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

作者：You, Jun; Xiang, Mengxiong; Hu, Haoze; Cai, Jun; Zhou, Jinping^*; Zhang, Yaping

来源：RSC Advances, 2013, 3(42): 19319-19329.

DOI：10.1039/c3ra42242a

• QUATERNIZED CELLULOSE
• ANTIMICROBIAL ACTIVITIES
• GOLD NANOPARTICLES
• NANOCOMPOSITES
• REDUCTION
• PLATINUM
• SIZE
• AU
• NANOSTRUCTURES
• NANOCRYSTALS

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.

• 出版日期2013
• 单位湖北工业大学; 西南科技大学; 武汉大学