Cotton Fabrics Loaded with Low-Temperature Prepared SiO2/TiO2 Mixing Sols for Photocatalytic Degradation of Organic Dye
A SiO2 aqueous sol was prepared and mixed with the anatase TiO2 sol synthesized at low temperature in different molar ratios for the coating of cotton fabrics using padding-drying process. And then the photocatalytic activity of the resulting SiO2/TiO2-loaded cotton fabrics was evaluated in the degradation of Rhodamine B in water. The effect of the SiO2 content on the photocatalytic performance of the loaded fabrics was investigated with respect to dye decoloration percentage. UV-Vis spectrum was also used to examine the dye degradation process in the presence of the SiO2/TiO2-loaded cotton fabric. The results indicate that when the ratio of Si/Ti reaches 1:1-3, the finished fabrics have the best photocatalytic activity. Moreover, UV-Vis spectrum indicates that the addition of SiO2 on the cotton fabric can enhance the decomposition of the dye molecular azo linkages and aromatic rings.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
J. K. Yang et al., "Cotton Fabrics Loaded with Low-Temperature Prepared SiO2/TiO2 Mixing Sols for Photocatalytic Degradation of Organic Dye", Advanced Materials Research, Vols. 197-198, pp. 1192-1195, 2011