Carbon Nanowalls

Representing the first text to cover this exciting new area of research, this book will describe synthesis techniques of CNWs, their characterization and various expected applications using CNWs. Carbon-nanowalls (CNWs) can be described as two-dimensional graphite nanostructures with edges comprised of stacks of plane graphene sheets standing almost vertically on the substrate. These sheets form a wall structure with a high aspect ratio. The thickness of CNWs ranges from a few nm to a few tens of nm. The large surface area and sharp edges of CNWs may prove useful for a number of applications such as electrochemical devices, field electron emitters, storage materials for hydrogen gas, catalyst support. In particular, vertically standing CNWs with a high surface-to-volume ratio, serve as an ideal material for catalyst support for fuel cells and in gas storage materials.

This is the first book ever to cover Carbon Nanowalls (CNWs). It describes synthesis techniques of CNWs, their characterization, and various expected applications using them.

Representing the first text to cover this exciting new area of research, this book will describe synthesis techniques of CNWs, their characterization and various expected applications using CNWs. Carbon-nanowalls (CNWs) can be described as two-dimensional graphite nanostructures with edges comprised of stacks of plane graphene sheets standing almost vertically on the substrate. These sheets form a wall structure with a high aspect ratio. The thickness of CNWs ranges from a few nm to a few tens of nm. The large surface area and sharp edges of CNWs may prove useful for a number of applications such as electrochemical devices, field electron emitters, storage materials for hydrogen gas, catalyst support. In particular, vertically standing CNWs with a high surface-to-volume ratio, serve as an ideal material for catalyst support for fuel cells and in gas storage materials.

Introduction: Discovery of two-dimensional carbon nanostructures;Characteristics of carbon nanowalls;Research on carbon nanowalls.- Preparation methods and growth mechanism:Microwave plasma enhanced chemical vapor deposition;Capacitively coupled plasma enhanced chemical vapor deposition with radical injection;Inductively coupled plasma enhanced chemical vapor deposition;Electron-beam-excited plasma enhanced chemical vapor deposition;Hot filament chemical vapor deposition;Atmospheric pressure plasma enhanced chemical vapor deposition;Sputtering;Discussion.- Physics of carbon nanowalls:Characterization of carbon nanowalls;SEM and TEM observation;Raman spectra of carbon nanowalls;Morphology control;Mechanical properties of carbon nanowalls;Field emission;Discussion.- Highly reliable growth process of carbon nanowalls using radical injection plasma-enhanced chemical vapor deposition:The idea of radical injection chemical vapor deposition;Radical density measurement in the plasma;Correlation between growth process and chamber wall conditions;Electrical conduction control of carbon nanowalls.- Applications:Carbon nanowall field emitters;Surface modification of carbon nanowalls;Electrochemical application of carbon nanowalls;Catalyst support for fuel cell application;Bio application of carbon nanowalls;Nanoimprint application.- Future directions.