University of Oulu

Mohammad KarzarJeddi, Ossi Laitinen, Mehrdad Mahkam, Henrikki Liimatainen, Zwitterionic hybrid aerobeads of binary metal organic frameworks and cellulose nanofibers for removal anionic pollutants, Materials & Design, Volume 196, 2020, 109106, ISSN 0264-1275,

Zwitterionic hybrid aerobeads of binary metal organic frameworks and cellulose nanofibers for removal anionic pollutants

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Author: KarzarJeddi, Mohammad1,2; Laitinen, Ossi1; Mahkam, Mehrdad2;
Organizations: 1Fibre and Particle Engineering Research Unit, Faculty of Technology, University of Oulu, P.O. Box 4300, FI-90014, Finland
2Department of Chemistry, Faculty of Science, Azerbaijan Shahid Madani University, P.O. Box 53714-161, Tabriz, Iran
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.7 MB)
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Language: English
Published: Elsevier, 2020
Publish Date: 2020-11-04


Different adsorbents have been applied to remove various anionic pollutants in water treatment processes. However, the development of economic, sustainable, and high-performance adsorbents is still a challenge. Herein, we introduce a new strategy to produce highly porous (98.96%), very low density (0.015 g/cm³), and cost-effective spherical and nanostructured hybrid aerogels, termed aerobeads, from cellulose nanofibers (CNF) and metal-organic frameworks (MOFs). The zwitterionic MOFs@CNF aerobeads (with 10–50 wt% MOF loading) were synthesized via simple dropping of a cross-linked hydrogel containing CNF and a binary mixture of anionic and cationic MOFs in liquid nitrogen, followed by freeze-drying. The flexible aerobeads (diameter of 2–3 mm) with hierarchical porous structure demonstrated an outstanding adsorption capacity toward both diclofenac (121.20 mg/g) and methyl orange (49.21 mg/g). Moreover, the aerobeads were easily collected after use from the solution without any complicated separation methods or the formation of secondary pollutants.

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Series: Materials & design
ISSN: 0264-1275
ISSN-E: 1873-4197
ISSN-L: 0264-1275
Volume: 196
Article number: 109106
DOI: 10.1016/j.matdes.2020.109106
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
Funding: This research was supported by grants from the Academy of Finland projects “Bionanochemicals” (No. 298295) and “ACNF—Functional nanoribbons from asymmetrically modified cellulose nanomaterials” (No. 325276).
Academy of Finland Grant Number: 298295
Detailed Information: 298295 (Academy of Finland Funding decision)
325276 (Academy of Finland Funding decision)
Copyright information: © 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (