High Aspect Ratio Carboxylated Cellulose Nanofibers Cross-linked to Robust Aerogels for Superabsorption-Flocculants: Paving Way from Nanoscale to Macroscale

ACS Applied Materials & Interfaces
Duanchao WangQingqing Ni

Abstract

Charged nanocellulose (NC) with a high aspect ratio (larger than 100) extracted from animal or bacterial cellulose and chemical cross-linked NC aerogels have great promising applicability in material science, but facile fabrication of such NC aerogels from plant cellulose by physical cross-linking still remains a major challenge. In this work, carboxylated cellulose nanofiber (CNF) with the highest aspect ratio of 144 was extracted from wasted ginger fibers by a simple one-step acid hydrolysis. Our approach could easily make the carboxylated CNF assemble into robust bulk aerogels with tunable densities and desirable shapes on a large scale (3D macropores to mesopores) by hydrogen bonds. Excitingly, these CNF aerogels had better compression mechanical properties (99.5 kPa at 80% strain) and high shape recovery. Moreover, the CNF aerogels had strong coagulation-flocculation ability (87.1%), removal efficiency of MB dye uptake (127.73 mg/g), and moderate Cu2+ absorption capacity (45.053 mg/g), which were due to assistance mechanisms of charge neutralization, network capture effect, and chain bridging of high aspect ratio carboxylated CNF. This provided a novel physical cross-linking method to design robust aerogels with modulated ...Continue Reading

References

Dec 6, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Asako HiraiMasaki Tsuji
Mar 21, 2009·Science·Ali E AlievRay H Baughman
Oct 20, 2010·Nanoscale·Akira IsogaiHayaka Fukuzumi
May 21, 2011·Angewandte Chemie·Dieter KlemmAnnie Dorris
Jun 25, 2013·ACS Applied Materials & Interfaces·Alireza JavadiShaoqin Gong
Aug 31, 2013·Carbohydrate Polymers·Vinod Kumar GuptaDeepak Pathania
Oct 3, 2015·Carbohydrate Polymers·Bhawna SoniBarakat Mahmoud
Jan 14, 2016·ACS Applied Materials & Interfaces·Arie MulyadiYulin Deng
Sep 28, 2016·Nature Communications·Xiaobo HuSergei S Sheiko

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Citations

Jun 25, 2020·Advanced Materials·Jifu WangFuxiang Chu
May 6, 2019·Materials·Carla VilelaCarmen S R Freire
Aug 1, 2020·Frontiers in Chemistry·Luna LiangArthur J Ragauskas
Jan 27, 2019·Nanomaterials·Andreas MautnerAlexander Bismarck
Aug 8, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Paola FrancoIolanda De Marco
Aug 24, 2021·Carbohydrate Polymers·Aihua QiaoRongxin Su

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