access icon free Green synthesis of ZnO/SiO2 nanocomposite from pomegranate seed extract: coating by natural xanthan polymer and its characterisations

This work presents a simple, economical and, importantly, green process to develop a nanocomposite (NC) that covers the functions of surfactant and polymer flooding in enhancing oil recovery (EOR). Thus, xanthan coated ZnO/SiO2 NC was prepared using the extract of the pomegranate seeds as a reducing and stabilising agent. The green synthesised NC was identified using the scanning electron microscopy, electron dispersive spectroscopy, elemental mapping, X-ray diffraction, and UV–vis analytical techniques. ZnO/SiO2/Xanthan NC was then dispersed in low-salinity water (1:20 diluted seawater) at different concentrations, and high suspension stability of NC was observed at different periods of time. This investigation provides a novel and green pathway for preparing nano-EOR fluids.

Inspec keywords: scanning electron microscopy; ultraviolet spectra; X-ray diffraction; nanomedicine; nanoparticles; electrokinetic effects; nanocomposites; surfactants; nanofabrication; suspensions; water; visible spectra; oil technology; zinc compounds; polymers; X-ray chemical analysis

Other keywords: pomegranate seed; ZnO-SiO2; electron dispersive spectroscopy; oil recovery; ZnO/SiO; green synthesised NC; stabilising agent; suspension stability; scanning electron microscopy; salinity water; UV-visible analytical technique; green synthesis; natural xanthan polymer; polymer flooding; surfactant; X-ray diffraction

Subjects: Engineering materials; Nanofabrication; Industrial processes

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