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Surface Defects as a Tool to Solubilize and Functionalize WS 2 Nanotubes
Author(s) -
Spetter Dmitri,
Hoshyargar Faegheh,
Sahoo Jugal Kishore,
Tahir Muhammad Nawaz,
Branscheid Robert,
Barton Bastian,
Panthöfer Martin,
Kolb Ute,
Tremel Wolfgang
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201601361
Subject(s) - high resolution transmission electron microscopy , nanowire , raman spectroscopy , chemical engineering , nanoparticle , nanotechnology , tungsten disulfide , oxide , nanotube , solvothermal synthesis , chemistry , metal , materials science , nanorod , graphene , transition metal , transmission electron microscopy , carbon nanotube , inorganic chemistry , organic chemistry , catalysis , physics , engineering , optics
Layered transition metal dichalcogenides contain a number of crystal defects that significantly change their properties and are beneficial or detrimental for a specific application. We have prepared defect‐rich multiwalled WS 2 nanotubes by reductive sulfidization of W 18 O 49 nanowires that were obtained solvothermally from tungsten chloride in different alcohols. The synthesis of the W 18 O 49 nanowires was monitored, and their morphological characteristics (e.g., length, rigidity, and aspect ratio) are described in detail. The effect of the morphology of the nanowires on the synthesis of WS 2 nanotubes was investigated in order to obtain WS 2 nanotubes that are highly solvent‐dispersible. Dispersions of the WS 2 nanotubes in organic solvents are very stable for several days. The nanotubes were easily functionalized with noble metal, metal oxide, and Janus‐type metal@metal oxide nanoparticles. The synthesis of nanowires and nanotubes and the immobilization of the nanoparticles were demonstrated by TEM, high‐resolution TEM (HRTEM) combined with energy‐dispersive X‐ray spectroscopy (EDX), electron diffraction (ED), XRD, and Raman spectroscopy.