Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets

Two-dimensional (2D) layered structure transition metal dichalcogenides (TMDs) has been attracted huge attention and importance for photocatalytic energy conversion due to their unique properties. In this paper, exfoliated hexagonal WS2 (e-h-WS2) platelets were successfully synthesized by liquid-pha...

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Main Authors: Koyyada, G., Prabhakar Vattikuti, S.V., Shome, S., Shim, J., Chitturi, V., Jung, J.H.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.22258 /
Published: 2019
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054365519&doi=10.1016%2fj.materresbull.2018.09.045&partnerID=40&md5=637c06dfafbab817bc28a802feba162c
http://eprints.utp.edu.my/22258/
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spelling utp-eprints.222582019-02-28T02:48:10Z Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets Koyyada, G. Prabhakar Vattikuti, S.V. Shome, S. Shim, J. Chitturi, V. Jung, J.H. Two-dimensional (2D) layered structure transition metal dichalcogenides (TMDs) has been attracted huge attention and importance for photocatalytic energy conversion due to their unique properties. In this paper, exfoliated hexagonal WS2 (e-h-WS2) platelets were successfully synthesized by liquid-phase exfoliation (LPE) process from hexagonal WS2 (h-WS2) platelets in DMF solvent. The photocatalytic activity of e-h-WS2 and h-WS2 catalysts were compared systematically for degradation of various organic dye such as Congo red (CR), Methyl orange (MO), Phenol red (PR) and Rhodamine B (RhB)) pollutants and hydrogen production under simulated solar light irradiation. UV-vis and N2 absorption-desorption studies revealed that e-h-WS2 have shown narrow band gap and higher specific surface area than that of h-WS2. Enhanced photocatalytic activity was obtained for e-h-WS2 than h-WS2 i.e. 1.71 fold enhancement for hydrogen production rate. More importantly, this synthetic exfoliated procedure may open up an opportunity to synthesize other transition metal sulfides. © 2018 Elsevier Ltd 2019 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054365519&doi=10.1016%2fj.materresbull.2018.09.045&partnerID=40&md5=637c06dfafbab817bc28a802feba162c Koyyada, G. and Prabhakar Vattikuti, S.V. and Shome, S. and Shim, J. and Chitturi, V. and Jung, J.H. (2019) Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets. Materials Research Bulletin, 109 . pp. 246-254. http://eprints.utp.edu.my/22258/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Two-dimensional (2D) layered structure transition metal dichalcogenides (TMDs) has been attracted huge attention and importance for photocatalytic energy conversion due to their unique properties. In this paper, exfoliated hexagonal WS2 (e-h-WS2) platelets were successfully synthesized by liquid-phase exfoliation (LPE) process from hexagonal WS2 (h-WS2) platelets in DMF solvent. The photocatalytic activity of e-h-WS2 and h-WS2 catalysts were compared systematically for degradation of various organic dye such as Congo red (CR), Methyl orange (MO), Phenol red (PR) and Rhodamine B (RhB)) pollutants and hydrogen production under simulated solar light irradiation. UV-vis and N2 absorption-desorption studies revealed that e-h-WS2 have shown narrow band gap and higher specific surface area than that of h-WS2. Enhanced photocatalytic activity was obtained for e-h-WS2 than h-WS2 i.e. 1.71 fold enhancement for hydrogen production rate. More importantly, this synthetic exfoliated procedure may open up an opportunity to synthesize other transition metal sulfides. © 2018 Elsevier Ltd
format Article
author Koyyada, G.
Prabhakar Vattikuti, S.V.
Shome, S.
Shim, J.
Chitturi, V.
Jung, J.H.
spellingShingle Koyyada, G.
Prabhakar Vattikuti, S.V.
Shome, S.
Shim, J.
Chitturi, V.
Jung, J.H.
Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
author_sort Koyyada, G.
title Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
title_short Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
title_full Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
title_fullStr Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
title_full_unstemmed Enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal WS2 platelets
title_sort enhanced solar light-driven photocatalytic degradation of pollutants and hydrogen evolution over exfoliated hexagonal ws2 platelets
publishDate 2019
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85054365519&doi=10.1016%2fj.materresbull.2018.09.045&partnerID=40&md5=637c06dfafbab817bc28a802feba162c
http://eprints.utp.edu.my/22258/
_version_ 1741196593044914176
score 11.62408

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