New Carbon Nano Tubes (CNT) Developed

New Carbon Nano Tubes (CNT) Developed

Science Coaching India finds from news pertain to solid chemistry in reference to Journal Science that Scientists have developed carbon nanotubes (CNT) over 50,000 times thinner than a human hair. These CNT can separate salt from seawater and may help solve the global water crisis. Increasing demands for fresh water pose a global threat to sustainable development, resulting in water scarcity for four billion people, researchers said. Current water purification technologies can benefit from the development of membranes with specialised pores that mimic highly efficient and water selective biological proteins. The nanotubes, hollow structures made of carbon atoms in a unique arrangement and are more than 50,000 times thinner than a human hair. The super smooth inner surface of the nanotube is responsible for their remarkably high water permeability, while the tiny pore size blocks larger salt ions. The narrow hydrophobic channel forces water to trans locate in a single-file arrangement, a phenomenon similar to that found in the most efficient biological water transporters. Computer simulations and experimental studies of water transport through CNTs with diameters larger than one nanometre showed enhanced water flow, but did not match the transport efficiency of biological proteins and did not separate salt efficiently, especially at higher salinities.

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