Breathing catalyst-supports: CO2 adjustable and magnetic recyclable "smart" hybrid nanoparticles
Breathing catalyst-supports: CO2 adjustable and magnetic recyclable "smart" hybrid nanoparticles
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呼吸催化剂载体：二氧化碳可调和磁性可回收“智能”混合纳米粒子
DOI：
10.1039/c6ra22762g
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
Yuan Jinying
中科院分区：
文献类型：
--
作者：
Feng Anchao;Wang Yun;Peng Liao;Wang Xiaosong;Yuan Jinying
通过在磁性Fe3O4@SiO2纳米球表面引入CO2敏感聚合物基体和金纳米粒子（AuNPs），设计了一种制备CO2气体刺激的磁性可回收混合纳米粒子的简便方法。CO2敏感性壳层的溶胀或塌陷可以调节AuNPs对反应底物的可及性，这可能导致催化活性的增加或降低。因此，所获得的混合系统提供了一种新的策略，通过温和的刺激CO2/N2，其中的磁芯确保磁性可循环催化调节和控制的催化活性。
A facile route for fabricating CO2 gas stimulated, magnetically recyclable hybrid nanoparticle is designed and illustrated through introducing a CO2 sensitive polymeric matrix and gold nanoparticles (AuNPs) onto the surface of magnetic Fe3O4@SiO2 nanospheres. The accessibility of the AuNPs to the reaction substrates can be tuned following swollen or collapsed of CO2 sensitive shell, which may leads to an increase or decrease of catalytic activity. Therefore, the obtained hybrid system offers a novel strategy to adjust and control the catalytic activity through mild stimulation of CO2/N2, where the magnetic core assures a magnetically recyclable catalysis.