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Thiometallate precursors for the synthesis of supported Pt and PtNi nanoparticle electrocatalysts: Size-focusing by S capping

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Title
Thiometallate precursors for the synthesis of supported Pt and PtNi nanoparticle electrocatalysts: Size-focusing by S capping
Author(s)
Wooyong Choi; Jong Min Kim; Chang-Kyu Hwang; Myeonggi Choe; Seongheon Baek; Hyeong Woo Ban; Da Hwi Gu; Hyewon Jeong; Keun Hwa Chae; Youngjoon Lim; Zonghoon Lee; Jin Young Kim; Jae Sung Son
Subject
SULFUR-DOPED GRAPHENE, ; PLATINUM NANOPARTICLES, ; CARBON NANOTUBES, ; CATALYSTS, ; FUNCTIONALIZATION, ; STABILITY, ; LIGANDS
Publication Date
2020-05
Journal
NANOSCALE, v.12, no.19, pp.10498 - 10504
Publisher
ROYAL SOC CHEMISTRY
Abstract
© 2020 The Royal Society of Chemistry. Herein, we report for the first time the successful preparation of thiometallate-based precursors for use in a bottom-up synthetic process of supported Pt and PtNi nanoparticle catalyst. This precursor enabled the monodisperse synthesis of supported Pt nanoparticles and the in situ formation of S, which were caught directly in a collection system by the nanoparticle synthetic processes consisting of impregnation and thermal processes. S is proven to act as a capping agent in generating highly stable nanoparticles with the size ranging from 2 nm to 3 nm and further favors the formation of monodispersed particles by solid-state digestive ripening. The proposed synthetic methodology can be applied to high-quality PtNi alloy nanoparticle systems. The current route is readily scalable, and multi-gram quantities can be prepared. The prepared carbon-supported Pt and PtNi nanoparticles were characterized as electrocatalysts for the oxygen reduction reaction and exhibited superior performance and durability to commercial Pt/C
URI
https://pr.ibs.re.kr/handle/8788114/7858
DOI
10.1039/c9nr10706a
ISSN
2040-3364
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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