Visible light photocatalytic and magnetic properties of V doped α-Fe2O3 (VFO) nanoparticles synthesized by polyol assisted hydrothermal method. (November 2022)

• Record Type: Journal Article
• Authors: Ramprasath, R.; Pragasan, L. Arul; Manikandan, V.; Sudha, S.; Cholan, S.; Alarfaj, Abdullah A.; Hirad, Abdurahman Hajinur; Gokul, B.; Sampath, Sridhar
• Is Part Of: Chemosphere. Volume 307:Part 1(2022)
• Publication Date: 2022-11
• Subjects: V doped α-Fe2O3 -- 3D-flower structure -- Magnetic properties -- Photocatalysis; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2022.135575
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: Vanadium-doped α-Fe2 O3 nanoparticles (VFO nanoparticles) were prepared by polyol-assisted hydrothermal method. The impact on the structure, optical, magnetic and photocatalytic properties of α-Fe2 O3 nanoparticles were studied by varying the vanadium concentration from 1 to 5%. XRD analysis confirms the presence of hematite phase with hexagonal structure and estimates the nanocrystals size as ∼26–38 nm. FESEM and TEM reveal the formation of 3D flower-like morphology bundled with 2D nanoflakes. The estimated band gap energy was in the range 2.01 eV–2.12 eV. XPS study shows the presence of vanadium in V 4+ oxidation state in VFO nanoparticles. VSM study shows a non-saturated hysteresis loop with weak ferromagnetic behavior for all the VFO nanoparticles. 5% V doped α-Fe2 O3 nanoparticles (5%VFO nanoparticles) exhibited superior visible light driven photocatalytic activity compared to other samples. Graphical abstract: Image 1 Highlights: Vanadium doped α-Fe2 O3 nanoparticles were prepared by polyol-assisted hydrothermal method. Influence of V doping on the magnetic properties and methylene blue dye degradation has been studied. VFO nanoparticles exhibited weak ferromagnetic behavior. 92% methylene blue dye degradation under visible light irradiation.