Artículo
Investigation on photocatalytic activity of bio-treated α-Fe2O3nanoparticles using Phyllanthus niruri and Moringa stenopetala leaf extract against methylene blue and phenol molecules : Kinetics, mechanism and stability
Fecha
2021-02Autor
Universidad San Sebastián
Universidad San Sebastián
Universidad San Sebastián
Universidad San Sebastián
Universidad San Sebastián
Haseena, S.
Shanavas, S.
Ahamad, T.
Alshehri, S. M.
Baskaran, P.
Duraimurugan, J.
Acevedo, R.
Khan, M. A.Majeed
Anbarasan, P. M.
Jayamani, N.
Institución
Resumen
In this article, Bio-treatment of α-Fe2O3 nanostructure using Phyllanthus niruri and Moringa stenopetala leaf extract as an effective reducing agent is carried out. The preparation of the rhombohedral α-Fe2O3 nanostructure is confirmed using X-ray diffraction analysis. The adsorption of biomolecules on the surface of the α-Fe2O3 nanostructure is confirmed using FT-IR. The chemical state analysis of green treated α-Fe2O3 nanoparticles was carried out using XPS techniques and it confirms the existence of Fe-2p and O-1s elements. The surface area of Moringa stenopetala leaf extract treated α-Fe2O3 nanoparticles were identified using BET analysis and it is found to be 58 m2/g. The formation of spherical shaped α-Fe2O3 nanoparticles was identified using HR-TEM analysis and EDX reveals the absence of any other impurities. The reactive species trapping experiment confirms the rapid production of O2•- and •OH radicals during photocatalytic process. The degradation efficiency of PNFO and MSFO against MB after 180 min was estimated to be 92% and 96%, respectively. The degradation efficiency of PNFO and MSFO against phenol after 240 min was estimated to be 90% and 92%, respectively.
Materias
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