Self-Assembly and Characterization of TiO2/PS Complex Particle and TiO2 Hollow Spheres
Using TiO2 particles obtained by hydrolysis of titanium oxysulfate as the precursor, polystyrene (PS) microspheres as the template, TiO2/PS complex particles were successfully deposited on Ti substrates through layer-by-layer self-assembly technique and the surfactant-assisted process at low temperature. Then removed PS spheres by two methods, TiO2 hollow spheres were attained. X-ray diffraction (XRD) and scanning electron microscopy (SEM) were employed to characterize the synthesized materials. The results showed that the crystallization, structure and surface morphology of TiO2/PS on the surface have a great relationship with the pH value of treating solution. Diversity effects on surface integrity and bioactive of hollow spheres happened due to different ways of removing PS core.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
F. Xiao et al., "Self-Assembly and Characterization of TiO2/PS Complex Particle and TiO2 Hollow Spheres", Advanced Materials Research, Vols. 197-198, pp. 136-139, 2011