title: Investigation of TiO2 photocatalyst performance for decolorization in the presence of hydrodynamic cavitation as hybrid AOP.
abstract: In this article, an acoustic cavitation engineered novel approach for the synthesis of TiO2, cerium and Fe doped TiO2 nanophotocatalysts is reported. The prepared TiO2, cerium and Fe doped TiO2 nanophotocatalysts were characterized by XRD and TEM analysis to evaluate its structure and morphology. Photo catalytic performance of undoped TiO2 catalyst was investigated for the decolorization of crystal violet dye in aqueous solution at pH of 6.5 in the presence of hydro dynamic cavitation. Effect of catalyst doping with Fe and Ce was also studied for the decolorization of crystal violet dye. The results shows that, 0.8% of Fe-doped TiO2 exhibits maximum photocatalytic activity in the decolorization study of crystal violet dye due to the presence of Fe in the TiO2 and it may acts as a fenton reagent. Kinetic studies have also been reported for the hybrid AOP (HAOP) that followed the pseudo first-order reaction kinetics.
authors.affiliation: Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana State, India.
authors.forename: Bhaskar
authors.initials: B
authors.lastname: Bethi
authors.affiliation: Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana State, India. Electronic address: shirishsonawane09@gmail.com.
authors.forename: S H
authors.initials: SH
authors.lastname: Sonawane
authors.affiliation: Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana State, India.
authors.forename: G S
authors.initials: GS
authors.lastname: Rohit
authors.affiliation: Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai, MS, India.
authors.forename: C R
authors.initials: CR
authors.lastname: Holkar
authors.affiliation: Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai, MS, India.
authors.forename: D V
authors.initials: DV
authors.lastname: Pinjari
authors.affiliation: Chemical Engineering Department, Laxminarayan Institute of Technology, RTM Nagpur University, Nagpur 440033, MS, India.
authors.forename: B A
authors.initials: BA
authors.lastname: Bhanvase
authors.affiliation: Chemical Engineering Department, Institute of Chemical Technology, Matunga, Mumbai, MS, India.
authors.forename: A B
authors.initials: AB
authors.lastname: Pandit
keywords: Hybrid advanced oxidation process; Hydrodynamic cavitation; Nanophotocatalyst; Sonochemical synthesis; Waste water treatment