| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 49461 | Catalysis Communications | 2015 | 4 Pages |
•One-dimensional Bi4Ti3O12/Bi2S3 hierarchical heterostructures are fabricated.•Bi2S3 nanorods can be in situ generated on the surface of Bi4Ti3O12 nanofibers.•Bi4Ti3O12/Bi2S3 heterostructures exhibit enhanced photocatalytic activity.•Well-matched band structure enhances the photo-induced charge separation.
One-dimensional Bi4Ti3O12 nanofibers were synthesized by an electrospinning method. Subsequently, through a simple in situ ion-exchange reaction between the Bi4Ti3O12 nanofibers and thioacetamide, Bi4Ti3O12/Bi2S3 hierarchical heterostructures were successfully fabricated. Controlled partial ion exchange brings about the close interconnection between the semiconductors to benefit the separation of carriers. The Bi4Ti3O12/Bi2S3 heterostructures exhibited enhanced photocatalytic performance under visible light. The improved photocatalytic activities are attributed to the visible light absorption enhanced by Bi2S3 and the formation of a heterojunction between Bi4Ti3O12 and Bi2S3, which can effectively accelerate the charge separation and transfer.
Graphical abstractBi4Ti3O12/Bi2S3 hierarchical heterostructures exhibit enhanced photocatalytic activity due to the photoinduced interfacial charge transfer.Figure optionsDownload full-size imageDownload as PowerPoint slide
