Abstract
Na and K titanate nanotubes were prepared by hydrothermal method and characterized by BET, XRD, Raman, TEM and SEM-EDAX techniques. Low-temperature CO2 adsorption properties of the materials, along with their reusability and water tolerance, were established by generating the breakthrough curves and these properties were compared with those of the parent titania. The nanomaterials exhibited higher adsorption capacity than the parent titania. Their adsorption capacity increased in the presence of water and they also exhibited reproducibility of their breakthrough capacity. The Yoon–Nelson model used to calculate the rate constant for adsorption revealed higher values for the nanotubes than the parent titania.
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