Carbon Nanotube (CNT) Sponges

Carbon Nanotube (CNT) Sponges

Carbon nanotubes (CNTs) are nanoscale, strong and hollow cylinders which shows excellent mechanical and electrical properties. Based on their orientation and configuration in the structure, they can be used in many practical applications such as supercapacitors, catalytic electrodes, flexible heaters, superhydrophobic coatings, biomimetic surfaces, artificial muscles, and integrated microelectromechanical systems. These different forms of CNTs can be vertically aligned arrays via direct growth, long fibers or sheets yarned from CNT forests, solids and wafers densified from aligned films, solution-processed aerogels and thin films. All of these forms of CNTs show different properties since their alignments, densities and porosities are different. CNTs can be considered as superior sorbents for a wide range of organic chemicals and inorganic contaminants than conventional systems such as clay and activated carbon, with a number of advantages including stronger chemical-nanotube interactions, rapid equilibrium rates, high sorbent capacity and tailored surface chemistry.