CNTs, as both single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs), are unique macromolecules that have a one-dimensional structure, thermal stability and exceptional chemical properties. These nanomaterials have shown to have good potential as superior adsorbents to remove various types of organic and inorganic pollutants, both in air streams and in an aqueous environment. The adsorption capacity of pollutants by CNTs is mainly caused by the pore structure and the existence of a broad spectrum of surface functional groups of CNTs that can be achieved by modifying the chemical or thermal treatment to tune the CNTs to have optimal performance for a particular purpose.
Their unique electronic properties and structures have attracted the interest of researchers in enhancing the potential applications of SWNTs and MWNTs. For example, SWNTs have been reported to be a chemical sensor for NO2 and NH3. After being exposed to NO2 or NH3 gas, the electrical resistance of SWNTs was found to change significantly, either up or down. SWNTs and MWNTs can also be used as hydrogen storage. In addition, CNTs have been used as quantum nanowires, electron field emitters, catalyst supports, etc.
CNTs, as both single-walled nanotubes (SWNTs) and multi-walled nanotubes (MWNTs), are unique macromolecules that have a one-dimensional structure, thermal stability and exceptional chemical properties. These nanomaterials have shown to have good potential as superior adsorbents to remove various types of organic and inorganic pollutants, both in air streams and in an aqueous environment. The adsorption capacity of pollutants by CNTs is mainly caused by the pore structure and the existence of a broad spectrum of surface functional groups of CNTs that can be achieved by modifying the chemical or thermal treatment to tune the CNTs to have optimal performance for a particular purpose.Their unique electronic properties and structures have attracted the interest of researchers in enhancing the potential applications of SWNTs and MWNTs. For example, SWNTs have been reported to be a chemical sensor for NO2 and NH3. After being exposed to NO2 or NH3 gas, the electrical resistance of SWNTs was found to change significantly, either up or down. SWNTs and MWNTs can also be used as hydrogen storage. In addition, CNTs have been used as quantum nanowires, electron field emitters, catalyst supports, etc.
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