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Solvothermal synthesis of CNTs–WO3 hybrid nanostructures with high photocatalytic activity under visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
50979 46824 2012 5 PDF Available
Title
Solvothermal synthesis of CNTs–WO3 hybrid nanostructures with high photocatalytic activity under visible light
Abstract

The CNTs–WO3 hybrid nanostructures were fabricated by solvothermal synthesis. The morphologies, phase structures and optical properties of the nanostructures were investigated by TEM, XRD, UV–vis DRS and XPS respectively. The CNTs–WO3 hybrid nanostructures exist higher photocatalytic activity than pure WO3 nanosheets and the mechanical mixture of WO3 and CNTs for the degradation of methyl blue (MB) under visible light. This is attributed to their large surface area, absorption enhancement in visible light region and effective separation of electrons and holes. The presence of radical scavengers such as KI, Fe3 + and methanol in photocatalytic experiments demonstrates that photogenerated electrons are responsible for the photocatalytic degradation of MB on CNTs–WO3.

Graphical abstractThe uniform attachment of WO3 on CNTs and strong interaction between WO3 and CNTs facilitated the transfer of electrons and hampered the recombination of electrons and holes successfully on hybrid materials. ·OH radicals were main active species for the degradation of MB on CNTs–WO3, which likely mainly resulted from the reduction of photogenerated electrons.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► CNTs-WO3 hybrid nanostructures were obtained by a facile solvothermal method. ► The content of CNTs played an important role on controlling the morphologies. ► CNTs-WO3 hampered the recombination of electrons and holes successfully.

Keywords
CNTs–WO3; Hybrid nanostructures; Solvothermal; Photocatalytic degradation
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Solvothermal synthesis of CNTs–WO3 hybrid nanostructures with high photocatalytic activity under visible light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 17, 5 January 2012, Pages 99–103
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