Selective hydrothermally synthesis of hexagonal WS2 platelets and their photocatalytic performance under visible light irradiation

Hexagonal WS2 platelets have been synthesized via simple hydrothermal synthesis method. The hexagonal WS2 is formed by the oriented attachment (OA)-self-assembly (SA). The thickness of the WS2 platelets was between ∼20 and 100 nm. The specific surface area of these platelets is 94.63 m2 g−1. The hex...

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Bibliographic Details
Published inSuperlattices and microstructures Vol. 94; pp. 39 - 50
Main Authors Vattikuti, S.V. Prabhakar, Byon, Chan, Chitturi, Veerendra
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2016
Subjects
Hydrothermal method
Microstructure
Morphology
Photocatalyst
WS2
Hydrothermal method
Microstructure
Photocatalyst
Morphology
WS2
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Summary:Hexagonal WS2 platelets have been synthesized via simple hydrothermal synthesis method. The hexagonal WS2 is formed by the oriented attachment (OA)-self-assembly (SA). The thickness of the WS2 platelets was between ∼20 and 100 nm. The specific surface area of these platelets is 94.63 m2 g−1. The hexagonal WS2 platelets exhibited excellent photocatalytic activity compared to irregular WS2 platelets for the degradation of rhodamine B (RhB) under visible light irradiation. This work paves the method for designing hexagonal shaped WS2 platelets with great potential for a wide spectrum of applications in photocatalysis. Moreover, this synthetic procedure may open up an opportunity to tailor the morphologies of the other nanomaterials especially transition metal sulfides. [Display omitted] •Hexagonal WS2 platelets synthesized hydrothermally with optimized process parameter.•Hexagonal WS2 is formed by the oriented attachment (OA)-self-assembly (SA).•Morphological dependent photocatalytic behavior of WS2 platelets has been discussed.•Comparative study of different WS2 microstructures on pollutant degradation under visible light.•Synthetic procedure may open up an opportunity to tailor the morphologies of WS2.
ISSN:0749-6036
1096-3677
DOI:10.1016/j.spmi.2016.03.042