Synthesis of Carbon Nanotube and Carbon Nanofiber in Nanopore of Anodic Aluminum Oxide Template by Chemical Vapor Deposition at Atmospheric Pressure

Abstract

Carbon nanotube (CNT) is one of the most attractive materials for the potential applications of nanotechnology due to its excellent mechanical, thermal, electrical and optical properties. We demonstrated the fabrication of carbon nanotube and carbon nanofiber (CNF) inside the pore and at the surface of anodic aluminum oxide (AAO) membrane by chemical vapor deposition method at atmospheric pressure. Ethanol was used as a hydrocarbon source and Co–Mo as catalyst. CNT was synthesized at different temperature. High graphitic multiwall carbon nanotube (MWCNT) was found at 750°C, while CNF was found at 800°C and above temperature analyzing by Raman spectroscopy.

Simple Mathematical Model of Conducting Nanopore

“…Fictitious charges are positioned at points (z n , a, θ m ) that are given in (8) and N = 50. The nanopore is set at an electric potential of 1 V .…”

“…For example, such nanopores can be manufactured by integrating carbon structures into a proper nanoporous material. Multi wall carbon nanotube can be fabricated inside the pore and at the surface of anodic aluminum oxide membrane by chemical vapor deposition method [8]. Aligned metallic single walled carbon nanotubes were grown on a silicon wafer by chemical vapour deposition [9].…”

Filling of carbon nanotubes and nanofibres

“…This technique has since been refined to produce tailored CNTs of desired length and diameter [ 65 ] and to allow the template to be dissolved in NaOH (rather than concentrated HF) [ 66 ]. This method has also been employed to produce SWCNTs [ 67 ] and VGCNFs [ 68 ], as well as long (10 µm) MWCNTs that can be nested or joined to create long MWCNTs [ 69 ].…”

Synthesis of Unique Structures of Carbon Nanotube at Anodic Aluminum Oxide Template

“…The advantage of this approach is the uniform tubular and adjustable pore size and length. The pore size and pore length in alumina can be adjusted from few nanometers to several hundred nanometers and few nanometers to several hundred micrometers, respectively [17]. In template-based CNT synthesis, CNTs are synthesized either using catalyst or without catalyst because alumina template itself could act as catalyst under certain condition [18][19][20][21][22][23][24][25].…”

“…In template-based CNT synthesis, CNTs are synthesized either using catalyst or without catalyst because alumina template itself could act as catalyst under certain condition [18][19][20][21][22][23][24][25]. Sui et al reported synthesis of multi-branched CNT, showing that that the shape of CNT was dependent on the pore geometry [26][27]. Here in this research we synthesized some new and unique carbon structures such as nanotubes, hooks, helicesand spiral.…”