Back to Search
Start Over
Paper-TiO2 composite: An effective photocatalyst for 2-propanol degradation in gas phase.
- Source :
-
Journal of Photochemistry & Photobiology A: Chemistry . Jan2018, Vol. 350, p142-151. 10p. - Publication Year :
- 2018
-
Abstract
- Two simple routes for the synthesis of a paper-TiO 2 composite were tuned up and the efficiency of the resulting paper-TiO 2 photocatalyst was investigated in the 2-propanol oxidation in gas phase. The first route involved the in-situ generation over the sheet of paper of a TiO 2 layer starting from a solution of Ti(OBu) 4 in tert -butanol/acetic acid, followed by hydrothermal treatment at 120 °C for 3 h. The sample was labelled as paper-TiO 2 (H). The second approach was based on the adsorption on the paper of a ready-made suspension of titania nanoparticles (TiO 2 sol), generated in autoclave at 140 °C and stable in acid medium at pH < 3. The sample was labelled as paper-TiO 2 (S). Evidence of the generation of crystalline TiO 2 was confirmed by Raman spectroscopy and the morphology of the TiO 2 layer was analyzed by FE-SEM microscopy. The optical properties of the two paper-TiO 2 samples and the surface and bulk chemical compositions were studied by UV–vis, XPS spectroscopies and TGA analysis as well. The surface properties of the two paper-TiO 2 composites in term of wettability were also investigated through water contact angle measurements. The photocatalytic oxidation of 2-propanol in gas phase, under simulated sunlight irradiation in presence of the two paper-TiO 2 samples was studied at room temperature and compared with a commercial sample, TiO 2 P25 (Evonik). Both functionalization approaches led to a photoactive paper capable of the complete decomposition of 2-propanol in CO 2 and H 2 O within acceptable timescale. The photocatalytic performances of both paper-TiO 2 composites compare favorably with TiO 2 P25. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10106030
- Volume :
- 350
- Database :
- Academic Search Index
- Journal :
- Journal of Photochemistry & Photobiology A: Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 125781570
- Full Text :
- https://doi.org/10.1016/j.jphotochem.2017.09.074