title: Enhanced Photocatalytic Degradation of Environmental Pollutants under Visible Irradiation by a Composite Coating.
abstract: Although nanotechnology has offered effective and efficient solutions for environmental remediation, the full utilization of sustainable energy and the avoidance of secondary pollution are still challenges. Herein, we report a two-step modification strategy for TiO2nanoparticles by first forming a thin, surface-adherent polydopamine (PDA) shell onto the nanoparticles and then assembling core-shell nanoparticles as a photodegradation coating. The composite coating modified from TiO2could not only realize the highly efficient utilization of photons from the visible region but also avoid the secondary pollution of nanoparticles during application. Additionally, improvements in the adsorption ability after modification greatly facilitated the photocatalytic process of the modified materials. A preliminary in vivo study on Daphnia magna and a wastewater treatment experiment suggest that treatment with the composite coating can effectively eliminate fluorene and significantly reduce its lethality. We believe the two-step modification scheme can open new avenues for the facile modification of nanomaterials for designed purposes, especially in the field of environmental remediation.
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Shuqin
authors.initials: S
authors.lastname: Liu
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Qingkun
authors.initials: Q
authors.lastname: Hu
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Junlang
authors.initials: J
authors.lastname: Qiu
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Fuxin
authors.initials: F
authors.lastname: Wang
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Lin
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Zhu
authors.affiliation: College of Environment and Energy, South China University of Technology , Guangzhou 510006, PR China.
authors.forename: Chaohai
authors.initials: C
authors.lastname: Wei
authors.affiliation: College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology , Yueyang 414006, PR China.
authors.forename: Ningbo
authors.initials: N
authors.lastname: Zhou
authors.affiliation: MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University , No. 135, Xingang Xi Road, Guangzhou, Guangdong 510275, China.
authors.forename: Gangfeng
authors.identifier: http://orcid.org/0000-0002-0797-6036
authors.initials: G
authors.lastname: Ouyang
mesh_terms: D004785:Environmental Pollutants; D008027:Light; D049329:Nanostructures; D010782:Photolysis; D014025:Titanium / Q000528:radiation effects*
chemical_list: D004785:Environmental Pollutants; D014025:Titanium