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《Journal of Nantong University(Natural Science Edition)》 2018-02
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Study on Photocatalytic Degradation of the Cellulose Acetate by Natural Dyes Mixed Titanium Dioxide

SHI Jun;WU Yang;MIAO Jianwen;CHEN Yun;School of Chemistry and Chemical Engineering,Nantong University;Technology Center,Nantong Cellulose Fibers Co.,Ltd.;  
A compound photosensitizer was prepared by adding alkali and TiO_2 to the natural dyes extracted solution.Uv-vis spectrophotometer(UV-Vis) was used to test natural dyes absorption curve, and natural dyes photosensitizers with larger absorption peaks and stronger light absorption effects were selected. The cellulose acetate films added to the composite photosensitizer were used for photocatalytic degradation testing, differential thermo-thermal weight(DSC-TG) and characterization of scanning electron microscopy(SEM). The results showed that the natural dyes of Radix Arnebiae and Basil have good absorption in the visible region, and after the two kinds of natural dyes are mixed, the absorption peak is linearly superimposed and the absorbance enhanced. After Na OH is added to the natural dyes extracted solution, the absorption peaks enhanced and red shift occurrs. The photocatalytic degradation effect of compound photosensitizer on the cellulose acetate film is further improved by adding TiO_2 to the alkaline extracted solution of Radix Arnebiae and Basil.
【Fund】: 南通市应用研究项目(BK2014047)
【CateGory Index】: X703;O643.36
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