Synthesis And Property Of Inorganic Composite Material For UV-Shielding

The Zr doped zinc oxide, Zn-Ce composite oxide and Mn doped zinc oxide were synthesized by combining co-precipitation and hydrothermal method under mild condition from zinc nitrate. The effects of the amount of Zr(CeO2 and Mn)in composite material, hydrothermal temperature, hydrothermal time and prepared method on composite material were systematically studied. And the prepared inorganic material were characterized by some kinds of means. The UV-Shielding property of prepared material was tested with a coating method. The results are as follows:For Zr doped zinc oxide, the optimal amount of doped Zr is 3.5%, and the optimal process is as follows: under the effect of surfactant(CTAB), zinc nitrate and zirconium oxychloride were suffered precipitation under room temperature and then hydrothermal treatment with 150℃and 0.5h respectively; For Zn-Ce composite oxide, the optimal amount of CeO2 is 12.5%, and the optimal process is as follows: under the effect of surfactant, zinc nitrate and cerous nitrate were suffered precipitation under room temperature and then hydrothermal treatment with 120℃and 1h respectively; For Mn doped oxide, the optimal amount of Mn is 3%, and the optimal process is as follows: under the effect of surfactant, zinc nitrate and manganese nitrate were suffered precipitation under room temperature and then hydrothermal treatment with 150℃and 0.5h respectively. In order to avoid the effect of surfactant on the property of UV-Shielding, the above three kind of inorganic material were all washed by de-ionized water and ethanol.The prepared inorganic composite material were dispersed by ultrasonic dispersion and mechanic dispersion to form dispersing agent. The thin films were prepared by adding the above dispersing agent into hydrosol of polymer binder. The UV-Shieding property of the films was tested by UV-3010 ultraviolet spectrophotometer. As the result revealed: compared with pure ZnO, these composite material has the almost same transmittance for visible light but the transmittance of ultraviolet is lower than that of ZnO. That means doping some other element(s) and compound other semiconductor can strengthen the UV-Shielding property of ZnO.