Ultralow Crosslinked Microgel Brings Ultrahigh Catalytic Efficiency.,Macromolecular Rapid Communications

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Ultralow Crosslinked Microgel Brings Ultrahigh Catalytic Efficiency.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-06-02 , DOI: 10.1002/marc.202000135
Jinghong Wang _{1,

2} , Yuping Liu ₁ , Xiang Li ₁ , Yan Luo ₁ , Lifang Zheng ₂ , Jun Hu ₂ , Gaojian Chen _{1,

2} , Hong Chen ₁

Affiliation

Microgel nanoreactors maintain the stability of metallic nanoparticles and regulate their catalytic activity. However, limited by the synthetic method, the recycling ability and long‐lasting stability of microgel nanoreactors are challenged. Herein, a brand‐new nanoparticle carrier, ultralow crosslinked poly(N‐isopropylacrylamide‐b‐methacrylic acid) (P(NIPAm‐b‐MAA)) microgel, is synthesized based on the reversible addition‐fragmentation chain transfer polymerization method and the self‐crosslinking mechanism of PNIPAm. This carrier enables the easy preparation, low cost, long‐lasting stability, and high catalytic efficiency of nanoreactors. As far as it is known, the catalytic reduction rates of several dye models used in this work are the highest ones in similar systems. In addition, the presence of the MAA block leads to the agglomeration and dispersion of the microgels under different pH conditions, thus realizing rapid recycling of the nanoreactors. This novel carrier has great potential for a wide range of applications in catalysis.

中文翻译：

超低交联微凝胶带来超高催化效率。

微凝胶纳米反应器保持金属纳米颗粒的稳定性并调节其催化活性。但是，受合成方法的限制，微凝胶纳米反应器的回收能力和持久稳定性受到挑战。在这里，一种全新的纳米颗粒载体，超低交联的聚（N-异丙基丙烯酰胺-b-甲基丙烯酸）（P（NIPAm- b‐MAA））微凝胶是基于可逆加成-断裂链转移聚合方法和PNIPAm的自交联机理合成的。这种载体使纳米反应器易于制备，成本低，持久稳定并具有高催化效率。据了解，这项工作中使用的几种染料模型的催化还原速率是类似系统中最高的。另外，MAA嵌段的存在导致微凝胶在不同pH条件下的团聚和分散，从而实现了纳米反应器的快速再循环。这种新型载体在催化领域具有广泛的应用潜力。

更新日期：2020-07-13

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