Journal article
Photoflocculation of TiO2 Microgel Mixed Suspensions
Abstract
Photocatalytic TiO 2 was derivatized with an amino silane to give a positively charged colloidal suspension in water. UV irradiation of the cationic titania oxidized the organo silane coating converting the titania to a negatively charged colloid. Irradiation of mixed suspensions of cationic titania and cationic polyvinylamine microgel induced catastrophic flocculation. Electrophoresis and XPS evidence suggests that the UV removed the amine …
Authors
Ye L; Miao C; Brook MA; Pelton R
Journal
Langmuir, Vol. 24, No. 17, pp. 9341–9343
Publisher
American Chemical Society (ACS)
Publication Date
September 2, 2008
DOI
10.1021/la801514t
ISSN
0743-7463