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Article

Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

1
Ho Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, Vietnam
2
Faculty of Materials Science and Technology, University of Science, VNU-HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City 700000, Vietnam
3
Vietnam National University—Ho Chi Minh City, Thu Duc District, Ho Chi Minh City 700000, Vietnam
4
Institute of Technical Chemistry, Gottfried Wilhelm Leibniz University of Hannover, Callinstr. 5, D-30167 Hannover, Germany
*
Authors to whom correspondence should be addressed.
Academic Editors: Giuseppina Pinuccia Cerrato and Edward G. Gillan
Received: 27 May 2021 / Revised: 15 July 2021 / Accepted: 16 July 2021 / Published: 17 July 2021
(This article belongs to the Special Issue Recent Advances in Visible-Light-Driven Heterogeneous Photocatalysis)
Solar-driven photoelectrochemical (PEC) water splitting, using semiconductor photoelectrodes, is considered a promising renewable energy source and solution for environmental sustainability. Herein, we report polyvinyl alcohol (PVA) as a binder material for combining MoS2 and TiO2 nanotube arrays (TNAs) to improve PEC water splitting ability. By a thermal treatment process, the formation of the π conjunction in the PVA structure enhanced the PEC performance of MoS2/TNAs, exhibiting linear sweeps in an anodic direction with the current density over 65 μA/cm2 at 0 V vs. Ag/AgCl. Besides, the photoresponse ability of MoS2/TNAs is approximately 6-fold more significant than that of individual TNAs. Moreover, a Tafel slope of 140.6 mV/decade has been obtained for the oxygen evolution reaction (OER) of MoS2/TNAs materials. View Full-Text
Keywords: photoelectrochemical; polyvinyl alcohol; oxygen evolution reaction; MoS2/TiO2 nanotube arrays photoelectrochemical; polyvinyl alcohol; oxygen evolution reaction; MoS2/TiO2 nanotube arrays
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MDPI and ACS Style

Nguyen, T.T.; Cao, T.M.; Balayeva, N.O.; Pham, V.V. Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance. Catalysts 2021, 11, 857. https://0-doi-org.brum.beds.ac.uk/10.3390/catal11070857

AMA Style

Nguyen TT, Cao TM, Balayeva NO, Pham VV. Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance. Catalysts. 2021; 11(7):857. https://0-doi-org.brum.beds.ac.uk/10.3390/catal11070857

Chicago/Turabian Style

Nguyen, Tho T., Thi M. Cao, Narmina O. Balayeva, and Viet V. Pham 2021. "Thermal Treatment of Polyvinyl Alcohol for Coupling MoS2 and TiO2 Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance" Catalysts 11, no. 7: 857. https://0-doi-org.brum.beds.ac.uk/10.3390/catal11070857

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