Sunlight-activated Mo-doped La₂CuO₄/rGO perovskite oxide nanocomposite for photocatalytic treatment of diverse dyes pollutant

The pristine La₂CuO₄, Mo-doped, and rGO-supported nanocomposites were fabricated by a simple Pechini route. FTIR and XRD analysis confirmed the fabrication of the perovskite structure. The XRD results exhibit that the prepared products have no impurities and the dopant element is successfully incorporated into the perovskite material. FESEM images exhibit the morphology of synthesized perovskite material. EDX data showed the existence of lanthanum, copper, molybdenum, carbon, and oxygen in grown material. The energy band gap of the rGO-based composite was narrow compared with other samples. The photodegradation capability of the rGO-base catalyst was achieved 99.4 % (MB), 98.8 % (MO), 99.35 % (MR), 98.7 % (RhB), and 99.6 % (SO) in 75 min under natural sunlight illumination. The scavenger experiment revealed that superoxide and hydroxyl radicals are active species during the decolorization reaction. Moreover, this catalyst is stable for six cycles. The synthesized perovskite is an effective material for water purification and environmental remediation.