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SHAOFANG SUN,WEISHENG GUAN,XIAN ZHANG,ZHONGJIE ZHANG,YAN YAN 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.2
The removal of CIP from the environment has become a mandatory issue. In our paper, we haverealized the visible-light-driven degradation of CIP on the BiVO 4 – Bi 2 WO 6 nano-heterojunctionphotocatalysts. The synthesized photocatalysts were characterized by X-ray difraction (XRD),¯eld emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM),high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-Vis) ab-sorption spectra and photoluminescence (PL) spectra. Compared with the single-phase BiVO 4and Bi 2 WO 6 counterparts, BiVO 4 – Bi 2 WO 6 nano-heterojunction photocatalysts show enhancedphotocatalytic degradation activities in visible-light-driven CIP degradation. Particularly, whenRðBi 2 WO 6 =BiVO 4 Þ ¼ 10 wt:% , the products exhibit the highest CIP degradation ratio in 60 min of76.8% under visible light illumination. The tentative mechanism of the interface charge transfer(IFCT) efect in the BiVO 4 – Bi 2 WO 6 heterojunction structure is also discussed by using the bandposition calculation.