Bi4Ti3O12 nanosheets/TiO2 submicron fibers heterostructures: in situ fabrication and high visible light photocatalytic activity
- 1 April 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 21 (19), 6922-6927
- https://doi.org/10.1039/c1jm10343a
Abstract
In this paper, a facile two-step synthesis route combining an electrospinning method and hydrothermal technique has been accepted as a straightforward protocol for the exploitation of Bi4Ti3O12 /TiO2 heterostructures which are composed of Bi4Ti3O12 nanosheets on the surface of TiO2 submicron fibers. The thickness of the as-grown nanosheets was about 20 nm and the size of the nanosheets increase with the increase of precursor concentration. Photocatalytic tests display that the Bi4Ti3O12 /TiO2 heterostructures possess a much higher degradation rate of rhodamine B (RB) than the unmodified TiO2 submicron fibers under visible light. The enhanced photocatalytic activity can be attributed to the extended absorption in the visible light region resulting from the Bi4Ti3O12 nanosheets, and the effective separation of photogenerated carriers driven by the photoinduced potential difference generated at the Bi4Ti3O12 /TiO2 junction interface.Keywords
This publication has 44 references indexed in Scilit:
- Shape-Enhanced Photocatalytic Activity of Single-Crystalline Anatase TiO2 (101) NanobeltsJournal of the American Chemical Society, 2010
- An Efficient Photocatalyst Structure: TiO2(B) Nanofibers with a Shell of Anatase NanocrystalsJournal of the American Chemical Society, 2009
- Water−Dichloromethane Interface Controlled Synthesis of Hierarchical Rutile TiO2 Superstructures and Their Photocatalytic PropertiesInorganic Chemistry, 2009
- Heterogeneous photocatalytic treatment of organic dyes in air and aqueous mediaJournal of Photochemistry and Photobiology C: Photochemistry Reviews, 2008
- Anatase TiO2 single crystals with a large percentage of reactive facetsNature, 2008
- Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and ApplicationsChemical Reviews, 2007
- Photoelectrochemical cellsNature, 2001
- Titanium dioxide photocatalysisJournal of Photochemistry and Photobiology C: Photochemistry Reviews, 2000
- Environmental Applications of Semiconductor PhotocatalysisChemical Reviews, 1995
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972