Size controlled nanocrystalline TiO2 supported on mesostructured SBA-15 for better photocatalytic performance. (2017)

• Record Type: Journal Article
• Authors: Sahu, Dipti R.; Wang, Sheng-Chang; Hong, L.Y.; Huang, Jow-Lay
• Is Part Of: International journal of nano and biomaterials. Volume 7:Number 2(2017)
• Page Start: 150
• Page End: 161
• Publication Date: 2017
• Subjects: mesoporous -- titania -- SBA-15 -- nanoparticle -- pore size; Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Biomedical materials -- Periodicals; 620.505
• Languages: English
• ISSNs: 1752-8933

Abstract

Nanocrystalline TiO2 was prepared using sol gel hydrolysis and silica SBA-15 using organic solvent method. The synthesised SBA-15 served as the TiO2 support to reduce the TiO2 grain size and well-dispersed TiO2 for enhancement of photocatalytic activity. The synthesised titania/silica composites were characterised by X-ray diffraction, FTIR, TEM, UV-Visible spectroscopy, etc. TEM micrographs showed that the organic solute template method could prepare the titania-silica composite, and successfully embedded titania in SBA-15 channel. The mesoporous structure restrained the titania grain size within 5–7 nm which caused blue shift identified by UV-Vis spectra. The photo catalytic test of this material has been studied using methylene blue which shows improved performance than TiO2 . Titania loading on the silica matrix decreases the surface area of the support and there is systematic decrease in their pore volume values, as titania content increases.