摘要
WO_(3)/Ag composite film photoanodes were synthesized by hydrothermal combined electrodeposition method.Characterization of samples was conducted by scanning electron microscope(SEM)and X-ray diffraction(XRD),which showed that WO_(3)/Ag composite films had been synthesized.Diffuse reflectance spectra show WO_(3)/Ag composite film has more strong absorption than WO_(3) film under simulated visible light irradiation.Electrochemical impedance spectroscopy shows WO_(3)/Ag composite film photoanode enhances charge transfer efficiency compared with WO_(3) film.WO_(3)/Ag composite film photoanodes show higher photocurrent and photoelectric catalytic activity than WO_(3) film,and the WO_(3)/Ag composite film obtained by depositing Ag nanoparticles at 50 s(WO_(3)/Ag-50)shows the highest photocurrent and photoelectric photoelectric catalytic activity.Meanwhile,the photoelectric catalytic activity of the composite film is higher than their direct photocatalytic and electric catalytic activity.The higher photocurrent and photoelectric catalytic activity of the WO_(3)/Ag composite film photoanodes are attributed to the surface plasmon resonance effect of Ag nanoparticles and Schottky junction effect at the WO_(3)/Ag interface.
基金
supported by the Education Department Project of Jilin Province(No.JJKH20220726KJ)
the Science and Technology Department Project of Jilin Province(No.20200201077JC)
the Natural Science Foundation of Chongqing City(No.CSTB2022NSCQ-MSX0751)。
