Defect-engineered TiO2 Hollow Spiny Nanocubes for Phenol Degradation under Visible Light Irradiation
Open Access
- 12 April 2018
- journal article
- research article
- Published by Springer Science and Business Media LLC in Scientific Reports
- Vol. 8 (1), 1-10
- https://doi.org/10.1038/s41598-018-24353-8
Abstract
Herein, we mainly report a strategy for the facile synthesis of defect-engineered F-doped well-defined TiO2 hollow spiny nanocubes, constructed from NH4TiOF3 as precursor. The topological transformation of NH4TiOF3 mesocrystal is accompanied with fluorine anion releasing, which can be used as doping source to synthesize F-doped TiO2. Our result shows that the introduction of oxygen vacancies (Vo’s) and F dopant can be further achieved by a moderate photoreduction process. The as prepared sample is beneficial to improve photocatalystic degradation and Photoelectrochemical (PEC) efficiency under visible light irradiation. And this improvement in photocatalytic and photoelectrocatalytic performance can be ascribed to the significant enhancement of visible light absorption and separation of excited charges resulted from the presence of oxygen vacancies, F− ions and hollow structure of TiO2.Keywords
This publication has 42 references indexed in Scilit:
- Manipulating the Formation of NH4TiOF3 Mesocrystals: Effects of Temperature, Surfactant, and pHCrystal Growth & Design, 2012
- Nonaqueous Synthesis of TiO2 Nanocrystals Using TiF4 to Engineer Morphology, Oxygen Vacancy Concentration, and Photocatalytic ActivityJournal of the American Chemical Society, 2012
- Rational Design of 3D Dendritic TiO2 Nanostructures with Favorable ArchitecturesJournal of the American Chemical Society, 2011
- Hydrogen-Treated TiO2 Nanowire Arrays for Photoelectrochemical Water SplittingNano Letters, 2011
- Tunable Photocatalytic Selectivity of Hollow TiO2 Microspheres Composed of Anatase Polyhedra with Exposed {001} FacetsJournal of the American Chemical Society, 2010
- Performance of the photo-Fenton process in the degradation of a model azo dye mixturePhotochemical & Photobiological Sciences, 2010
- Enhancement of Photocatalytic Activity of Mesporous TiO2 Powders by Hydrothermal Surface Fluorination TreatmentThe Journal of Physical Chemistry C, 2009
- A Facile Synthesis of Uniform NH4TiOF3Mesocrystals and Their Conversion to TiO2MesocrystalsJournal of the American Chemical Society, 2008
- Mesoporous Titania Spheres with Tunable Chamber Stucture and Enhanced Photocatalytic ActivityJournal of the American Chemical Society, 2007
- Core−Shell Polystyrene/Zeolite A MicrobeadsChemistry of Materials, 2002