摘要
通过对典型体系的湿润性、ζ电势、粘度和沉降性等界面特性的表征,系统地研究了有/无紫外光照射下TiO_2超微粉在水相中的分散特性,发现紫外光对分散作用有明显的光致增强效应,可以改善TiO_2超微粉在水相中的分散性能.机理研究表明,这一作用起源于TiO_2光致亲水性增强效应。
By the measurements of wettability, ξ potential, viscosity and sedimentation, the technique of surface chemistry was used to characterize the dispersion behavior under with and without UV irradiation condition. Photo-induced enhancement was found for the dispersion of nano-TiO2 in water. The photoac-tion highly improves the dispersion and stability. The effect is attributed to photogeneration of hydrophilic TiO2 surface through an investigation of the mechanism.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第9期1662-1665,共4页
Chemical Journal of Chinese Universities
基金
石油科学技术中青年创新基金
