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

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...

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Main Authors:	Tho Truong Nguyen, Thi Minh Cao, Narmina O. Balayeva, Viet Van Pham
Format:	Article
Language:	English
Published:	MDPI AG 2021-07-01
Series:	Catalysts
Subjects:	photoelectrochemical polyvinyl alcohol oxygen evolution reaction MoS<sub>2</sub>/TiO<sub>2</sub> nanotube arrays
Online Access:	https://www.mdpi.com/2073-4344/11/7/857

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record_format	Article
spelling	doaj-7441f4e84fcf486191bb305facf3be682021-07-23T13:34:25ZengMDPI AGCatalysts2073-43442021-07-011185785710.3390/catal11070857Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting PerformanceTho Truong Nguyen0Thi Minh Cao1Narmina O. Balayeva2Viet Van Pham3Ho Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, VietnamHo Chi Minh City University of Technology (HUTECH), 475A Dien Bien Phu Street, Binh Thanh District, Ho Chi Minh City 700000, VietnamInstitute of Technical Chemistry, Gottfried Wilhelm Leibniz University of Hannover, Callinstr. 5, D-30167 Hannover, GermanyFaculty of Materials Science and Technology, University of Science, VNU-HCM, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City 700000, VietnamSolar-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 MoS<sub>2</sub> and TiO<sub>2</sub> 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 MoS<sub>2</sub>/TNAs, exhibiting linear sweeps in an anodic direction with the current density over 65 μA/cm<sup>2</sup> at 0 V vs. Ag/AgCl. Besides, the photoresponse ability of MoS<sub>2</sub>/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 MoS<sub>2</sub>/TNAs materials.https://www.mdpi.com/2073-4344/11/7/857photoelectrochemicalpolyvinyl alcoholoxygen evolution reactionMoS<sub>2</sub>/TiO<sub>2</sub> nanotube arrays
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Tho Truong Nguyen Thi Minh Cao Narmina O. Balayeva Viet Van Pham
spellingShingle	Tho Truong Nguyen Thi Minh Cao Narmina O. Balayeva Viet Van Pham Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance Catalysts photoelectrochemical polyvinyl alcohol oxygen evolution reaction MoS<sub>2</sub>/TiO<sub>2</sub> nanotube arrays
author_facet	Tho Truong Nguyen Thi Minh Cao Narmina O. Balayeva Viet Van Pham
author_sort	Tho Truong Nguyen
title	Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance
title_short	Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance
title_full	Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance
title_fullStr	Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance
title_full_unstemmed	Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance
title_sort	thermal treatment of polyvinyl alcohol for coupling mos<sub>2</sub> and tio<sub>2</sub> nanotube arrays toward enhancing photoelectrochemical water splitting performance
publisher	MDPI AG
series	Catalysts
issn	2073-4344
publishDate	2021-07-01
description	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 MoS<sub>2</sub> and TiO<sub>2</sub> 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 MoS<sub>2</sub>/TNAs, exhibiting linear sweeps in an anodic direction with the current density over 65 μA/cm<sup>2</sup> at 0 V vs. Ag/AgCl. Besides, the photoresponse ability of MoS<sub>2</sub>/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 MoS<sub>2</sub>/TNAs materials.
topic	photoelectrochemical polyvinyl alcohol oxygen evolution reaction MoS<sub>2</sub>/TiO<sub>2</sub> nanotube arrays
url	https://www.mdpi.com/2073-4344/11/7/857
work_keys_str_mv	AT thotruongnguyen thermaltreatmentofpolyvinylalcoholforcouplingmossub2subandtiosub2subnanotubearraystowardenhancingphotoelectrochemicalwatersplittingperformance AT thiminhcao thermaltreatmentofpolyvinylalcoholforcouplingmossub2subandtiosub2subnanotubearraystowardenhancingphotoelectrochemicalwatersplittingperformance AT narminaobalayeva thermaltreatmentofpolyvinylalcoholforcouplingmossub2subandtiosub2subnanotubearraystowardenhancingphotoelectrochemicalwatersplittingperformance AT vietvanpham thermaltreatmentofpolyvinylalcoholforcouplingmossub2subandtiosub2subnanotubearraystowardenhancingphotoelectrochemicalwatersplittingperformance
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Thermal Treatment of Polyvinyl Alcohol for Coupling MoS<sub>2</sub> and TiO<sub>2</sub> Nanotube Arrays toward Enhancing Photoelectrochemical Water Splitting Performance

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