Architecting diverse carbonous nanocomposites of Sr2V2O7 for enhanced photodegradation potential of organic pollutants: sonochemical synthesis, characterization, optimization of conditions and mechanisms

Abstract

The present study equips sonochemical synthesis of Sr₂V₂O₇ (SVO) nanoparticles with carbon coating’s impact to destroy the solutions polluted with hazardous contaminants including rhodamine B (RhB), methylene blue (MB), and methyl orange (MO) under visible-light radiation. Using diverse amine templates with dual functionality of precipitation/capping agent in sono-reaction, identification techniques exhibited morphologically desirable and triclinic SVO sample in the presence of teta, which had a mean of 72.08 nm and specific surface area of 14.621 m²/g. To minimize charge recombination, increase in surface area/photoactive sites, and shift toward a larger wavelength window, the incorporation of different carbon structures on the SVO surface was perused. Particularly, detailed photodegradation investigations followed the order of MO < MB < RhB with maximum efficiency for binary SVO/g-C₃N₄ nanocomposites as compared with other as-obtained SVO-based compounds. Photo-operational variables in starting RhB concentration and catalyst dosage offered that 89.39% degradation could result in 50 mg of SVO/g-C₃N₄ nanocomposites and 10 ppm dye within 120 min of visible irradiation. High photo-durability of resultant SVO/g-C₃N₄ nanocomposites showed five time regeneration process with only 14.39% reduction in activity. It is hoped that the effectiveness of the photocatalytic heterostructure’s design based on SVO nanoparticles and g-C₃N₄ nanosheets could be contributed in regulating the interface charge transfer pathway for environmental clean-up.