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Cu2O/TiO2 heterostructure nanotube arrays prepared by an electrodeposition method exhibiting enhanced photocatalytic activity for CO2 reduction to methanol

Paper ID Volume ID Publish Year Pages File Format Full-Text
50147 46783 2014 5 PDF Available
Title
Cu2O/TiO2 heterostructure nanotube arrays prepared by an electrodeposition method exhibiting enhanced photocatalytic activity for CO2 reduction to methanol
Abstract

•Cu2O/TNTs exhibit higher photocatalytic activity than TNTs under visible light.•Cu2O/TNTs exhibit high activity than TNTs in conversion of CO2 to methanol.•Cu2O/TiO2 heterostructure leads to its hgigher photocatalytic ability.

Cu2O/TiO2 composite nanotube arrays demonstrating enhanced photocatalytic performance were synthesized using an electrodeposition method to impregnate the p-type Cu2O into the n-type titanium dioxide nanotube arrays (TNTs). The morphological results confirmed that the TNTs are wrapped by the Cu2O nanoparticles and the UV–Vis absorption spectra showed that the Cu2O/TNTs display a better ability for visible light absorption compared to the pure TNTs. CO2 photocatalytic reduction experiments carried out by using Cu2O/TNT nanocomposites proved that Cu2O/TNTs exhibit high photocatalytic activity in conversion of CO2 to methanol, while pure TNT arrays were almost inactive. Furthermore, Cu2O/TNTs also exhibited augmented activity in degradation of target organic pollutant like acid orange (AO) under visible light irradiation. The ultra enhanced photocatalytic activity noticed by using Cu2O/TNTs in CO2 reduction and degradation of organic pollutant could be attributed to the formation of Cu2O/TiO2 heterostructures with higher charge separation efficiency.

Graphical abstractThe mechanism and the concentration and conversion efficiency of produced CH3OH of Cu2O/TNTs.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Cu2O/TiO2 heterostructures; Electrodeposition; CO2 photocatalytic reduction to methanol; Degradation of organic pollutants (dyes)
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Cu2O/TiO2 heterostructure nanotube arrays prepared by an electrodeposition method exhibiting enhanced photocatalytic activity for CO2 reduction to methanol
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 46, 10 February 2014, Pages 17–21
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