4.6 Article

Aqueous synthesis of silver nanoparticles stabilized by cationic cellulose and their catalytic and antibacterial activities

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RSC ADVANCES
卷 3, 期 42, 页码 19319-19329

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra42242a

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资金

  1. National Natural Science Foundation of China [50973085, 51273151]
  2. Program for New Century Excellent Talents in University [NCET-11-0415]
  3. National Basic Research Program of China (973 Program) [2010CB732203]
  4. Open Project of State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials
  5. Fundamental Research Funds for the Central Universities

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This work studied the synthesis and stabilization of silver nanoparticles (Ag NPs) in a quaternized cellulose (QC) aqueous solution. In addition, the catalytic and antibacterial activities, as well as the cytotoxicity of QC-Ag NPs are also examined. The results suggest that QC is an ideal protective agent due to the electrosteric stabilization'' provided by its cationic polymer chains. The prepared QC-Ag nanocomposites show high Ag content (93%) and stability, in addition to good solubility in water. QC-Ag NPs are catalytically active in the reduction of p-nitrophenol to p-aminophenol, and QC is shown to play an important role in the catalytic process, significantly enhancing the catalyst efficiency. On the other hand, the results also show that QC-Ag NPs are nontoxic at concentrations sufficient enough to show good antimicrobial activity.

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