کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
613399 | 880721 | 2006 | 10 صفحه PDF | دانلود رایگان |

The influence of concentration of nonionic TRITON X-100 and anionic ATLAS G-3300 surfactants, and pH of medium on the size and zeta-potential of TiO2 particles in the water suspensions has been studied. Suspensions have been prepared by mixing of the titanium dioxide in the suitable mediums at 10 min and 6 h correspondingly. It was established, that the duration of mixing of the suspensions has an essential influence on the dependence of zeta-potential and size of particles versus concentration of surfactant. However, the duration of mixing does not influence the dependence of electrical conductivity and pH of the suspensions on concentration of surfactant. It is shown that anionic ATLAS G-3300 surfactant is more effective stabilizator of aqueous suspensions of titanium dioxide, than nonionic surfactants of TRITON X-100. It is found that hydrophobic interaction has important role in the processes of stabilization of suspensions for nonionic surfactant, and for anionic surfactant—moving of ψδψδ-planes into solution's depth.
The dependence of zeta-potential and particle diameter of the TiO2 suspensions in the 1×10−3mol/L KCl solution versus concentration of ATLAS G-3300. Open symbols: suspension was mixed for 10 min; closed ones—for 6 h.Figure optionsDownload as PowerPoint slide
Journal: Journal of Colloid and Interface Science - Volume 299, Issue 2, 15 July 2006, Pages 686–695