Preparation And Properties Of Ag/AgCl Modified SrTiO₃ And CdSnO₃·3H₂O

Energy crisis and environmental deterioration have become more and more severe on a global scale.Photocatalytic technology,which is efficient,low-cost and ecofriendly,have attracted great interests.As the core part of the photocatalytic technical field,to develop visible-light-sensitive photocatalysts with excellent activity is the most important.In this paper,the photocatalysts Ag/AgCl/SrTiO₃ and Ag/AgCl/CdSnO₃·3H₂O were successfully fabricated via the ultrasound-assisted precipitation-photoreduction method.The crystallinity,morphology,optical property,chemical state and element composition of the as-prepared samples were studied by XRD,SEM,TEM,HRTEM,EDX,UV-Vis DRS,XPS,FTIR and PL.In this paper,RhB,MO,MB,phenol,BPA,TC and OTC-HCl were photodegraded as the target pollutants under visible light irradiation to evaluate the photocatalytic performance of the obtained materials.Meanwhile,we also discussed the photocatalytic mechanism based on the characterization results.The research contents and achievements of the paper are as follows:Firstly,we introduced the fabrication of Ag/AgCl/SrTiO₃ and its visible light photocatalytic performance.We fabricated the composite via sonochemistry together with ultrasound-assisted precipitation-photoreduction method.The photocatalytic performance and recycle experiment of the samples were assessed by photodegradation of RhB.We also conducted the photodegraded experiment in whcih MO,MB,phenol and BPA was the target pollutants to test the extensive adaptability of the samples.Finally,the photocatalytic mechanism of the sample was discussed based on the characterization results,band structure analysis and free radical capture experiments of the composite.Then,we introduced the fabrication of Ag/AgCl/CdSnO₃·3H₂O and its visible light photocatalytic performance.CdSnO₃·3H₂O was formed by homogeneous precipitation method,and the Ag/AgCl nanoparticles were attached on the surface of CdSnO₃·3H₂O via ultrasound-assisted precipitation-photoreduction method.Various characterization techniques were used to investigate the samples.MO was chosen as the target pollutant in the photodegradation experiment to assess the photocatalytic performance and recyclability of the samples.Also,TC and OTC-HCl were photodegraded by the samples to test their adaptability.In the light of active species trapping experiments and band position analysis,we put forward the possible photocatalytic mechanism of the composites.In the end,we summarized the contents of this paper and made a prospect for our future research work.