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In situ ion exchange synthesis of the Bi4Ti3O12/Bi2S3 heterostructure with enhanced photocatalytic activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
49461 46746 2015 4 PDF Available
Title
In situ ion exchange synthesis of the Bi4Ti3O12/Bi2S3 heterostructure with enhanced photocatalytic activity
Abstract

•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

Keywords
Bi4Ti3O12; Bi2S3; Heterostructures; Ion exchange; Photocatalytic
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In situ ion exchange synthesis of the Bi4Ti3O12/Bi2S3 heterostructure with enhanced photocatalytic activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 60, 5 February 2015, Pages 23–26
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
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Price after discount Only $4.95
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Online Support
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