Green synthesis and magnetically separable Fe3O4/SnO2/g-C3N4 ternary nanocomposite for degradation of Rhodamine B

Pathway of RhB degradation with prepared photocatalyst. [Display omitted] •Synthesis of nanoparticles like Fe3O4, SnO2, and its nanocomposite, Fe3O4/SnO2/g-C3N4 in the presence of plant extract.•The utilization of SnO2 nanoparticles with Fe3O4 and g-C3N4 for the purpose of photocatalyzing dyes has been investigated.•This paper examines the photocatalytic properties of Rhodamine B Dyes.•The discussion is about photocatalysts with respect to operating factors such as various irradiation time, various pH, different dye concentration, and catalyst amount.•This study investigates the process of photocatalysis and explores potential fragmentation paths. A new green synthesis technique for Fe3O4, SnO2, and its ternary nanocomposite, Fe3O4/SnO2/g-C3N4, had been devised. This approach used plant extracts from Lemon (Citrus x lemon) fruits, which were abundant in Mizoram, India. The nanomaterials were produced hydrothermally and evaluated by UV–Visible, FT-IR, XRD, SEM, TEM, and XPS analysis. XRD measurement confirmed the nanocomposite's phase purity. The photocatalytic activity of magnetically separable ternary photocatalyst materials for Rhodamine B (RhB) degradation was examined under visible light from a 50-watt Philips LED bulb at 30 min interval. An external magnet isolated the magnetically active ternary photocatalyst from the aqueous suspension, making recycling it easy and effective.