膜
联氨(抗抑郁剂)
材料科学
纳米颗粒
聚电解质
化学工程
离子液体
离子键合
高分子化学
盐(化学)
聚合物
金属
水溶液
丙烯酸
化学
催化作用
有机化学
共聚物
纳米技术
复合材料
色谱法
冶金
离子
工程类
生物化学
作者
Atefeh KhorsandKheirabad,Xianjing Zhou,D. Z. Xie,Hong Wang,Jiayin Yuan
标识
DOI:10.1002/marc.202000143
摘要
Abstract 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.
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