Modified Benign approach for probing the structural, optical and antibacterial activity of Sm3+-doped Bi3+-co-doped LaAlO3 nanoparticles

Abstract

Sm3+ (1 mol%)-doped Bi3+ (1 mol%)-co-doped LaAlO3 nanoparticles (NPs) were prepared using the mixture fuel approach using novel fuel E. tirucalli plant latex and sucrose in solution combustion method. The morphological and structural details were described expending various techniques like X-ray diffraction studies (XRD), electron microscopic studies including scanning electron microscopy (SEM) and transmission electron microscopy (TEM); characteristic stretching and bending of phonon vibrations were confirmed using Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. The energy band gap was estimated using UV–visible spectroscopy. PL emission spectra reveal the luminescence properties of the NPs, effectively excited by near UV wavelength (406 nm). The Judd–Ofelt (J–O) theory is implemented to find out luminescence intensity parameters and spectroscopic quality factors from the emission spectra. Antimicrobial activity of LaAlO3:Sm3+: Bi+ nanophosphor against pathogenic microorganisms was assessed by implementing a microplate dilution method for antibacterial and food poison technique for antifungal activities.