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<p>Nanotechnology has been more applicable in the field of petroleum engineering since it offers technological innovative methods whereby the technology can be used in improving efficiency and more sustainability as well as operational efficiency. A number of these nanomaterials have been studied especially the iron oxide nanoparticles (IONPs) due to their high surface area, magnetism, and chemical stability. The aim of the present paper is the synthesis of the iron oxide nanoparticles (IONPs) using the leaf extracts of the commonly used plant Azadirachta indica (neem). To determine the structures and physicochemical characteristics of the synthesized nanoparticles, UV-visible spectroscopy, X-ray diffraction (XRD), and particle size analysis were used. The synthesized nanoparticles exhibited a hydrodynamic diameter of 458.8&#xa0;nm with a polydispersity index of 0.242, indicating moderate dispersion stability but the presence of aggregation. XRD analysis confirmed the formation of crystalline α-Fe₂O₃ phase. UV–Vis spectroscopy showed an absorption peak at 210.56&#xa0;nm, which deviates from the commonly reported range of 250–350&#xa0;nm due to possible phytochemical capping effects. Based on literature, such nanoparticles can reduce interfacial tension from ~ 30 mN/m to below 10 mN/m and contribute to an additional 5–15% oil recovery. Besides the synthesis and characterization this paper discusses the possible use of IONPs mediated by Azadirachta indica in enhanced oil recovery (EOR). The results demonstrate that neem-mediated synthesis provides a sustainable and cost-effective approach for producing stable iron oxide nanoparticles with promising characteristics for petroleum engineering applications.</p>

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Green synthesis of the Azadirachta indica-derived iron oxide nanoparticles and their use in the enhanced oil recovery

  • 期刊论文

  • 发表日期：

    2026年4月21日

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  • Pushpa Sharma,
  • Saptarshi Chetia

摘要

Nanotechnology has been more applicable in the field of petroleum engineering since it offers technological innovative methods whereby the technology can be used in improving efficiency and more sustainability as well as operational efficiency. A number of these nanomaterials have been studied especially the iron oxide nanoparticles (IONPs) due to their high surface area, magnetism, and chemical stability. The aim of the present paper is the synthesis of the iron oxide nanoparticles (IONPs) using the leaf extracts of the commonly used plant Azadirachta indica (neem). To determine the structures and physicochemical characteristics of the synthesized nanoparticles, UV-visible spectroscopy, X-ray diffraction (XRD), and particle size analysis were used. The synthesized nanoparticles exhibited a hydrodynamic diameter of 458.8 nm with a polydispersity index of 0.242, indicating moderate dispersion stability but the presence of aggregation. XRD analysis confirmed the formation of crystalline α-Fe₂O₃ phase. UV–Vis spectroscopy showed an absorption peak at 210.56 nm, which deviates from the commonly reported range of 250–350 nm due to possible phytochemical capping effects. Based on literature, such nanoparticles can reduce interfacial tension from ~ 30 mN/m to below 10 mN/m and contribute to an additional 5–15% oil recovery. Besides the synthesis and characterization this paper discusses the possible use of IONPs mediated by Azadirachta indica in enhanced oil recovery (EOR). The results demonstrate that neem-mediated synthesis provides a sustainable and cost-effective approach for producing stable iron oxide nanoparticles with promising characteristics for petroleum engineering applications.