Green one-step synthesis of ZnO/cellulose nanocrystal hybrids with modulated morphologies and superfast absorption of cationic dyes
Language English Country Netherlands Media print-electronic
Document type Journal Article
PubMed
30922915
DOI
10.1016/j.ijbiomac.2019.03.104
PII: S0141-8130(18)37287-8
Knihovny.cz E-resources
- Keywords
- Cationic dye absorption, Morphological modulation, ZnO/cellulose nanocrystal hybrids,
- MeSH
- Anti-Bacterial Agents chemistry pharmacology MeSH
- Coloring Agents chemistry isolation & purification MeSH
- Cellulose chemistry MeSH
- Water Purification MeSH
- Escherichia coli drug effects MeSH
- Absorption, Physicochemical * MeSH
- Kinetics MeSH
- Hydrogen-Ion Concentration MeSH
- Methylene Blue chemistry isolation & purification MeSH
- Nanoparticles chemistry MeSH
- Wastewater chemistry MeSH
- Zinc Oxide chemistry pharmacology MeSH
- Rosaniline Dyes chemistry isolation & purification MeSH
- Staphylococcus aureus drug effects MeSH
- Chemistry Techniques, Synthetic MeSH
- Green Chemistry Technology MeSH
- Temperature MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- Anti-Bacterial Agents MeSH
- Coloring Agents MeSH
- Cellulose MeSH
- malachite green MeSH Browser
- Methylene Blue MeSH
- Waste Water MeSH
- Zinc Oxide MeSH
- Rosaniline Dyes MeSH
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 coli 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 (R2 > 0.99996). Such ZnO/CNC hybrids show outstanding and low-cost adsorbent for efficient absorption of cationic dyes in wastewater treatment field.
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