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Microwave-assisted solvothermal synthesis of Bi4O5I2 hierarchical architectures with high photocatalytic performance

Paper ID Volume ID Publish Year Pages File Format Full-Text
53319 46962 2016 8 PDF Available
Title
Microwave-assisted solvothermal synthesis of Bi4O5I2 hierarchical architectures with high photocatalytic performance
Abstract

•Oxygen-rich Bi4O5I2 fabricated by a microwave-assisted solvothermal method.•The resultant Bi4O5I2 with high specific surface area and small thickness.•The Bi4O5I2 with abundant active sites and strong internal electric field.•The Bi4O5I2 shows high photocatalytic activity for phenol degradation.

TiO2 usually exhibits good photocatalytic activity and stability, but requires UV irradiation (smaller than 387 nm) for effective photocatalytic reactions, thus greatly limiting its application range. It is highly desirable to develop visible-light driven photocatalysts with high photocatalytic performance under sunlight or daylight lamp irradiation. Herein, Bi4O5I2 hierarchical architectures with high visible-light photocatalytic activity were fabricated by a microwave-assisted solvothermal method. Oil bath synthesis and direct hydrolysis were also applied to prepare bismuth oxyiodides for comparison. The Bi4O5I2 hierarchical architectures obtained by microwave treatment exhibited the highest photocatalytic activity toward phenol degradation under visible-light irradiation. This is attributed to its more surface active sites and strongest internal electric field, originating from the highest specific surface area and thinnest nanosheet morphology, respectively. The prepared Bi4O5I2 hierarchical architectured photocatalysts may find potential application in catalysis, separation technology, solar cell, biomedical engineering, and nanotechnology. This work will provide some new insight into the design and fabrication of visible-light photocatalysts.

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Keywords
Bismuth oxyiodide; Microwave synthesis; Visible-light photocatalysis; Nanosheet; Internal electric field
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 264, 15 April 2016, Pages 221–228
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
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us