title: Adsorption and photocatalytic degradation of pharmaceuticals and pesticides by carbon doped-TiO2 coated on zeolites under solar light irradiation.
abstract: To evaluate the performance of zeolite-supported carbon-doped TiO(2) composite catalysts toward target pollutants under solar light irradiation, the adsorption and photocatalytic degradation of 18 pharmaceuticals and pesticides with distinguishing features (molecular size and volume, and photolysis) were investigated using mordenite zeolites with SiO(2)/Al(2)O(3) ratios of 18 and 240. Different quantities of carbon-doped TiO(2) were coated on the zeolites, and then the finished composite catalysts were tested in demineralized, surface, and hospital wastewater samples, respectively. The composite photocatalysts were characterized by X-ray diffraction, field emission scanning electron microscopy, and surface area and porosity analyses. Results showed that a dispersed layer of carbon-doped TiO(2) is formed on the zeolite surface; this layer blocks the micropores of zeolites and reduces their surface area. However, these reductions did not significantly affect adsorption onto the zeolites. Our results demonstrated that zeolite-supported carbon-doped TiO(2) systems can effectively degrade 18 pharmaceuticals and pesticides in demineralized water under natural and simulated solar light irradiation. In surface and hospital wastewaters, zeolite-supported carbon-doped TiO(2) systems present excellent anti-interference capability against radical scavengers and competitive organics for pollutants removal, and higher pollutants adsorption on zeolites evidently enhances the removal rate of target pollutants in surface and hospital wastewater samples with a complicated matrix.
authors.affiliation: Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: pureson@163.com; pureson@cqu.edu.cn; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China; These authors contributed to the work equally and should be regarded as co-first authors.
authors.forename: Ye
authors.initials: Y
authors.lastname: An
authors.affiliation: Ghent University, Coupure Links 653, B-9000 Gent, Belgium; Delft University of Technology, PO Box 5048, 2600 GA Delft, The Netherlands; These authors contributed to the work equally and should be regarded as co-first authors.
authors.forename: David Johannes
authors.initials: DJ
authors.lastname: de Ridder
authors.affiliation: Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: pureson@163.com; pureson@cqu.edu.cn; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China.
authors.forename: Chun
authors.initials: C
authors.lastname: Zhao
authors.affiliation: Ghent University, Coupure Links 653, B-9000 Gent, Belgium; These authors also contributed equally to this work.
authors.forename: Klaas
authors.initials: K
authors.lastname: Schoutteten
authors.affiliation: Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; These authors also contributed equally to this work.
authors.forename: Julie Vanden
authors.initials: JV
authors.lastname: Bussche
authors.affiliation: Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China E-mail: pureson@163.com; pureson@cqu.edu.cn; National Centre for International Research of Low-carbon and Green Buildings, Chongqing University, Chongqing 400045, China; These authors also contributed equally to this work.
authors.forename: Huaili
authors.initials: H
authors.lastname: Zheng
authors.affiliation: Chemistry and Chemical Engineering, Chongqing University, Chongqing 400045, China; These authors also contributed equally to this work.
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.affiliation: Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium; These authors also contributed equally to this work.
authors.forename: Lynn
authors.initials: L
authors.lastname: Vanhaecke
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000032:analysis; D010575:Pesticides / Q000528:radiation effects*; D004364:Pharmaceutical Preparations / Q000528:radiation effects*; D010782:Photolysis; D013472:Sunlight; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000528:radiation effects*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D010575:Pesticides; D004364:Pharmaceutical Preparations; D014874:Water Pollutants, Chemical; D017641:Zeolites; C009495:titanium dioxide; D002244:Carbon; D014025:Titanium