Cross-Linked Carbon Nanotube Adsorbents for Water Treatment: Tuning the Sorption Capacity through Chemical Functionalization

Myriam Barrejón, Zois Syrgiannis, Max Burian, Susanna Bosi, Tiziano Montini, Paolo Fornasiero, Heinz Amenitsch, Maurizio Prato

Research output: Contribution to journalArticleResearchpeer-review

Abstract

The development of carbon-based membrane adsorbent materials for water treatment has become a hot topic in recent years. Among them, carbon nanotubes (CNTs) are promising materials because of its large surface area, high aspect ratio, great chemical reactivity, and low cost. In this work, free-standing CNT adsorbents are fabricated from chemically cross-linked single-walled CNTs. We have demonstrated that by controlling the degree of cross-linking, the nanostructure, porous features, and specific surface area of the resulting materials can be tuned, in turn allowing the control of the adsorption capacities and the improvement of the adsorption performance. The cross-linked CNT adsorbents exhibit a notably selective sorption ability and good recyclability for removal of organics and oils from contaminated water.

Original languageEnglish
Pages (from-to)12920-12930
Number of pages11
JournalACS Applied Materials and Interfaces
Volume11
Issue number13
DOIs
Publication statusPublished - 3 Apr 2019

Keywords

  • adsorption capacity
  • carbon nanotube-based adsorbents
  • cross-linking
  • organic pollutants
  • water treatment

ASJC Scopus subject areas

  • Materials Science(all)

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