Synthesis of Silver Nanoparticles Templated by TEMPO-Mediated Oxidized Bacterial Cellulose Nanofibers
Synthesis of Silver Nanoparticles Templated by TEMPO-Mediated Oxidized Bacterial Cellulose Nanofibers
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DOI：
10.1021/bm9006979
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发表时间：
2009-09-01
影响因子：
6.2
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Ifuku, Shinsuke;Tsuji, Manami;Yano, Hiroyuki
我们在细菌纤维素（BC）纳米纤维表面制备了银纳米粒子。银纳米颗粒的合成包括2，2，6，6-四甲基哌啶-1-氧自由基（克里思）介导的氧化以在BC纳米纤维表面上引入羧酸酯基团。在AgNO 3溶液中进行钠与银盐的离子交换，然后进行热还原。以氧化后的BC纳米纤维为模板，通过主体羧酸根与客体银阳离子之间的强离子相互作用，制备了粒径分布窄、密度高、稳定的银纳米粒子，并用扫描电镜、紫外可见光谱和小角X射线散射方法对其进行了表征.
We have prepared silver nanoparticles on the surface of bacterial cellulose (BC) nanofibers. The synthesis of silver nanoparticles incorporates 2,2,6,6-tetramethylpiperidine-1-oxyradical (TEMPO)-mediated oxidation to introduce carboxylate groups on the surface of BC nanofibers. An ion exchange of the sodium to the silver salt was performed in AgNO3 solution, followed by thermal reduction. By using oxidized BC nanofibers as a reaction template, we have prepared stable silver nanoparticles with a narrow size distribution and high density through strong ion interactions between host carboxylate groups and guest silver cations, which have been investigated by scanning electron microscopy, UV-visible spectroscopy, and a small-angle X-ray scattering method.