Open AccessPotential Use of Green Synthesized Al2O3 (Alumina) Nanoparticles from Guava Leaves (Psidium guajava) for the Removal of Methylene Blue from Wastewater
Author(s) -
Debasish Mondal,
Dipankar Mahata,
Kamala Mandy Hansda,
Sourav Mondal,
Ajit Das
Publication year - 2021
Publication title -
asian journal of chemistry/asian journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.145
H-Index - 34
eISSN - 0975-427X
pISSN - 0970-7077
DOI - 10.14233/ajchem.2021.23144
Subject(s) - psidium , fourier transform infrared spectroscopy , chemistry , methylene blue , nuclear chemistry , nanoparticle , nanomaterials , adsorption , aqueous solution , scanning electron microscope , chemical engineering , organic chemistry , nanotechnology , materials science , catalysis , photocatalysis , botany , engineering , biology , composite material
Recently non-harmful nanomaterials have acquired critical significant attention in wastewater treatmentcontaining organic pollutants especially toxic and hazardous dyes. In this regard, a low cost and ecofriendly method has been investigated for the green synthesis of alumina nanoparticles (Al2O3 NPs).The alumina nanoparticles were synthesized using an aqueous extract of Psidium guajava leaf as apotential stabilizing agent. The UV-visible spectroscopy, Fourier-transform infrared spectroscopy(FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy-dispersivespectroscopy (EDS) techniques were used to characterize the synthesized nanoparticles. The absorptionat 281 nm confirmed the formation of alumina nanoparticles. The FTIR spectra and XRD analysisconfirmed the presence of various functional groups and crystalline structures of Al2O3 NPs during thesynthesis. The spectrum clearly indicates the organic moieties in Psidium guajava extract are responsiblefor the biosynthesis of Al2O3 NPs. The suface morphology of Al2O3 NPs was confirmed by SEM andEDS studies. Besides this, the removal of methylene blue through adsorption and kinetic study wasalso reported.