The objective of this study was to fabricate 1-dimensional (1-D) nanocomposite materials with high aspect ratios and specific surface areas for the coupled degradation of refractory organic compounds and heavy metals. The 1-D nanomaterials were composed of various ratios of carbon nanotubes (CNT) and titanate nanotubes (TNT) (CNT/TNT). Alkaline hydrothermal method was used to fabricate TNT under various hydrothermal conditions. The morphology changed from nanoparticles/nanosheets, nanotubes, nanowires and then to nanoribbon as the hydrothermal temperatures increased from 60 to 230°C. In addition, the CNT/TNT nanomaterials have a good capability toward heavy metal adsorption. The Langmuirian maximum adsorption capacities of nanomaterials were in the range 83–124 mg/g for Cu2 + and 192–588 mg/g for Pb2 + , which is superior to that of CNT. The removal efficiency of Cu2 + by CNT/TNT decreased when 40 mg/L MX5B was due to the complexation of MX5B with Cu2 + . Results obtained in this study clearly show the 1-D CNT/TNT nanomaterials are a promising nano-adsorbent for coupled removal of organic as well as heavy metal ions in solution.
Research Article|November 01 2008
Coupled removal of organic compounds and heavy metals by titanate/carbon nanotube composites
Water Sci Technol (2008) 58 (10): 1985-1992.
Ruey-An Doong, Li-Fen Chiang; Coupled removal of organic compounds and heavy metals by titanate/carbon nanotube composites. Water Sci Technol 1 November 2008; 58 (10): 1985–1992. doi: https://doi.org/10.2166/wst.2008.553
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