期刊
CARBOHYDRATE POLYMERS
卷 95, 期 1, 页码 214-219出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2013.02.077
关键词
Cellulose nanocrystals; Silver nanostructure; Antibacterial activity; Shape control; Environmentally friendly synthesis
资金
- National Science Foundation of China [51203105]
- National High Technology Research and Development Program (863 Program) [SS2012AA062613]
In this study, we report a facile and environmentally friendly strategy for synthesis of well dispersed and stable silver nanostructures using cellulose nanocrystals in aqueous solution without employing any other reductants, capping or dispersing agents. Importantly, it is feasible to adjust the morphology of the silver nanostructures by varying the precursor AgNO3 concentration. Silver nanospheres were formed when the AgNO3 concentration was 0.4 mM, while the dendritic nanostructures predominated when the AgNO3 concentration was increased to 250 mM. The antibacterial activity of the two different silver nanostructures against Escherichia coli and Staphylococcus aureus was characterized. Dendritic nanostructure showed a better antibacterial activity than that of silver nanosphere. The approach presented in this paper offers a very promising route to noble metal nanoparticles using renewable reducing agents. (c) 2013 Elsevier Ltd. All rights reserved.
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