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Essential roles of defects in pure graphene/Cu2O photocatalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
49938 46774 2016 6 PDF Available
Title
Essential roles of defects in pure graphene/Cu2O photocatalyst
Abstract

•A composite composed of CVD-grown graphene and Cu2O was prepared for photo-catalyst.•Catalytic activity was dependent on the abundance of defects in graphene flakes.•The roles of defects in enhancing the catalytic performance were demonstrated.

The pure graphene flakes with different abundance of defects were synthesized by CVD method to successfully prepare the graphene/Cu2O composites for the photocatalytic degradation of methyl orange (MO) under visible light irradiation. The results illustrate that catalytic activity was strongly dependent on the abundance of defects in graphene flakes. The highest activity was measured to be 80.10% in 30 min light irradiation. Furthermore, we demonstrate that the defects in graphene could facilitate to construct an efficient interface between graphene and Cu2O for narrowing the band gap of original Cu2O semiconductor and inhibiting the recombination of photo-generated electron–hole pairs.

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Keywords
Graphene/Cu2O composites; Defects; Photocatalysis; Interface
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 76, 10 February 2016, Pages 7–12
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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Full-text PDF Download
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