Adsorption behavior of thorium on N,N,N′,N′-tetraoctyldiglycolamide (TODGA) impregnated graphene aerogel

Publication date: 1 May 2018
Source:Talanta, Volume 181
Author(s): Mumei Chen, Zheng Li, Yiyun Geng, Haogui Zhao, Shuhua He, Qingnuan Li, Lan Zhang
As a kind of three-dimensional graphene architecture material with superhydrophobic, low density, high specific surface area and porosity, graphene aerogel (GA) can be used to immobilize extractant to constitute the solvent impregnated adsorbent. In this paper, the N,N,N′,N′-tetraoctyldiglycolamide impregnated graphene aerogel ( GA-TODGA) was prepared to remove the thorium from aqueous solution. It is found that the adsorption of thorium on GA-TODGA is strongly dependent on the concentration of TODGA in GA and HNO3 in aqueous solution. Compared with other solvent impregnated adsorbents, the adsorption capacity of GA-TODGA is much higher due to the high immobilization capacity of GA for TODGA. Furthermore, the GA-TODGA also possesses excellent stability and reusability, ensuring the application potential of using GA-TODGA in large scale.

Graphical abstract

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