Preparation and theoretical study of functionalized single-wall carbon nanotubes used for water treatment

Wu Qin; Xin Li; Yun-Fang Yuan; Jing-Yao Qi; Liang-sheng Qiang

doi:10.1117/12.780088

1 November 2007 Preparation and theoretical study of functionalized single-wall carbon nanotubes used for water treatment

Wu Qin, Xin Li, Yun-Fang Yuan, Jing-Yao Qi, Liang-sheng Qiang

Author Affiliations +

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64234X (2007) https://doi.org/10.1117/12.780088
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

Single-wall carbon nanotubes (SWCNTs) were modified by chemical method and were employed as adsorbents to study adsorption of Cu²⁺ from water. The experiments demonstrated that the short time needed to reach equilibrium as well as the high adsorption capacity of Cu²⁺. The electronic and structural properties of Cu²⁺-SWNTs system was investigated by using density functional theory calculations, and the binding energies and the charge transfers between the Cu²⁺ and the tube are calculated and compared. It is found that that the Cu²⁺ attracted to the CNT surface in an effective physisorption way, which is important for wiping off the heavy metal ions in the water. It is suggesting that both SWCNTs and functionalized SWCNTs are efficient heavy metals sorbents and that they possess good potential applications in water treatment.

Citation Download Citation

Wu Qin, Xin Li, Yun-Fang Yuan, Jing-Yao Qi, and Liang-sheng Qiang "Preparation and theoretical study of functionalized single-wall carbon nanotubes used for water treatment", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64234X (1 November 2007); https://doi.org/10.1117/12.780088

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