Photoflocculation of TiO2 Microgel Mixed Suspensions.

Photoflocculation of TiO2 Microgel Mixed Suspensions. Research Abstract Details 

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Photoflocculation of TiO2 Microgel Mixed Suspensions. Abstract Text:

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 groups from the titania resulting in heteroflocculation of anionic titania with cationic microgel particles.

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Photoflocculation of TiO2 Microgel Mixed Suspensions. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Langmuir : the ACS journal of surfaces and colloid

VOLUME: 24

Page Numbers: 9341-3

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ISSN: 0743-7463

DAY: 22

MONTH: 07

YEAR: 2008

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LANGUAGE: eng

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Grant and Affiliation Information for Photoflocculation of TiO2 Microgel Mixed Suspensions.

AFFILIATION: Departments of Chemical Engineering and Chemistry, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4L7 Canada peltonrh@mcmaster.ca.

Country: United States

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MEDLINETA: Langmuir

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