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- Publisher
- Springer Journals
- Copyright
- Copyright © 2017 by Springer Science+Business Media, LLC
- Subject
- Engineering; Circuits and Systems; Biological and Medical Physics, Biophysics; Nanotechnology; Biomaterials
- ISSN
- 2191-1630
- eISSN
- 2191-1649
- DOI
- 10.1007/s12668-017-0442-y
- Publisher site
- See Article on Publisher Site
Abstract
Carbon-based nanomaterials with functionalized surface are widely used in water treatment, agriculture, hydrogen storage, and biology. The current study deals with characterization of engineered multi-wall carbon nanotubes (MWCNT) prior and after chemical modification in nitric acid for 1 and 2 h. It was shown that MWCNT surface area increased from 70 m2/g (pristine material) to 149 m2/g after 2 h modification, and the surface became hydrophilic. According to back-titration method the functional surface group concentration increased almost three times after 2 h treatment compared to 1 h modification. The results of thermogravimetric analysis (TGA) have shown good correspondence with functional COOH-group concentration of samples. Total pore volume and specific surface area were calculated using non-local density functional theory (NLDFT) and Brunaeur-Emmet-Teller (BET) models. Studied functionalized MWCNTs form stable water dispersions and show great potential for biological agricultural applications.
Journal
BioNanoScience – Springer Journals
Published: Aug 10, 2017