Preparation And Properties Of The Copper Phthalocyanine Tetrasulfonate Sensitized Titanium Dioxide Photocatalyst

This paper is expected to build a novel kind of the dye modified semiconductor photocatalyst under visible wavelengths by expanding intrinsic sensitivity wavelengths and improving links semiconductor with sensitizer.The research progresses, hotspots of photocatalyst are summarized and reviewed;it expatiates that problems, settlements, as well as the prospects of the research on nanoparticle titanium dioxide photocatalyst;the keystone stress that problems and circumstance of research on the copper phthalocyanine tetrasulfonate modified TiO₂ by expanding intrinsic sensitivity wavelengths for improving its photocatalysis efficiency. We adopted that thinking paths are hydrothermal in situ of high photocatalyst efficiency photocatalyst and chemosynthesis bond for improving stability.Synthesis methods and procedures of hydrothermal in situ of the copper phthalocyanine tetrasulfonate modified titanium dioxide and by chemical bond linked copper phthalocyanine tetrasulfonate with titanium dioxide photocatalyst are prepared and characterized with transmission electron microscopy (TEM), Scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-Visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR). A series of important conclusions and some newly developed achievements have been obtained, this may promote the civil employment of the photocatalyst with CuPcTs under visible light.The hydrothermal method and in situ technology process to fabricate nanocomposite the copper phthalocyanine tetrasulfonate modified titanium dioxide for photocatalysis use is investigated: growth of the sample and performance of photocatalyst as well as are sensitive to and cross-affected by parameters of hydrothermal method, heat treatment and parameters of photocatalyst experiments, to affirm the best of parameters of hydrothermal method and heat treatment;Based on using CH₃COCH₂COCH₂ for controling the rate of Ti(OC₄H₉)₄ hydrolyzation reaction and adding CuPcTs for controlling its concentration or changing its environment;synthesizing anatase and adsorbing photosensitizers at the same time, maybe this can get one reciprocally interlude on microstructure;validating the samples photocatalysis capability by change of MO concentration after photocatalysis;with filters photocatalysis experiment adding up other several experiments under visible light it showed degradation of MO based on the photosensitization of CuPcTs;the significance is that, MO etc with phenyls can be degraded using this sample under visible light;consulting reuse photocatatlysis times of sample as its stability, at 4th reuse its rate of degrade declined to 87.5 %.By chemical bond linked copper phthalocyanine tetrasulfonate with titanium dioxide photo catalyst are prepared is proved by FT-IR and gived its reactant equation. Under visible light its photocatalysis ability is close to pure CuPcTs solution by degradation of MO in visible wavelengths and photovoltaic experimentation. Because its CuPc-PD is denseness on Y1O2 surface, the chromospheres of MO cannot close toTiO2 and excited electrons cannot combine OH to join the reaction.