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首页> 外文期刊>RSC Advances >Preparation and recyclable catalysis performance of functional macroporous polyHIPE immobilized with gold nanoparticles on its surface
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Preparation and recyclable catalysis performance of functional macroporous polyHIPE immobilized with gold nanoparticles on its surface

机译：表面固定有金纳米粒子的功能性大孔聚HIPE的制备及可循环利用的催化性能

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High internal phase emulsion polymerization was adopted for preparing macroporous polymeric monoliths, polyHIPE–Br (PHIPE–Br). Macroporous PHIPE–Br was used as the initiator to initiate the atom transfer radical polymerization (ATRP) of glycidyl methacrylate (GMA), resulting in a dense coating of polymers on the PHIPE surface and PHIPE–PGMA was obtained. Through a ring-opening addition reaction with TETA, a surface amino-polymer modified functional macroporous PHIPE–PGMA–TETA, was prepared conveniently. Gold nanoparticles could be easily in situ prepared and immobilized on the surface of PHIPE–PGMA–TETA. Characterization by scanning electron microscopy (SEM), EDX-mapping and TGA showed that PHIPE–PGMA–TETA was immobilized by the gold nanoparticles, and presented good catalytic properties. Moreover, the macroporous catalytic material, PHIPE–PGMA–TETA/Au NPs, presented recyclable catalytic performance without any decrease in activity. The materials and methods to form the monoliths and immobilize metal nanoparticles were simple and efficient, thus, opening new possibilities for highly porous PHIPE in catalysis applications.
机译：高内相乳液聚合用于制备大孔聚合物整料polyHIPE-Br（PHIPE-Br）。大孔PHIPE-Br被用作引发剂来引发甲基丙烯酸缩水甘油酯（GMA）的原子转移自由基聚合（ATRP），从而在PHIPE表面上形成致密的聚合物涂层，从而获得了PHIPE-PGMA。通过与TETA的开环加成反应，可以方便地制备表面氨基聚合物改性的功能性大孔PHIPE-PGMA-TETA。金纳米颗粒可以很容易地原位制备并固定在PHIPE-PGMA-TETA的表面上。通过扫描电子显微镜（SEM），EDX映射和TGA表征表明，PHIPE-PGMA-TETA被金纳米颗粒固定，并具有良好的催化性能。此外，大孔催化材料PHIPE–PGMA–TETA / Au NPs具有可回收的催化性能，但活性没有降低。形成整料并固定金属纳米颗粒的材料和方法简单有效，因此为催化应用中的高孔隙度PHIPE开辟了新的可能性。

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