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Atmospheric-pressure cold plasma for fabrication of anatase–rutile mixed TiO2 with the assistance of ionic liquid

Paper ID Volume ID Publish Year Pages File Format Full-Text
53966 46990 2015 6 PDF Available
Title
Atmospheric-pressure cold plasma for fabrication of anatase–rutile mixed TiO2 with the assistance of ionic liquid
Abstract

•TiO2 nanoparticles were successfully fabricated by gas–liquid dielectric barrier discharge cold plasma at atmospheric pressure.•The TiO2 samples prepared by the DBD gas–liquid cold plasma were anatase–rutile mixed-phase TiO2 with phase junctions and mesoporous structure.•The influences of the nine imidazolium based ionic liquids and amount of [C2MIM]BF4 on the structure of the TiO2 nanoparticles were investigated.•The TiO2 nanoparticles exhibited high photocatalytic activity due to the appropriate anatase–rutile ratio and the high specific surface area.

An atmospheric-pressure dielectric barrier discharge (DBD) gas–liquid cold plasma was employed to synthesize TiO2 nanoparticles in an aqueous solution, with the assistance of nine imidazolium-based ionic liquids and using air as working gas. X-ray diffraction, N2 adsorption–desorption measurements, and transmission electron microscopy were used to characterize the samples. The results showed that the samples prepared by the DBD gas–liquid cold plasma were anatase–rutile mixed TiO2 with mesoporous structures. The effects of the cations, anions, and the amount of the ionic liquids on the structure of the TiO2 samples were investigated, and the corresponding mechanism of actions were analyzed. The photocatalytic activity of the TiO2 photocatalysts was evaluated by photodegradation of methylene blue. The TiO2 prepared with the assistance of 0.2 ml 1-ethyl-3-methylimidazolium tetrafluoroborate in Ti precursor solution exhibited the highest photocatalytic activity. Atmospheric-pressure DBD cold plasma was found to be a fast, simple, and environmentally friendly method for fabricating mixed-phase TiO2.

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Keywords
Dielectric barrier discharge (DBD); Gas–liquid cold plasma; Atmospheric pressure; Anatase–rutile mixed-phase TiO2; Ionic liquid
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Atmospheric-pressure cold plasma for fabrication of anatase–rutile mixed TiO2 with the assistance of ionic liquid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 256, Part 1, 1 November 2015, Pages 215–220
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