Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 219, Issue -, Pages 30-35Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2017.07.049
Keywords
Yolk-shell hollow spheres; Titanium oxide; Pseudobrookite; Hetero-junction photocatalytic water oxidation
Funding
- Chinese Academy of Sciences (CAS)
- Academy of Sciences for the Developing World (TWAS) President's Fellowship Programme, CAS-TWAS Postgraduate Fellowship
Ask authors/readers for more resources
For the first time, controlled pseudobrookite phase as the yolk and titanium oxide as the shell of hollow spheres were synthesized for the photocatalytic water oxidation. Simple and facile sacrificial hard template strategy was utilized. Firstly, the distribution of TiO2 in the hollow spheres was controlled by loading aqueous solution of 2,3, and 5 mol/LTiCl4 precursor respectively onto carbonaceous template followed by annealing. To prove the Fe3+ ions radial penetration into the hydrophobic core of carbonaceous template, we optimized the ethanol to water ratio. The Fe2TiO5-TiO2 yolk-shell hollow spheres exhibited high oxygen evolution reaction (OER) rate up to 148 mu mol g(-1) h(-1) under UV-vis light. This was attributed to the better light harvesting due to the geometry of hollow sphere; charge separation by a thin shell yolk hetero-junction, a void cavity to access reaction solvent to reactive sites and the hetero-junction of Fe-O-Ti in the hollow structure. These findings suggest that our designed Fe2TiO5-TiO2 yolk-shell hollow spheres are beneficial for the photocatalytic water oxidation. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available