| The AgBr/polyacrylonitril（PAN）composites were synthesized via a facile ion exchange method using PAN,NaBr and AgNO3 as raw materials.Then,The Ag/AgBr/cyclized polyacrylonitrile（CPAN）composite material was obtained by heat treatment method and irradiation under UV light.The crystal structure,morphology,chemical composition and photoelectrochemical property of Ag/AgBr/CPAN composites were characterized by XRD,SEM,EDS,XPS,FTIR,UV-vis DRS,PL,EIS and PT.Photocatalytic activities of Ag/AgBr/CPAN material were investigated systematically with MO as model pollution under visible light irradiation.The results show that the photocatalytic activity and stability of Ag/AgBr/CPAN composites were improved significantly.The carriers scavenger experiment indicated that the photogenerated holes and superoxide radicals might be the main active species in MO photodegradation.Ag/AgBr/CPAN composites were synthesized by in-situ method under heat treatment method and UV light.The crystal structure,morphology,chemical composition and photoelectrochemical property of Ag/AgBr/CPAN composites were characterized by XRD,SEM,XPS,FTIR,UV-vis DRS,PL and EIS.Photocatalytic activities of Ag/AgBr/CPAN material were investigated systematically with MO as model pollution under visible light irradiation.The results show that the photocatalytic activity and stability of Ag/AgBr/CPAN composites were improved significantly.The carriers scavenger experiment indicated that the photogenerated holes and superoxide radicals might be the main active species in MO photodegradation.Cyclized polyacrynitrile（CPAN）and AgBr materials were prepared using a simple chemisorption and heat-treatment approach.The as-prepared composites were characterized by XRD,SEM,FTIR,XPS,UV-vis DRS,PL,EIS,etc.,and their visible-light photocatalytic performances were investigated by evaluating the photodegradation of methyl orange solutions under visible light irradiation.The results show that the photocatalytic activity and stability of Ag/AgBr/CPAN composites were improved significantly.The polyacrylonitrile（PAN）were synthesized by aqueous deposited polymerization using acrylonitrile and AgBr were prepared by precipitation methd.Then AgBr/CPAN composites film were obtained by chemical adsorption method under heat-treatment approach.The crystal structure,morphology,chemical composition and photoelectrochemical property of AgBr/CPAN composites film were characterized by XRD,SEM,XPS,FTIR,HPLC and UV-vis DRS.Photocatalytic activities of AgBr/CPAN film were investigated systematically with Rh B as model pollution under visible light irradiation.The AgBr/CPAN film were easy to recycle and the stability of it were improved significantly.The carriers scavenger experiment indicated that the photogenerated holes and superoxide radicals might be the main active species in RhB photodegradation. |
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