银修饰磷酸钒锂可见光催化降解水中氟虫腈研究

In this study, silver modified lithium vanadium phosphate was prepared by sol-gel method and UV silver modification. The crystallization of silver modified lithium vanadium phosphate was confirmed by X-ray diffraction. The UV-visible absorption spectrum of silver modified lithium vanadium phosphate was extended to 720 nm, which greatly improves its absorptivity of visible light and enhanced the electron donating capacity, compared to traditional UV light driven photocatalyst nano-TiO2, and visible light driven photocatalyst Bi2O3. In the degradation of fipronil in aqueous solution, silver modified lithium vanadium phosphate exhibited high eifficiency for photocatalytic transformation of fipronil under visible light irradiation. Photo-generated electrons plays a key role on the degradation of fipronil in aqueous solution.