title: Visible Light Assisted Heterogeneous Fenton-Like Degradation of Organic Pollutant via α-FeOOH/Mesoporous Carbon Composites.
abstract: A novel α-FeOOH/mesoporous carbon (α-FeOOH/MesoC) composite prepared by in situ crystallization of adsorbed ferric ions within carboxyl functionalized mesoporous carbon was developed as a novel visible light assisted heterogeneous Fenton-like catalyst. The visible light active α-FeOOH nanocrystals were encapsulated in the mesoporous frameworks accompanying with surface attached large α-FeOOH microcrystals via C-O-Fe bonding. Assisting with visible light irradiation on α-FeOOH/MesoC, the mineralization efficiency increased owing to the photocatalytic promoted catalyzing H2O2beyond the photothermal effect. The synergistic effect between α-FeOOH and MesoC in α-FeOOH/MesoC composite improved the mineralization efficiency than the mixture catalyst of α-FeOOH and MesoC. The iron leaching is greatly suppressed on the α-FeOOH/MesoC composite. Interestingly, the reused α-FeOOH/MesoC composites showed much higher phenol oxidation and mineralization efficiencies than the fresh catalyst and homogeneous Fenton system (FeSO4/H2O2). The XPS, XRD, FTIR, and textural property results reveal that the great enhancement comes from the interfacial emerged oxygen containing groups between α-FeOOH and MesoC after the first heterogeneous Fenton-like reaction. In summary, visible light induced photocatalysis assisted heterogeneous Fenton-like process in the α-FeOOH/MesoC composite system improved the HO• production efficiency and Fe(III)/Fe(II) cycle and further activated the interfacial catalytic sites, which finally realize an extraordinary higher degradation and mineralization efficiency.
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Xufang
authors.initials: X
authors.lastname: Qian
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Ren
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Dongting
authors.initials: D
authors.lastname: Yue
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Han
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Jinping
authors.initials: J
authors.lastname: Jia
authors.affiliation: School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Rd., Shanghai 200240, China.
authors.forename: Yixin
authors.identifier: 0000-0002-8663-9993
authors.initials: Y
authors.lastname: Zhao
mesh_terms: D002244:Carbon; D002384:Catalysis; D004785:Environmental Pollutants / Q000737:chemistry*; D005290:Ferric Compounds; D006861:Hydrogen Peroxide; D007501:Iron; D008027:Light
chemical_list: D004785:Environmental Pollutants; D005290:Ferric Compounds; D002244:Carbon; D006861:Hydrogen Peroxide; D007501:Iron