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Preparation of uniform magnetic recoverable catalyst microspheres with hierarchically mesoporous structure by using porous polymer microsphere template

机译:利用多孔聚合物微球模板制备具有介孔结构的均匀磁性可回收催化剂微球

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摘要

Merging nanoparticles with different functions into a single microsphere can exhibit profound impact on various applications. However, retaining the unique properties of each component after integration has proven to be a significant challenge. Our previous research demonstrated a facile method to incorporate magnetic nanoparticles into porous silica microspheres. Here, we report the fabrication of porous silica microspheres embedded with magnetic and gold nanoparticles as magnetic recoverable catalysts. The as-prepared multifunctional composite microspheres exhibit excellent magnetic and catalytic properties and a well-defined structure such as uniform size, high surface area, and large pore volume. As a result, the very little composite microspheres show high performance in catalytic reduction of 4-nitrophenol, special convenient magnetic separability, long life, and good reusability. The unique nanostructure makes the microspheres a novel stable and highly efficient catalyst system for various catalytic industry processes.
机译:将具有不同功能的纳米粒子合并到单个微球中可对各种应用产生深远的影响。然而,事实证明,在集成后保留每个组件的独特属性是一项重大挑战。我们之前的研究表明了一种将磁性纳米粒子掺入多孔二氧化硅微球的简便方法。在这里,我们报告嵌入磁性和金纳米粒子作为磁性可回收催化剂的多孔二氧化硅微球的制造。所制备的多功能复合微球表现出优异的磁性和催化性能,以及明确的结构,例如均匀的尺寸,高的表面积和大的孔体积。结果,很少的复合微球在催化还原4-硝基苯酚方面显示出高性能,特别方便的磁分离性,长寿命和良好的可重复使用性。独特的纳米结构使微球成为适用于各种催化工业过程的新型稳定高效的催化剂体系。

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