Nitrate removal study of synthesized nano γ-alumina and magnetite-alumina nanocomposite adsorbents prepared by various methods and precursors.

The challenges in water treatment include the need for efficient removal of pollutants like nitrate, which poses significant environmental and health risks. Alumina's significance lies in its proven effectiveness as an adsorbent for nitrate removal due to its high surface area and affinity for nitrate ions. This study delves into the synthesis of differen nano-sized γ-alumina (γA1-5) employing diverse precursors and methods, including nepheline syenite, lime, aluminum hydroxide, precipitation, and hydrothermal processes at varying reaction times.

Epoxy-matrix polyaniline/-phenylenediamine-functionalised graphene oxide coatings with dual anti-corrosion and anti-fouling performance.

This research work reports on the anti-corrosion and anti-fouling properties of epoxy (E) coatings reinforced with polyaniline (PANI)/-phenylenediamine-functionalised graphene oxide (PGO) composites. The mass ratio of graphene oxide/-phenylenediamine in any PGO was assumed to be 1 : 1, but different PANI-PGO composites containing various loadings of PGO were prepared. An ultrasonic-assisted polymerization method was employed to produce PANI-PGO at low temperature (0 °C).