Flexible nanocellulose-based aerogel with loading of modified UiO-66 as efficient adsorbent for removal of heavy metal ions

  1. Jiajia Li,
  2. Sicong Tan,
  3. Nannan Rong,
  4. Kunjie Zhang,
  5. Mengting Xu and
  6. Zhaoyang XuORCID Logo

Submitting author affiliation: Nanjing Forestry University, Nanjing, China

Beilstein Arch. 2019, 2019107. doi:10.3762/bxiv.2019.107.v1

Published 17 Sep 2019

  • Preprint

Abstract

Currently, preparation of outstanding adsorbents has attracted public concern in environmentally friendly and sustainable pollutant redress. Herein, we report a directional freeze-drying method to prepare a flexible and reusable adsorbent through introducing modified metal-organic framework material (UiO-66-EDTA) into cellulose nanofibers (CNF) aerogel. By controlling the concentration of crosslinkable carboxymethy cellulose (CMC) solution, we produced aerogels with different pore structures, fibrillar, columnar and lamellar morphology. The obtained UiO-66-EDTA/CNF/CMC aerogel (U-EDTACCA) showed excellent adsorption performance for total 9 types of heavy metal ions with the removal efficiency reaching 91%. Moreover, the aerogels could retain 88% of its original shape after 5 times cycling. The aerogel may be appropriate material for adsorbing heavy metal ions.

Keywords: nanocellulose aerogel, metal-organic framework, heavy metal ions, adsorption, directional freeze-drying

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When a peer-reviewed version of this preprint is available in the Beilstein Journals, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Li, J.; Tan, S.; Rong, N.; Zhang, K.; Xu, M.; Xu, Z. Beilstein Arch. 2019, 2019107. doi:10.3762/bxiv.2019.107.v1

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