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In this thesis, many different metal （Fe, Co, Ni, Cu, Al, Zn, Ga） phthalocyanines （MPc） were synthesized, and MPc/Fe3O4 nanoparticles （MPc/n-Fe3O4） were prepared by using the organic-inorganic complex technique, and characterized by Infrared Spectroscopy, element analysis, X-ray diffraction （XRD）, Transmission electron microscopy （TEM） and so on.Photocatalytic activities of FePc/n-Fe3O4 samples were evaluated by photooxidation of MB under visible light irradiation , and some influencing factors were disscused （such as initial concentration of MB, catalyst dosage concentration of H2O2）. 78.9% MB （10 mg/L） was oxidized in 2 hours’ reaction with 0.1 g/L FePc/n-Fe3O4 and 0.18 mol/L H2O2. When the MB initial concentration was 5 mg/L, with adding 1 g/L catalyst and 0.18 mol/L H2O2, the photocatalytic efficiency was highest. Moreover, as a co-friendly magnetic composite, the recovery of it, which still possess high catalytic activity after several reactions, can be easily achieved by changing external magnetic field. Moreover, the effect of different center metal of phthalocyanines were also discussed, which showed that other MPcs/n-Fe3O4 also exhibited high catalytic efficiency under visible light, and the active order of different center metal is Co >Fe≈Cu > Al > Zn > Ni > Ga. In this thesis, FePc can dissolve in 1-octyl-3-methylimidazolium trifluoroacetate ionic liquid （[Omim]TA） which is used as solvent and electrolyte. The FePc electrodeposited film was prepared by the Current-Voltage technique. The effect of electrodeposited temperature, time, scan rate and concentration of FePc on morphology of the electrodeposited film were investigated. Moreover, the nano-film electrode showed a well response to the concentration of ascorbic acid （AA） in the range of 1.7×10-7-3.6×10-4 mol/L, R=0.9993, and the detection limit was 1.7×10-7 mol/L. The oxidation potential negative shifted 264.2 mV, and the current increased obviously.
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