Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 132, Issue -, Pages 51-62Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2019.03.104
Keywords
ZnO/cellulose nanocrystal hybrids; Morphological modulation; Cationic dye absorption
Funding
- Key Program for International S&T Innovation Cooperation Projects of China [2016YFE0131400]
- Integrated Project of Green Manufacturing and Recycling System for Waste Textiles, Ministry of Industry and Information Technology of the People's Republic of China
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [LK1713]
- Zhejiang Province Welfare Technology Applied Research Project [LGC19E030002]
- Candidates of Young and Middle Aged Academic Leader of Zhejiang Province
- 521 Talent Project of Zhejiang Sci-Tech University
- Young Elite Scientists Sponsorship Program by CAST
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Zinc oxide/cellulose nanocrystal (ZnO/CNC) hybrids with modulated morphologies were prepared by using bamboo CNC as templates via green one-step technique. The effect of pH values on the morphology, microstructure, thermal stability, antibacterial efficiency and dye absorption kinetics of hybrids were investigated. A possible mechanism for various hybrid morphologies at different pH values was provided. All the samples exhibited high antibacterial ratios of 91.4%-99.8% against both Escherichia colt and Staphylococcus aureus. ZnO/CNC8.5 gave quick removal efficiency with high dye removal ratios in methylene blue (MB, 93.55%) and malachite green (MG, 99.02%), especially >91.47% and 97.85% within 5 min. The absorption capacity could reach up to 46.77 mg/g for MB and 49.51 mg/g for MG. Besides, absorption kinetics showed that the absorption behavior followed the pseudo-second-order kinetic model (R-2 > 0.99996). Such ZnO/CNC hybrids show outstanding and low-cost adsorbent for efficient absorption of cationic dyes in wastewater treatment field. (C) 2019 Elsevier B.V. All rights reserved.
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