ICWES15 - Preparation of Mesoporous Titania Photocatalyst for Water Treatment Application. Presented by Dr Xingdong Wang, AUST
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ICWES15 - Preparation of Mesoporous Titania Photocatalyst for Water Treatment Application. Presented by Dr Xingdong Wang, AUST
- 1. Preparation of Mesoporous Titania Photocatalyst for Water Treatment Application Xingdong Wang 1 , David R.G.Mitchell 2 , Patrick Hartley 1 and Rachel A. Caruso 1,3 1 CMSE, CSIRO Material Science and Engineering, 2 Australia Center for Microscopy and Microanalysis, The University of Sydney, 3 PFPC, School of Chemistry, The University of Melbourne
- 6. TiCl 3 Amorphous TiO 2 Crystallized TiO 2 Synthesis scheme Hydrolysis & condensation NaOH Washing Solvothermal: 160 ° C, 16h NaOH (mol) 0.041 0.054 0.059 0.068 0.070 0.073 0.076 Solution pH 0.25 0.56 0.80 7.92 7.98 9.67 11.58
- 7. Surface area
- 9. Morphology-SEM 0.25 7.98 11.58
- 10. Morphology and porosity - T EM 0.25 11.58 7.98
- 11. Crystal phase Anatase Rutile Titanate Acid condition: rutile phase Neutral condition: anatase phase (slight brookite) Alkaline condition: titanate phase 8 Å
- 12. Surface hydroxyl groups (FT-IR) Ti-OH Ti…H 2 O
- 13. Diffuse UV-Vis and band gap
- 14. Diffuse UV-vis and Band gap pH 0.25 0.56 7.92 7.98 9.67 11.58 P25 Bg (eV) 3.00 2.98 3.13 3.15 3.25 3.22 3.10
- 15. Adsorption test Test conditions: 100 ppm In the dark: shaking overnight (pH 5.10)
- 17. Photocatalytic activity Test conditions: 12.5 ppm of MB Visible light: 120 min at pH 5.10 pH
- 20. CSIRO Materials Science and Engineering Dr Xingdong Wang Ph: +61 3 9545 2689 Email: [email_address] Web: www.csiro.au/cmse CSIRO Materials Science and Engineering Dr Rachel Caruso OCE Science leader | Advanced Porous Materials Ph: +61 3 9545 7960 Email: [email_address] Web: www.csiro.au/cmse Thanks for your attention !