Metal ion-enriched polyelectrolyte complexes and their utilization in multilayer assembly and catalytic nanocomposite films

Langmuir : the ACS Journal of Surfaces and Colloids
Md Arifur RahimHa-Jin Lee

Abstract

The mixing of Ag ion-doped poly(ethyleneimine) (PEI) and poly(acrylic acid) (PAA) produced Ag ion-doped polyelectrolyte complex particles (PECs) in solution. Positively charged Ag ion-doped PECs (Ag ion PECs) with a spherical shape were deposited alternatively with PAA to form a multilayer assembly. The multilayered film containing Ag ion PECs was reduced to generate a composite nanostructure. Metal nanoparticle (NP)-enriched nanocomposite films were formed by an additional process of the postadsorption of precursors on PECs within the nanocomposite films, which resulted in the enhancement of the catalytic and electrical properties of the composite films. Because the films contain PECs that are responsive to changes in pH and most of the NPs are embedded in the PECs, interesting catalytic properties, which are unexpected in a particle-type catalyst, were observed upon pH changes. As a result of the reversible structural changes of the films and the immobilization of the NPs within the films, the film-type catalysts showed enhanced performance and stability during catalytic reactions under various pH conditions, compared to particle-type catalysts.

References

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Citations

Jun 1, 2016·Journal of Agricultural and Food Chemistry·Zhuangsheng LinJulie M Goddard
Sep 21, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Salinda WijeratneGregory L Baker
Oct 20, 2018·Nature Communications·Tianyu ZhuChuanbing Tang
Dec 21, 2020·Journal of Hazardous Materials·Xiaopeng PeiYongsheng Chen
Aug 27, 2018·Colloids and Surfaces. B, Biointerfaces·Zhuangsheng Lin, Julie M Goddard
Sep 26, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Xiayun HuangNicole S Zacharia
Feb 2, 2018·ACS Applied Materials & Interfaces·Chao LiNicole S Zacharia

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