Potential of Carbon Nanotubes in Enhance of Photocatalyst Activity
Journal Title: Archives of Nanomedicine: Open Access Journal - Year 2018, Vol 1, Issue 3
Abstract
Carbon nanotubes (CNTs) have generated huge activity in most areas of science and engineering due to their remarkable physical and chemical properties. No previous materials have displayed the combination of superlative mechanical, thermal and electronic properties attributed to them. These properties make nanotubes ideal, not only for a wide range of applications but as a test bed for fundamental science. This review highlighted some of the properties of these nanotubes and also their role as supports materials in enhance of photocatalytic activity of nanocrystals for removal of contaminants. Elemental carbon in the sp2 hybridization can form a variety of amazing structures. Apart from the well-known graphite, carbon can build closed and open cages with honeycomb atomic arrangement. First such structure to be discovered was the C60 molecule by Kroto [1]. Although various carbon cages were studied, it was only in 1991, when Iijima [2] observed for the first time tubular carbon structures. The nanotubes consisted of up to several tens of graphitic shells (so-called multi-walled carbon nanotubes (MWNTs)) with adjacent shell separation of ~0.34nm, diameters of ~1nm and large length/diameter ratio. Two years later, Iijima and Ichihashi [3] and Bethune et al. [4] synthesized single-walled carbon nanotubes (SWNTs). Nowadays, MWNTs and SWNTs are produced mainly by three techniques: arc-discharge, laser-ablation, and catalytic growth [5] Figure 1 shows these two categories of CNTs) (Figure 1).
Authors and Affiliations
Atheel Alwash, Hadeel Adil, Zainab Hussain, Emad Yousif
Keywords
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- EP ID EP583427
- DOI 10.32474/ANOAJ.2018.01.000115
- Views 93
- Downloads 0
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