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Facile surface treatment on Cu2O photocathodes for enhancing the photoelectrochemical response

Paper ID Volume ID Publish Year Pages File Format Full-Text
44748 46344 2016 6 PDF Available
Title
Facile surface treatment on Cu2O photocathodes for enhancing the photoelectrochemical response
Abstract

•Surface treatment for Cu2O photocathodes using trisodium citrate.•Establish surface modification to optimize the efficiency of energy conversion.•Get rid of using complicated surface passivating procedures and catalysts.•Obtained photocurrent approaches a very high value in Cu2O-based photocathodes.

P-type Cu2O has long been regarded as an advantageous material in photoelectrochemistry, owing to the suitable band gap structure and cost-effective production. However, such promising material is suffering from corrosion in aqueous electrolytes. To address this issue and attain a high photoelectrochemical performance, protective oxide layers and expensive catalysts have to be adopted. The complicacy of such additional procedures, however, limits the further applications. Instead of utilizing surface protecting oxide layers and expensive catalysts, herein, we report that the surface treatment of Cu2O photocathodes using trisodium citrate (TSC) could also greatly enhance the photoelectrochemical performance. In comparison with the electrode without TSC, the photocathode of FTO/Au/Cu2O/TSC/TiO2/Pt presents a pronounced increment in photocurrent with a factor of about 2. Therefore, this paper provides a novel but convenient methodology to optimize the performance of solar energy conversion systems employing p-type Cu2O by modifying the surface with functional molecules.

Graphical abstractInstead of utilizing surface protecting oxide layers and expensive catalysts, we report that the surface treatment of Cu2O photocathodes using trisodium citrate (TSC) could also greatly enhance the photoelectrochemical performance.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
P-type Cu2O; Surface treatment; Photoelectrochemistry; Photocathode
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Facile surface treatment on Cu2O photocathodes for enhancing the photoelectrochemical response
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 198, 5 December 2016, Pages 398–403
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