Multicomponent polymer coating to block photocatalytic activity of TiO2 nanoparticles

Wilson A. Lee; Nadine Pernodet; Bingquan Li; Chien H. Lin; Eli Hatchwell; Miriam H. Rafailovich

doi:10.1039/B709449C

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Chemical Communications

Issue 45, 2007

Urgent high quality communications from across the chemical sciences.

Impact Factor 6.169 100 Issues per Year Indexed in MEDLINE

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Multicomponent polymer coating to block photocatalytic activity of TiO₂ nanoparticles

Wilson A. Lee,*^a Nadine Pernodet,^a Bingquan Li,^b Chien H. Lin,^a Eli Hatchwell^a and Miriam H. Rafailovich^a

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Stony Brook University, Stony Brook, USA
E-mail: wlee@estee.com

Department of Earth & Environmental Engineering, Columbia University, NY, USA
E-mail: Bl2243@columbia.edu

Chem. Commun., 2007, 4815-4817

DOI: 10.1039/B709449C
Received 21 Jun 2007, Accepted 30 Aug 2007
First published online 12 Sep 2007

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Chemical grafting of anti-oxidant molecules with an additional hydrophobic polymer coating directly onto TiO₂ particle surfaces, using sonochemistry, is found to eliminate photocatalytic degradation enabling highly effective screening against UV radiation.

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Scheme 1: Proposed mechanism for binding the antioxidant, anionic polymer and the dimethicone derivative polymers to the TiO ₂ nanoparticles. Table 1: Characteristic parameters of the polymers and TiO ₂ particles used
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Wilson A. Lee
Nadine Pernodet
Bingquan Li
Chien H. Lin
Eli Hatchwell
Miriam H. Rafailovich

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Multicomponent polymer coating to block photocatalytic activity of TiO2 nanoparticles

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Multicomponent polymer coating to block photocatalytic activity of TiO₂ nanoparticles