1. Reduction of Silver Ions Using an Alkaline Cellulose Dope: Straightforward Access to Ag/ZnO Decorated Cellulose Nanocomposite Film with Enhanced Antibacterial Activities
- Author
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Jinping Zhou, Gu Jiayuan, Jinfeng Cao, Hanxiang Liu, Feiya Fu, Xiangdong Liu, Shen Rongsheng, and Yanyan Zhang
- Subjects
Aqueous solution ,Nanocomposite ,Materials science ,Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,Doping ,Inorganic chemistry ,technology, industry, and agriculture ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Ion ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Urea ,Environmental Chemistry ,Cellulose ,0210 nano-technology ,Antibacterial activity ,Zincate - Abstract
This work proposed a straightforward and sustainable strategy to synthesize Ag/ZnO decorated cellulose nanocomposite. Firstly, zincate was introduced into an aqueous cellulose-NaOH/urea dope to enhance the solution stability. Secondly, AgNO3 was directly added into the cellulose dope without gelation, and then was reduced into Ag NPs by cellulose chain. Finally, zincate transformed into ZnO via biomimetic mineralization along with the regeneration of the cellulose dope, and an Ag/ZnO decorated cellulose nanocomposite film was synthesized. The Ag NPs with a mean diameter of 16.5 nm were well dispersed in the cellulose matrix, and some were doped on the surface of the embedded ZnO crystal. With increase of the Ag loading, the nanocomposite film showed more rapid sterilization for E. coli than S. aureus, and complete eradication could be achieved within 3 h for both bacteria. This simple and environmental friendly method hopefully provided new routes for large-scale production of antibacterial cellulose-base...
- Published
- 2017