ZHENG Jing-zhi1. Modification of carbon nanotubes with sodium p-aminobenzenesulfonate and its effect on Cu2+ adsorption. New Carbon Mater., 2013, 28(1): 14-19.
Citation:
ZHENG Jing-zhi1. Modification of carbon nanotubes with sodium p-aminobenzenesulfonate and its effect on Cu2+ adsorption. New Carbon Mater., 2013, 28(1): 14-19.
ZHENG Jing-zhi1. Modification of carbon nanotubes with sodium p-aminobenzenesulfonate and its effect on Cu2+ adsorption. New Carbon Mater., 2013, 28(1): 14-19.
Citation:
ZHENG Jing-zhi1. Modification of carbon nanotubes with sodium p-aminobenzenesulfonate and its effect on Cu2+ adsorption. New Carbon Mater., 2013, 28(1): 14-19.
Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430074, China|2.School of Materials Science and Technology, Wuhan Institute of Technology, Wuhan 430074, China
Funds:
The Education Department of Hubei province key research project（D20121504）; Research Fund of Wuhan Institute of Technology (10115033); Opening Foundation of Key Laboratory for Green Chemical Process of Ministry of Education (RGCT200904).
Multiwalled carbon nanotubes (MWCNTs) were oxidized by concentrate HNO3 and then reacted with SOCl2 to form MWCNT-COCl. Water-soluble sodium p-aminobenzenesulfonate-grafted multiwalled carbon nanotubes (MWCNT-CO-NHC6H5SO3Na) were synthesized by an amidation reaction of sodium p-aminobenzenesulfonate with MWCNT-COCl, which was verified by FT-IR spectroscopy. The content of the sodium p-aminobenzenesulfonate grafted onto the MWCNT surface reached 29.9 mass%. The MWCNT-CO-NHC6H5SO3Na showed a good solubility and dispersion in water, and had an improved adsorptive performance for the removal of low concentrations of Cu2+ in water. The adsorption isotherms of the MWCNT-CO-NHC6H5SO3Na for Cu2+ can be well fitted by the Freundlich equation.
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