Hydrazine-Enabled One-Step Synthesis of Metal Nanoparticle-Functionalized Gradient Porous Poly(ionic liquid) Membranes
Hydrazine-Enabled One-Step Synthesis of Metal Nanoparticle-Functionalized Gradient Porous Poly(ionic liquid) Membranes
复制标题
肼一步合成金属纳米粒子功能化梯度多孔聚离子液体膜
DOI：
10.1002/marc.202000143
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发表时间：
2020-05-14
影响因子：
4.6
通讯作者：
Yuan, Jiayin
中科院分区：
文献类型：
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作者：
Khorsand Kheirabad, Atefeh;Zhou, Xianjing;Yuan, Jiayin
在这篇通讯中，一步合成路线的报告走向独立的金属纳米粒子功能化的梯度多孔膜（PPM）。这些膜是通过将由疏水性聚离子液体（PIL）、聚丙烯酸和金属盐组成的玻璃板支撑的共混膜浸入肼水溶液中来生产的。当水和肼分子扩散到共混物膜中时，疏水PIL的相分离过程和通过插层络合的离子交联反应并排发生以形成PPM。同时，由于肼的还原性质，聚合物共混物膜内的金属盐被肼原位还原成锚在PPM上的金属纳米颗粒。所得到的杂化多孔膜被证明在对硝基苯酚的催化还原功能。这种一步法生长金属纳米颗粒和梯度多孔膜可以简化未来多功能PPM的制造工艺。
In this communication, a one-step synthetic route is reported toward free-standing metal-nanoparticle-functionalized gradient porous polyelectrolyte membranes (PPMs). The membranes are produced by soaking a glass-plate-supported blend film that consists of a hydrophobic poly(ionic liquid) (PIL), poly(acrylic acid), and a metal salt, into an aqueous hydrazine solution. Upon diffusion of water and hydrazine molecules into the blend film, a phase separation process of the hydrophobic PIL and an ionic crosslinking reaction via interpolyelectrolyte complexation occur side by side to form the PPM. Simultaneously, due to the reductive nature of hydrazine, the metal salt inside the polymer blend film is reduced in situ by hydrazine into metal nanoparticles that anchor onto the PPM. The as-obtained hybrid porous membrane is proven functional in the catalytic reduction of p-nitrophenol. This one-step method to grow metal nanoparticles and gradient porous membranes can simplify future fabrication processes of multifunctional PPMs.