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Electrospun Cr-doped Bi4Ti3O12/Bi2Ti2O7 heterostructure fibers with enhanced visible-light photocatalytic properties.
- Source :
- Journal of Materials Chemistry A; 2015, Vol. 3 Issue 12, p6586-6591, 6p
- Publication Year :
- 2015
-
Abstract
- A series of Cr-doped Bi<subscript>4</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript>/Bi<subscript>2</subscript>Ti<subscript>2</subscript>O<subscript>7</subscript> (BTO) heterostructure fibers have been synthesized via a one-step, facile and economical electrospinning/calcination process. SEM and TEM results reveal that the diameters of the as-prepared fibers are 100 ± 30 nm. The light adsorption of Bi<subscript>4</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript> and Bi<subscript>2</subscript>Ti<subscript>2</subscript>O<subscript>7</subscript> in the fibers has been remarkably improved by Cr doping. With increased Cr doping, XRD and XPS show that the amount of Bi<subscript>2</subscript>Ti<subscript>2</subscript>O<subscript>7</subscript> increases in the fibers. As a result, the Bi<subscript>4</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript>/Bi<subscript>2</subscript>Ti<subscript>2</subscript>O<subscript>7</subscript> heterojunction structure is enhanced, which further promotes the charge separation of photogenerated charge carriers. Photocatalytic tests indicated that the as-prepared Cr-doped Bi<subscript>4</subscript>Ti<subscript>3</subscript>O<subscript>12</subscript>/Bi<subscript>2</subscript>Ti<subscript>2</subscript>O<subscript>7</subscript> fibers exhibit good photocatalytic activity for photodegradation of methyl orange (MO) under visible-light irradiation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 3
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 101531837
- Full Text :
- https://doi.org/10.1039/c4ta06736c