Low-cost Zeolite/TiO2 composite for the photocatalytically enhanced adsorption of Cd2+ from aqueous solution

摘要: Nano-TiO2 (anatase) powders were immobilized on crystalline zeolite (size = 45 µm). The composite material was used for the rapid and efficient adsorption of Cd2+ ions from an aqueous solution. Furthermore, composites exposed to two different calcination temperatures (500 700 °C) characterized by employing XRD, UV–Vis DRS, EDX, XRF, pH point zero charge analyses. Green synthesis, impregnation method obtain zeolite-supported TiO2. present study demonstrated that photocatalytic maximum capacity TiO2 (qm = 59.3 mg/g) 3.7 times higher than bare (qm = 16.2 mg/g). percent removal efficiency 99.6% observed using under compact fluorescent light. Adsorption kinetics studies performed results obtained best fitted Langmuir isotherm pseudo-second-order kinetics. As wastewater containing ionic strength, model dye Methylene Blue (MB) as competitive in process. MB acted photo-generated positive hole (h+) trapper enhanced (qm = 68.8 mg/g) further reducing electron/hole pairs recombination rate. easily separable showed high reusability physical (high-temperature combustion) regeneration compared chemical (Fenton oxidation) regenerated samples.