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Preparation of versatile yolk-shell nanoparticles with a precious metal yolk and a microporous polymer shell for high-performance catalysts and antibacterial agents
Polymer ( IF 4.6 ) Pub Date : 2018-01-03 , DOI: 10.1016/j.polymer.2017.12.069
Yang Du , Zhike Huang , Shuyi Wu , Kairong Xiong , Xingcai Zhang , Bingna Zheng , Reddeppa Nadimicherla , Ruowen Fu , Dingcai Wu

A new class of yolk-shell structured precious [email protected] polymer nanoparticles has been successfully developed. The polymer shells obtained by hypercrosslinking present well-developed permanent microporosity, controllable thickness, and good mechanical properties, and thus can be utilized to protect the precious metal yolks including Au and Ag nanoparticles from aggregation and inactivation. As a result, compared with unprotected Au nanoparticles, [email protected] polymer nanoparticles not only present a higher utilization efficiency for the catalytic reduction of nitrobenzene and 4-nitrophenol, but also have a much longer cycling life. [email protected] polymer nanoparticles demonstrate highly efficient and long-lasting antibacterial properties, since the microporous shells enable the nanoparticles to release Ag+ from the Ag yolk to the solution in a long-term manner. We hope that our versatile yolk-shell nanoparticles will offer a new thought to solve the structural problems of yolk-shell materials, and thus provide a great opportunity for a spectrum of applications including medicine, catalysis, energy, adsorption and environment.



中文翻译:

制备具有贵金属蛋黄和微孔聚合物壳的通用蛋黄壳纳米颗粒,以用作高性能催化剂和抗菌剂

已成功开发出新型的蛋黄壳结构珍贵的[受电子邮件保护的]聚合物纳米颗粒。通过超交联获得的聚合物壳表现出充分发展的永久微孔性,可控制的厚度和良好的机械性能,因此可用于保护包括金和银纳米颗粒的贵金属蛋黄免于聚集和失活。结果,与未保护的Au纳米颗粒相比,[电子邮件保护的]聚合物纳米颗粒不仅表现出较高的催化还原硝基苯和4-硝基苯酚的利用率,而且具有更长的循环寿命。[受电子邮件保护]聚合物纳米颗粒具有高效且持久的抗菌性能,因为微孔壳使纳米颗粒能够释放Ag +从银蛋黄到溶液。我们希望我们的多功能卵黄壳纳米颗粒能够为解决卵黄壳材料的结构问题提供新思路,从而为医学,催化,能量,吸附和环境等一系列应用提供巨大的机会。

更新日期:2018-01-03
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