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Spinel ferrite nanoparticles as potential materials in chlorophenol removal from wastewater

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Abstract

Persistent organic pollutants (POPs) including chlorophenols (CPs) are increasing in water effluents, creating serious problems for both aquatic and terrestrial lives. Several research attempts have considered the removal of CPs by functionalised nanomaterials as adsorbents and catalysts. Besides the unique crystal structure, spinel ferrite nanomaterials (SFNs) own interesting optical and magnetic properties that give them the potential to be utilised in the removal of different types of CPs. In this review, we highlighted the recent research work that focused on the application of SFNs in the removal of different CP substances based on the number of chlorine atom attached to the phenolic compound. We have also discussed the structure and properties of SFN along with their numerous characterisation tools. We demonstrated the importance of identifying the structure, surface area, porosity, optical properties, etc. in the efficiency of the SFN during the CP removal process. The reviewed research efforts applied photocatalysis, wet peroxide oxidation (WPO), persulfate activated oxidation and adsorption. The studies presented different paths of enhancing the SFN ability to remove the CPs including doping (ion substitution), oxide composite structure and polymer composite structure. Experimental parameters such as temperature, dosage of CPs and SFN structure have shown to have a major effect in the CP removal efficiency. More attention is needed to investigate the different properties of SFN that can be tailored through different techniques and expected to have major role in the removal mechanism of CPs.

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Hereby, I declare that the author contribution in this manuscript is as follows: Dr. Basma Al-Najar: writing the first draft of the manuscript. Prof. Ayman H Kamel: the idea, design and structure of the manuscript. Dr. Hanan Albuflasa: supervision and revision. Dr. Nicholas P. Hankins: supervision and revision.

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Correspondence to Basma Al-Najar.

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Al-Najar, ., Kamel, A.H., Albuflasa, H. et al. Spinel ferrite nanoparticles as potential materials in chlorophenol removal from wastewater. Environ Sci Pollut Res 30, 104976–104997 (2023). https://doi.org/10.1007/s11356-023-29809-7

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  • DOI: https://doi.org/10.1007/s11356-023-29809-7

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