纳米银在TEMPO催化氧化黄麻纤维上的微波原位合成

In situ growth of silver nanoparticles on TEMPO-oxidized jute fibers by microwave heating

金属纳米粒子-纤维素复合材料是一种具有生物相容性和抗菌性的可再生纳米材料,由于其应用功能广泛而备受关注。本文首次研究了不使用还原剂条件下,采用微波原位合成法在TEMPO(2,2,6,6-四甲基哌啶氧化物自由基)选择性氧化黄麻纤维上简便、快速制备银纳米粒子。微波加热5min,纤维上的银纳米粒子平均尺寸为50.0±2.0nm,而加热10min则为90.0±4.7nm。该多功能黄麻-银纳米粒子复合物具有优异的热稳定性和高结晶度。

Cellulose fibers deposited with metallic nanoparticles as one kind of renewable, biocompatible and antimicrobial nanomaterials evoke much interest because of their versatility in various applications. Herein, for the first time, a facile, simple and rapid method was developed to fabricate TEMPO （2,2,6,6-tetramethylpiperidine-l-oxyl radical） selectively oxidized jute fibers in situ deposited with silver nanoparticles in the absence of reducing reagents. The average size of silver nanoparticles deposited on the fibers is 50.0±2.0 nm by microwave heating for 5 min and 90.0±4.7 nm for 10 min heating sample, respectively. The versatile jute-silver nanoparticles nanocomposites with superior thermal stability and high crystallinity would be particularly useful for applications in the public health care and biomedical fields.