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Enhancement of photocatalytic activity of synthesized ZnO nanoparticles with oxygen plasma treatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
53789 46984 2016 6 PDF Available
Title
Enhancement of photocatalytic activity of synthesized ZnO nanoparticles with oxygen plasma treatment
Abstract

•ZnO nanoparticles were synthesized by the spray-pyrolysis method.•Oxygen plasma treatment increase OH radicals on their surfaces.•Oxygen plasma treated ZnO nanoparticles was enhanced by about 60%.•OH radicals and molecular H2O on the ZnO surface are enhanced by O2 plasma treatment.

ZnO nanoparticles were synthesized by the spray-pyrolysis method. There were exposed to oxygen plasma treatment to increase OH radicals on their surfaces. ZnO nanoparticles were spherical grains with a narrow size range of about 7–10 nm, and these small particles agglomerated together to form larger clusters. Synthesized ZnO nanoparticles and a p-25 mixed MB solution exposed to UV illustrate that p-25 has a better photo-degradation response than synthesized ZnO nanoparticles using UV light. Therefore, we did oxygen plasma treatment to increase OH radicals on the surface of synthesized ZnO nanoparticles. As a result, the photocatalytic activity of oxygen plasma treated ZnO nanoparticles was enhanced by about 60% based on the absorption peak of the decomposed MB solution. Also, we have analyzed the surface of oxygen plasma treated ZnO nanoparticles by XPS. Results showed that OH radicals and molecular water on the ZnO surface are enhanced by oxygen plasma treatment. Also, treatment reduced oxygen and zinc vacancies on the treated ZnO surface.

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Keywords
ZnO; Oxygen plasma; OH radical; Photocatalyst; X-ray photoelectron spectroscopy
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Enhancement of photocatalytic activity of synthesized ZnO nanoparticles with oxygen plasma treatment
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 265, 1 May 2016, Pages 84–89
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
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Online Support
Any Questions? feel free to contact us