Carbon Nanotubes (CNTS) that has been decorated with nanoparticles are effective biological and scalp sensors, photovoltaics, electronic thermal compliance interface substances, and surfaces for heterogeneous catalysis. The Particle Structure of the Sidewalls of the CNT has an effect on the performance and properies of Metal-Nanotube Hybrids for these types of Applications.
Methods for nanoparticle Decoration of Carbon Nanotubes
nanoparticles are often Deposited Electrochemically, which generally require treatings that are time-consuming and contain strong acid for surface detection production. This acid can compromise the intrinsic mechanical or transport owls of the cnts, restricting their multi-functionality. Alternative Techniques to Electrochemical Treatment, Such As Vapor Deposition, Are Undertaken to Facilitate The Growth of Metal Nanoparticles In Situ On The Multi-Wall Carbon Nanotube (MWCNT) Sidewalls.
SPUTTERING PROCESS
This article discuss the analysis of the vapor phase Growth of Nickel, Titanium, and Gold Nanoparticles on Bulky Paper Mwcnts. The inherent Binding Energy of Elemental Metals Strongly Influences The Nanoparticle Size and Distribution, for Example; The Use of Metals With Large Cohesive Energies Would Result in the Growth of Nanoparticles with a smaller Diameter and Higher Density.
The Use of Energetic Metal Ions, Characterized As Illustrated in Figure 1, for in situ Modification of the MWCNT Surface During Their Growth Could Alter Any Metal Nanoparticle Diameter to Mimic That of Metals with Different Binding Energies. The Carbon Atom Removal from the Surface of A Mwcnt Uses The Kinetic Energy of Incident Ions> 5-7 EV. The Use of the Spluting Process to Control the Ariel Density, Morphology, Diameter of Metal Nanoparticles Deposited on the Sidewalls of As-Received and Anneled Mwcnts for Nickel, Titanium and Gold Was Demonstrated.
Based on the defect density of the Surfacces of Mwcnts and the Parameters of Intrinsic Sputtering Process (Kinetic Energy and Metal Ion Fluxular in Particular), it is possible to produce gold nanoparticles with an average diameter rage of 5 - 30 nm. It is also possible to control the defect density of the mwcnt surfaces by annealing before the spiter process. The characteristics of the nanoparticles can be modified with the total incident ion flow and temperature daring processing, or with the initial diameters of the carbon nanotubes. The mwcnt diameter significantly influences the geometry of the nanoparticles.
Particle Elongation Along the Axis of the Nanotube was achieved for diameters of tube <30 nm. Nanoparticles with a string alignment Along the axis of the nanotube we observed, especially for those mwcnts with greater defect densities. Scaling up the PVD Process, Employed for Nanoparticle Growth for Large Arrays of Cnts, is possible. The pvd process will be studied to add multi-functionality properies to the nanocomposites, based on cnts.