Silver-doped lanthanum nickel oxide decorated Ti3C2Tx MXene nano-composite (Ag–LaNiO3/MXene) for advanced photocatalytic waste-water treatment

Abstract

Nanomaterials with novel properties and broad potential applications have been widely anticipated in light of recent advances in material science. In this research, Ag-doped LaNiO3/MXene nanocomposite was fabricated by facile routes. Various techniques like XRD, FTIR, SEM and UV–vis absorption spectroscopy were used for the characterization. FTIR results showed different vibrational modes for Ni–O and La–O. Morphological studies were done by SEM analysis. Optical band gap was calculated using UV–vis absorption spectroscopy and the results showed a decrease in bandgap from 2.96 eV to 2.78 eV. The Orthorhombic structure of fabricated Ag–LaNiO3/MXene was confirmed by XRD. To evaluate the photocatalytic efficiency, bromophenol blue (BPB), methyl orange (MO), and benzoic acid (BA) were used as model wastewater contaminants. Photo-catalytic results revealed that Ag–LaNiO3/MXene degraded 84 %, 64 %, and 55 %, of (BPB), (MO), and (BA) respectively. Bromophenol blue highly (84 %) degraded in the whole process. For Ag–LaNiO3/MXene, the rate constants for BPB, MO, and BA were 0.02281 min−1, 0.01142 min−1, and 0.00789 min−1. Hence, this present work revealed that Ag–LaNiO3/MXene enhanced photo-catalytic efficiency at a greater rate.