TY - JOUR
T1 - Ultralight and porous cellulose nanofibers/polyethyleneimine composite aerogels with exceptional performance for selective anionic dye adsorption
AU - Zhang, Weihua
AU - Wang, Luyao
AU - Mäkilä, Ermei
AU - Willför, Stefan
AU - Xu, Chunlin
N1 - Funding Information:
Zhang W. and Wang L. would like to acknowledge financial support from the China Scholarship Council (Student ID 201706330109 for Zhang W. and Student ID 201804910639 for Wang L. respectively). This work is also part of the activities within the Johan Gadolin Process Chemistry Centre at ?bo Akademi University.
Funding Information:
Zhang W. and Wang L. would like to acknowledge financial support from the China Scholarship Council (Student ID 201706330109 for Zhang W. and Student ID 201804910639 for Wang L. respectively). This work is also part of the activities within the Johan Gadolin Process Chemistry Centre at Åbo Akademi University.
Publisher Copyright:
© 2022 The Authors
PY - 2022/3
Y1 - 2022/3
N2 - It is significant to develop new adsorbents with excellent adsorption performance and convenient operation ability for removing pollutants from wastewater owing to the growing environmental problems. In this paper, a novel ultralight aerogel-based adsorbent with highly porous structure and good mechanical integrity was fabricated based on the interaction of amine groups on polyethyleneimine (PEI) and hydroxyl groups on cellulose nanofibers (CNF), with epichlorohydrin (ECH) serving as a crosslinker. The obtained CNF/PEI aerogel showed excellent water stability in harsh conditions, fast water-activated shape recovery, and ultra-fast water transport. The adsorption capacity for methyl orange (MO) in batch can reach to1226 mg g−1 at pH 6. Furthermore, the membrane also exhibited excellent selective adsorption and filtration, and separation performance. Therefore, this paper presents a new strategy to prepare low-cost and highly efficient adsorbents to remove organic dyes from wastewater for potential practical applications.
AB - It is significant to develop new adsorbents with excellent adsorption performance and convenient operation ability for removing pollutants from wastewater owing to the growing environmental problems. In this paper, a novel ultralight aerogel-based adsorbent with highly porous structure and good mechanical integrity was fabricated based on the interaction of amine groups on polyethyleneimine (PEI) and hydroxyl groups on cellulose nanofibers (CNF), with epichlorohydrin (ECH) serving as a crosslinker. The obtained CNF/PEI aerogel showed excellent water stability in harsh conditions, fast water-activated shape recovery, and ultra-fast water transport. The adsorption capacity for methyl orange (MO) in batch can reach to1226 mg g−1 at pH 6. Furthermore, the membrane also exhibited excellent selective adsorption and filtration, and separation performance. Therefore, this paper presents a new strategy to prepare low-cost and highly efficient adsorbents to remove organic dyes from wastewater for potential practical applications.
KW - Aerogel
KW - Cellulose nanofibers
KW - Filtration
KW - Polyethyleneimine
KW - Selective adsorption
KW - Water treatment
UR - http://www.scopus.com/inward/record.url?scp=85122633635&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2021.114513
DO - 10.1016/j.indcrop.2021.114513
M3 - Article
AN - SCOPUS:85122633635
SN - 0926-6690
VL - 177
JO - Industrial Crops and Products
JF - Industrial Crops and Products
M1 - 114513
ER -