文章基本信息

标题：Immobilization of Pt nanoparticles on hydrolyzed polyacrylonitrile-based nanofiber paper
本地全文：下载
作者：Soon Yeol Kwon ; EunJu Ra ; Dong Geon Jung 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2021
卷号：11
DOI：10.1038/s41598-021-90536-5
语种：English
出版社：Springer Nature
摘要：The electrochemical activity of catalysts strongly depends on the uniform distribution of monodisperse Pt nanoparticles without aggregates. Here, we propose a new hydrolysis-assisted smearing method for Pt loading on a free-standing paper-type electrode. Polyacrylonitrile (PAN)-based nanofiber paper was used as the electrode, and it acted as a Pt support. Hydrolysis of the electrode tripled the number of active nucleation sites for Pt adsorption on the PAN nanofibers, thereby significantly enhancing the wettability of the nanofibers. This facilitated the uniform distribution of Pt nanoparticles without aggregate formation up to 40 wt% (about 0.8 mg/cm 2) with a particle size of about 3 nm. The catalytic current of the hydrolyzed Pt electrode in CH 3OH/H 2SO 4 solution exceeded 213 mA/cm 2 Pt mg, which was considerably greater than the current was 148 mA/cm 2 Pt mg for an unhydrolyzed electrode.