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Ammonium fluoride, titanium nitride, titanium dioxide as a raw material, milling prepared heterojunction photocatalyst TiN / F -TiO 2 < / sub> ; BN and TiO 2 titanium dioxide as raw material prepared heterojunction type milling photocatalyst BN / TiO 2 ; copper nitrate as raw materials , prepared by thermal decomposition of CuO , then put CuO the TiO 2 and NH of 4 F for raw materials , milling prepared heterojunction type photocatalyst of CuO / F -TiO 2 ; calcium nitrate and zinc nitrate as raw material , the use of hot prepared by the method of decomposition CaCO 3 / ZnO. UV-Vis, XRD, XPS, SEM, TEM, PL, and other instruments to carry out the analysis and characterization of the photocatalyst . By Oxidation of Methylene Blue , Rhodamine B and restore Cr 6 to study in the UV catalytic oxidation and reduction activity . The results showed that of TiN / F -TiO 2 of TiN in optimum amount of 0.2 wt%, the preferred milling time is 12 hours ; milling prepared BN / of TiO 2 the photocatalytic oxidation resistance than pure TiO 2 , and BN optimum amount of 0.5%, a preferred milling time is 0.5 hours ; milling prepared heterojunction type photocatalyst CuO / F-TiO 2 Photocatalytic oxidation and reduction performance than pure TiO 2 , CuO doping 1.0wt.%; zinc nitrate calcium nitrate as raw material , the use of a total of the precipitated precursor and then with the thermal decomposition method of CaCO 3 / ZnO was prepared . Discuss the impact of the heat treatment conditions on its photocatalytic activity . Single photocatalyst composite photocatalyst , the photocatalytic activity has definitely improved.
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