• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Novel polystyrene microspheres functionalized by imidazolium and the electrocatalytic activity towards H_2O_2 of its Prussian blue composite
【24h】

Novel polystyrene microspheres functionalized by imidazolium and the electrocatalytic activity towards H_2O_2 of its Prussian blue composite

机译：咪唑官能化的新型聚苯乙烯微球及其普鲁士蓝复合材料对H_2O_2的电催化活性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Copolymerization of styrene (St) and 1-vinyl-3-ethylimidazolium bromide (VEIB), novel poly(St-co-VEIB) microspheres were generated. Owing to the presence of imidazolium groups, such microspheres having an average diameter of 125 nm, behave electropositively when dispersed in aqueous solution. Furthermore, due to the presence of imidazolium groups, having a capacity of ion-exchange and weak reducibility on the surface of the PS microspheres, [Fe(CN)_6]~(3-) was absorbed on the surface of poly(St-co-VEIB) microspheres, and simultaneously, Fe~(3+) was reduced to Fe~(2+). Thus, in situ growth of Prussian blue (PB) nanoparticles could occur on the surface of poly(St-co-VEIB) microspheres without the addition of any other reducing agent. This methodology, utilizing the ion-exchange and weak reducibility properties of the imidazolium groups on the surface of micro-anostructures is a novel general method for assembling hierarchical nanostructured materials. Finally, the electrochemical property of the strawberry-like PS/PB composite microspheres was also investigated by applying a glassy carbon electrode. A good repeatability of the cyclic voltammetry responses, having a good linearity and sensitivity, for the electrocatalytic reduction of H_2O_2 was obtained.
机译：苯乙烯（St）和1-乙烯基-3-乙基咪唑鎓溴化物（VEIB）的共聚反应产生了新型的聚（St-co-VEIB）微球。由于存在咪唑基，平均直径为125nm的这种微球在分散于水溶液中时具有正电性能。此外，由于咪唑鎓基团的存在，在PS微球表面上具有离子交换能力和弱还原性，[Fe（CN）_6]〜（3-）被吸附在聚（St- co-VEIB）微球，并同时将Fe〜（3+）还原为Fe〜（2+）。因此，在不添加任何其他还原剂的情况下，聚（St-co-VEIB）微球表面上可能会发生普鲁士蓝（PB）纳米颗粒的原位生长。这种利用微/纳米结构表面上咪唑基团的离子交换和弱还原性的方法学是一种新颖的组装分层纳米结构材料的通用方法。最后，还通过应用玻璃碳电极研究了草莓样PS / PB复合微球的电化学性能。对于H_2O_2的电催化还原，获得了具有良好线性和灵敏度的循环伏安响应的良好重复性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号