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Synergetic effect of TiO2 as co-catalyst for enhanced visible light photocatalytic reduction of Cr(VI) on MoSe2

Paper ID Volume ID Publish Year Pages File Format Full-Text
38787 45791 2016 7 PDF Available
Title
Synergetic effect of TiO2 as co-catalyst for enhanced visible light photocatalytic reduction of Cr(VI) on MoSe2
Abstract

•MoSe2-TiO2 composites were synthesized via a facile solvothermal method.•TiO2 acts as co-catalyst to separate the photo-generated electron-hole pairs.•MoSe2-TiO2 composites exhibited enhanced photocatalytic activity.•A high Cr(VI) reduction rate of 91% was achieved under visible light irradiation.

MoSe2-TiO2 composites were successfully synthesized via a facile solvothermal method. Their morphology, structure and photocatalytic activity in the reduction of Cr(VI) were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV–vis absorption spectroscopy, X-ray photoelectron spectroscopy and electrochemical impedance spectra, respectively. The results show that the introduction of TiO2 into MoSe2 boosts the light harvesting efficiency and charge separation and transfer due to their synergistic effect, thus enhancing the visible light photocatalytic activity of MoSe2 with a maximum Cr(VI) reduction rate of 91% at 120 min compared with pure MoSe2 (61%) and TiO2 (5%).

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Keywords
Transition metal dichalcogenides; MoSe2; TiO2; Cr(VI); Photocatalysis
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Synergetic effect of TiO2 as co-catalyst for enhanced visible light photocatalytic reduction of Cr(VI) on MoSe2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 521, 5 July 2016, Pages 19–25
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
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