title: SrCo1-xTixO3-δperovskites as excellent catalysts for fast degradation of water contaminants in neutral and alkaline solutions.
abstract: Perovskite-like oxides SrCo1-xTixO3-δ(SCTx, x = 0.1, 0.2, 0.4, 0.6) were used as heterogeneous catalysts to activate peroxymonosulfate (PMS) for phenol degradation under a wide pH range, exhibiting more rapid phenol oxidation than Co3O4and TiO2. The SCT0.4/PMS system produced a high activity at increased initial pH, achieving optimized performance at pH ≥ 7 in terms of total organic carbon removal, the minimum Co leaching and good catalytic stability. Kinetic studies showed that the phenol oxidation kinetics on SCT0.4/PMS system followed the pseudo-zero order kinetics and the rate on SCT0.4/PMS system decreased with increasing initial phenol concentration, decreased PMS amount, catalyst loading and solution temperature. Quenching tests using ethanol and tert-butyl alcohol demonstrated sulfate and hydroxyl radicals for phenol oxidation. This investigation suggested promising heterogeneous catalysts for organic oxidation with PMS, showing a breakthrough in the barriers of metal leaching, acidic pH, and low efficiency of heterogeneous catalysis.
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, P.R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Miao
authors.affiliation: Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350 Kuching, Sarawak, Malaysia.
authors.forename: Jaka
authors.initials: J
authors.lastname: Sunarso
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Chao
authors.initials: C
authors.lastname: Su
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Wang
authors.affiliation: Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 5 Xin Mofan Road, Nanjing 210009, P.R. China.|Department of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
authors.forename: Zongping
authors.initials: Z
authors.lastname: Shao