Control and Switching of Charge-Selective Catalysis on Nanoparticles by Counterions

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Title
Control and Switching of Charge-Selective Catalysis on Nanoparticles by Counterions
Author(s)
Qiang Zhuang; Zhijie Yang; Yaroslav I. Sobolev; Wiktor Beker; Jie Kong; Bartosz A. Grzybowski
Publication Date
2018-08
Journal
ACS CATALYSIS, v.8, no.8, pp.7469 - 7474
Publisher
AMER CHEMICAL SOC
Abstract
It is known that when catalytic nanoparticles are functionalized with charged ligands, the polarity of these ligands can selectively control the approach of either (+) or (-) charged substrates, effectively rendering the particles' catalytic activity charge-selective. In such experiments, however, the role of the counterions surrounding the charged ligands is generally not considered. The present work demonstrates that counterions despite being only loosely bound can have a dramatic effect on the on-particle catalysis. In particular, with the same charged ligands but with counterions of different sizes, catalysis can be allowed or completely blocked. Moreover, when counterions are exchanged, the same particles can be reversibly toggled between catalytically active and inactive states © 2018 American Chemical Society
URI
https://pr.ibs.re.kr/handle/8788114/5237
ISSN
2155-5435
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
Files in This Item:
Qiang Zhuang et all_ACS Catalysis.pdfDownload

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