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Synthesis of Freestanding WS 2 Trees and Fibers on Au by Chemical Vapor Deposition (CVD)
Author(s) -
Sharma Subash,
Jaisi Balaram Paudel,
Sharma Kamal Prasad,
Araby Mona Ibrahim,
Kalita Golap,
Tanemura Masaki
Publication year - 2018
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201700566
Subject(s) - chemical vapor deposition , merge (version control) , materials science , nanostructure , chemical engineering , nanoparticle , nanotechnology , deposition (geology) , computer science , paleontology , sediment , engineering , information retrieval , biology
In this work, we report the synthesis of two new forms of WS 2 nanostructures – freestanding WS 2 trees and fibers on Au by chemical vapor deposition. It is observed that dislocation‐driven growth causes WS 2 crystals to grow and merge in both vertical and horizontal directions to form the pyramidal tree. During the formation of WS 2 fibers, the presence of two‐step growth was demonstrated. It is observed that sulphurization of WO 3 nanoparticle leads to formation of WS 2 rod in the first stage, followed by second stage in which selective growth causes some WS 2 layers grow faster compared to other ones leading to the formation of fibrous WS 2 structure. Fibers synthesized by our reported method have highly exposed WS 2 layers which can demonstrate interesting catalytic and edge related properties or can be functionalized for future applications.