IRMA-International.org: Creator of Knowledge
Information Resources Management Association
Advancing the Concepts & Practices of Information Resources Management in Modern Organizations

Transformation of Nanomaterials in Environment: Surface Activation of SWCNTs during Disinfection of Water with Chlorine

Transformation of Nanomaterials in Environment: Surface Activation of SWCNTs during Disinfection of Water with Chlorine
View Sample PDF
Author(s): Corneliu Bogatu (Institute of Industrial Ecology, Timisoara, Romania)and Danuta Leszczynska (Department of Civil and Environmental Engineering, Interdisciplinary Center of Nanotoxicity, Jackson State University, Jackson, MS, USA)
Copyright: 2016
Volume: 1
Issue: 1
Pages: 13
Source title: Journal of Nanotoxicology and Nanomedicine (JNN)
Editor(s)-in-Chief: Bakhtiyor Rasulev (North Dakota State University, USA)
DOI: 10.4018/JNN.2016010104

Purchase


Abstract

Carbon nanotubes are new class of active environmental pollutants. The authors report interactions between chlorine used as disinfectant/oxidant during typical water treatment and single-wall carbon nanotubes (SWCNTs). Alterations in SWCNT morphology were determined by TEM, while FT-IR spectra helped to determine chemical changes before, during and after chlorination. The analysis of original FT-IR spectra, and their second order derivatives revealed the formation of new, oxygen-bearing groups, namely quinones, ethers, and additional carboxyl groups on the surface of SWCNTs. The two-step reaction mechanism: (1) initial adsorption of mixture of hypochlorous acid and hypochlorite anions on the surface of carbon nanotubes, and (2) oxidation of surface and formation of new functional groups, was suggested. It was found that standard disinfection has activated previously inert carbon nanotubes and turn them into active species able to participate in further cross-contamination reactions. Interestingly, the oxygen-bearing groups were formed as a product of reaction with chlorine.

Related Content

Anju Gupta, Poornima Kalyanram, Istvan Stadler. © 2018. 11 pages.
Sabna Kotta, Navneet Sharma, Prateek Raturi, Mohd Aleem, Rakesh Kumar Sharma. © 2018. 22 pages.
Rahul B Chavan, Nalini R Shastri. © 2018. 26 pages.
Natalia Sizochenko, Jerzy Leszczynski. © 2017. 10 pages.
James Jorum Owuor, Florence Oloo, Martin Ongas, Caroline Kirimi, Wesley Nyaigoti Omwoyo, Jeremiah Waweru Gathirwa. © 2017. 15 pages.
Karolina Jagiello, Anita Sosnowska, Alicja Mikolajczyk, Tomasz Puzyn. © 2017. 11 pages.
Lyudvig S. Petrosyan, Supratik Kar, Jerzy Leszczynski, Bakhtiyor Rasulev. © 2017. 16 pages.
Body Bottom