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Journal of Materials Science and Nanotechnology | Volume 3
February 25-26, 2019 | Paris, France
Materials Science and Engineering
2
nd
International Conference on
Vertical graphene network as platform for electrochemical and bio applications
Mineo Hiramatsu
1
, Keigo Takeda
1
, Hiroki Kondo
1
and
Masaru Hori
2
1
Meijo University, Japan
2
Nagoya University, Japan
G
raphene (monolayer and few layers) is a two-dimensional
material with the large anisotropy between in-plane and
out-of-plane directions. Carbon nanowalls (CNWs) are few-layer
graphenes standing vertically on a substrate forming a self-
supported network of 3-dimensional wall structures. This kind
of carbon nanostructure is also called as carbon nanoflakes,
carbon nanosheets, graphene nanosheets, and graphene
nanowalls. CNWs are modified with several types of surface
termination and decoration with metal nanoparticles and
biomolecules. In addition, the potential window of CNW film is
as wide as that of boron-doped diamond electrode. The maze-
like architecture of CNWs with large-surface-area graphene
planes can be suitable for the platform in electrochemical and
biosensing applications. For the energy storage and power
generation applications, CNW films can be potentially used as
electrodes of capacitor, secondary battery, dye-sensitized solar
cell, polymer electrolyte fuel cell, and implantable glucose fuel
cell.
CNWsandsimilar vertical graphenematerials canbesynthesized
by plasma enhanced chemical vapor deposition techniques
on heated substrates (600-800˚C) employing methane and
hydrogen mixtures. After synthesizing CNWs, the surface of
CNWs was decorated with Pt nanoparticles by the reduction of
chloroplatinic acid. It was confirmed that Pt-supported CNWs
as electrodes of fuel cell had excellent durability comapred with
the conventional carbon black. We report the current status
of fabrication and structure control of CNWs, together with
the performances of possible applications (fuel cells, hydrogen
peroxide sensor, and scaffold for cell culturing), where CNW
electrode was used.
Speaker Biography
Mineo Hiramatsu is a full Professor of department of Electrical and Electronic
Engineering and the Director of Research Institute, Meijo University, Japan. His main
fields of research are plasma diagnostics and plasma processing for the synthesis of thin
films and nanostructured materials. He served as chairman and member of organizing
and scientific committees of international conferences on plasma chemistry and plasma
processing. He was awarded the Japan Society of Applied Physics Fellow in 2017.
e:
mnhrmt@meijo-u.ac.jp