Thioether-Functionalized Covalent Triazine Nanospheres: A Robust Adsorbent for Mercury Removal

Hg/Hg­(II) have been recognized as being highly poisonous to humans as they cause severe health and environmental problems. Designing a suitable adsorbent decorated with an abundance of accessible chelating sites at the solid surface together with high affinity for heavy metals is a big challenge to...

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Published inACS sustainable chemistry & engineering Vol. 7; no. 7; pp. 7353 - 7361
Main Authors Mondal, Sujan, Chatterjee, Sauvik, Mondal, Saptarsi, Bhaumik, Asim
Format Journal Article
LanguageEnglish
Published American Chemical Society 01.04.2019
Subjects
Recyclable adsorbent
Mercury removal
Microporous materials
Covalent triazine networks
Thioether functionalized material
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Summary:Hg/Hg­(II) have been recognized as being highly poisonous to humans as they cause severe health and environmental problems. Designing a suitable adsorbent decorated with an abundance of accessible chelating sites at the solid surface together with high affinity for heavy metals is a big challenge to overcoming mercury contamination. Here we report a new thioether-functionalized covalent triazine nanosphere, SCTN-1, which has been employed as a highly efficient adsorbent for the removal of toxic mercury from contaminated water with an excellent adsorption performance of 1253 and 813 mg g–1 for Hg2+ and Hg(0) respectively, which largely outperforms several recently reported thiol and thioether-functionalized adsorbents. Our kinetic studies suggest that SCTN-1 showed the fastest adsorption rate for the removal of mercury from aqueous solutions among all adsorbents known until date. Based on its adsorption performance and high recycling efficiency, this thio-functionalized nanoporous polymeric material has huge potential to be explored in environmental remediation.
ISSN:2168-0485
2168-0485
DOI:10.1021/acssuschemeng.9b00567