The optoelectrical and magnetic characteristics of naturally existing iron-based nanostructures, especially hematite and magnetite nanoparticles (H-NPs and M-NPs), gained significant research interest in various applications, recently. The main purpose of this Review is to provide an overview of the utilization of H-NPs and M-NPs in various environmental remediation. Iron-based NPs are extensively explored to generate green energy from environmental friendly processes such as water splitting and CO₂ conversion to hydrogen and low molecular weight hydrocarbons, respectively. The latter part of the Review provided a critical overview to use H-NPs and M-NPs for the detection and decontamination of inorganic and organic contaminants to counter the environmental pollution and toxicity challenge, which could ensure environmental sustainability and hygiene. Some of the future perspectives are comprehensively presented in the final portion of the script, optimiztically, and it is supported by some relevant literature surveys to predict the possible routes of H-NPs and M-NPs modifications that could enable researchers to use these NPs in more advanced environmental applications. The literature collection and discussion on the critical assessment of reserving the environmental sustainability challenges provided in this Review will be useful not only for experienced researchers but also for novices in the field.

中文翻译：

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用于绿色和可持续能源利用与环境污染控制的赤铁矿和磁铁矿纳米结构：综述。

天然存在的铁基纳米结构，尤其是赤铁矿和磁铁矿纳米颗粒（H-NP和M-NP）的光电和磁特性，最近在各种应用中引起了广泛的研究兴趣。这篇综述的主要目的是概述H-NP和M-NP在各种环境修复中的利用。广泛探索了铁基NP，以通过水分解和CO ₂等环境友好过程产生绿色能源。分别转化为氢和低分子量碳氢化合物。审查的后半部分对使用H-NP和M-NP进行无机和有机污染物的检测和净化提供了重要的概述，以应对环境污染和毒性挑战，这可以确保环境的可持续性和卫生。脚本的最后部分全面，乐观地提出了一些未来的观点，并得到了一些相关文献调查的支持，以预测H-NP和M-NP修饰的可能途径，从而使研究人员能够在实验室中使用这些NP。更先进的环境应用。