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Direct Synthesis of Electrowettable Carbon Nanowall–Diamond Hybrid Materials from Sacrificial Ceramic Templates Using HFCVD
Author(s) -
Silva Eduardo L.,
Mishra Yogendra Kumar,
Fernandes António J. S.,
Silva Rui F.,
Strobel Julian,
Kienle Lorenz,
Adelung Rainer,
Oliveira Filipe J.,
Zheludkevich Mikhail L.
Publication year - 2017
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201700019
Subject(s) - materials science , nanotechnology , diamond , nanopillar , chemical vapor deposition , carbon fibers , nanomaterials , ceramic , nanostructure , composite number , composite material
Carbon‐on‐carbon materials carry the potential to be a major disruptive technology in fields like energy storage and electronics. In the present work, hot filament chemical vapor deposition (HFCVD) is used to synthesize carbon nanowall (CNW) tetrapods coupled to nanocrystalline diamond in a 3D hybrid network form. The CNW/diamond phase proportion as well as the structural morphology can be easily adjusted by the CVD parameters, allowing a single‐step synthesis of CNW micro‐ and nanopillars or CNW/diamond 3D hybrid materials, in the powder form or as interconnected free‐standing specimens. Additionally, the direct incorporation of SnO 2 catalyst particles during the one‐step CVD process is demonstrated. µ‐Raman and electron microscopy are used to understand the evolution of the morphological characteristics associated to the growth mechanism. The electrowettability behavior of the novel CNW/diamond hybrid material is demonstrated by electrochemical polarization studies. Such multifunctional carbon‐based hybrid 3D nanomaterials can find promising applications in advanced technologies such as energy storage.