Whiter, brighter, and more stable cellulose paper coated with TiO 2/SiO2 core/shell nanoparticles using a layer-by-layer approach

Cheng, Fei; Lorch, Mark; Sajedin, Seyed Mani; Kelly, Stephen M.; Kornherr, Andreas

Abstract

To inhibit the photocatalytic degradation of organic material supports induced by small titania (TiO2) nanoparticles, four kinds of TiO2 nanoparticles, that is, commercial P25-TiO2, commercial rutile phase TiO2, rutile TiO2 nanorods and rutile TiO2 spheres, prepared from TiCl4, were coated with a thin, but dense, coating of silica (SiO2) using a conventional sol-gel technique to form TiO2/SiO2 core/shell nanoparticles. These core/shell particles were deposited and fixed as a very thin coating onto the surface of cellulose paper samples by a wet-chemistry polyelectrolyte layer-by-layer approach. The TiO2/SiO2 nanocoated paper samples exhibit higher whiteness and brightness and greater stability to UV-bleaching than comparable samples of blank paper. There are many potential applications for this green chemistry approach to protect cellulosic fibres from UV-bleaching in sunlight and to improve their whiteness and brightness.

Citation

Cheng, F., Lorch, M., Sajedin, S. M., Kelly, S. M., & Kornherr, A. (2013). Whiter, brighter, and more stable cellulose paper coated with TiO 2/SiO2 core/shell nanoparticles using a layer-by-layer approach. ChemSusChem, 6(8), 1392-1399. https://doi.org/10.1002/cssc.201300305

• Journal Article Type: Article
• Online Publication Date: Jul 18, 2013
• Publication Date: Aug 14, 2013
• Deposit Date: Nov 13, 2014
• Journal: Chemsuschem
• Print ISSN: 1864-5631
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Issue: 8
• Pages: 1392-1399
• DOI: https://doi.org/10.1002/cssc.201300305
• Keywords: General Energy; General Materials Science; General Chemical Engineering; Environmental Chemistry
• Public URL: https://hull-repository.worktribe.com/output/471432
• Contract Date: Nov 13, 2014