In order to improve the photocatalytic performance of TiO2 and investigate the effect of metal ion do-ping on photocatalytic performance of TiO2,the electrospinning technology and calcination process were used to prepare La3+/TiO2 nanofiber membrane.The morphology and structure of the material were characterized by SEM,XRD,FT-IR,and TG tests.With methylene blue as the target degradation agent,the mechanism of photocatalytic oxidation and degradation of dyes by La3+ modified TiO2 was further studied.The results showed that when the dye concentration was 10 mg/L and the concentration of La3+ doped modified TiO2 nanofibers was 15 mg/10 mL,the degradation rate was 63.41%after 10 minutes of catalysis,and 99.87%after 70 min of catalysis,which was 6.36%higher than the degradation rate of undoped TiO2 nanofibers.It can be seen that La3+ doping improves the photocatalytic degradation rate of TiO2,reducing the required time.
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