Amide functionalization of multiwalled carbon nanotubes and their evaluation for Hg(II) removal from water
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Published version
Embargoed until: 5555-01-01
Embargoed until: 5555-01-01
Volume
10
Pagination
205 - 208
Publisher
DOI
10.1142/S0219581X11007776
Issue
ISSN
1793-5350
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This paper deals with the amide functionalization of multiwalled carbon nanotubes (MWNTs) and its evaluation for mercury removal from water. The functionalized MWNTs were characterized using FTIR for structural modification. The properties of MWNTs such as hydrophilic character, nature of surface, selective chemical interaction with mercury, etc., were significantly improved after functionalization making them promising adsorbents for mercury removal. The equilibrium is achieved in short time of 5 h resulting in up to 80% removal of Hg(II). Kinetics of adsorption was established and found to follow first-order reversible kinetics with forward and backward reaction rate constants 0.6648 and 0.1662, respectively. © 2011 World Scientific Publishing Company.