些ZnO-NPs可用于环境修复应用，如废水处理或土壤修复，有效去除污染物并改善整体生态系统健康。这些纳米颗粒具有高比表面积和3.2电子伏特的带隙，能产生羟基（OH）和超氧阴离子（O）自由基以生成空穴（h）和电子（e），从而在其价带（VB）和导带（CB）中导致污染物的氧化和还原，进而实现染料降解（亚甲基蓝、甲基橙和罗丹明B染料降解率达95%-100%）、重金属离子（铜、铅、铬等）的还原和去除以及利用光催化降解药物化合物（对乙酰氨基酚、尿素、氟喹诺酮（环丙沙星））。在此，我们综述了用于绿色合成ZnO纳米颗粒的各种植物提取物及其在环境修复中的潜在应用，包括光催化、吸附和重金属修复。本综述总结了最新研究以及进一步探索其在各个领域应用的研究前景。
