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AuthorThiehmed, Z.A.
AuthorAltahtamouni, T.M.
Available date2024-09-18T07:32:50Z
Publication Date2023
Publication NameJournal of Physical Chemistry C
ResourceScopus
ISSN19327447
URIhttp://dx.doi.org/10.1021/acs.jpcc.3c01836
URIhttp://hdl.handle.net/10576/59063
AbstractChemical vapor deposition (CVD) is one of the successful techniques for the synthesis of two-dimensional transition metal dichalcogenides (TMDCs) with different morphologies, sizes, and crystal qualities, which are beneficial for different research fields and applications. However, a controllable growth of 2D tungsten disulfide (WS2) with different orientations and sizes is still a challenging issue. In this study, we demonstrate a controllable synthesis of WS2 flakes by optimizing the CVD growth conditions. The results revealed that tuning the growth pressure successfully provides control over the orientation of the grown flakes. This monitoring allows for achieving vertically standing WS2 nanoflakes, with maximum exposure to the edge active sites. Aiming for enhanced photocatalytic activity, the construction of vertical WS2 nanoflake/TiO2 nanorod heterostructure was obtained by optimizing the height between the precursor and the substrate, which provides control over the size of the flakes. In addition, the achieved WS2/TiO2 heterostructures were evaluated as a photocatalyst for Rhodamine B degradation and photoelectrochemical activity (PEC).
SponsorThe authors acknowledge technical support from the Central Lab Unit and Center for Advanced Materials at Qatar University.
Languageen
PublisherAmerican Chemical Society
SubjectChemical vapor deposition
Degradation
Morphology
Photoelectrochemical cells
Sulfur compounds
Transition metals
Tungsten compounds
Chemical vapour deposition
Controllable growth
Crystal qualities
Dichalcogenides
Morphology control
Nano-flakes
Photocatalytic activities
Research applications
Research fields
Two-dimensional
Photocatalytic activity
TitleMorphology Control of WS2 Nanoflakes Using Chemical Vapor Deposition for Improving the Photocatalytic Activity of the WS2/TiO2 Heterostructure
TypeArticle
Pagination11600-11608
Issue Number24
Volume Number127
dc.accessType Full Text


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