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나노 구조 물리 연구단
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Hydrogen adsorption engineering by intramolecular proton transfer on 2D nanosheets

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Title
Hydrogen adsorption engineering by intramolecular proton transfer on 2D nanosheets
Author(s)
Hanleem Lee; Sora Bak; Yunhee Cho; Meeree Kim; Se Hwang Kang; Viet Q. Bui; Hung M. Le; Sung Wng Kim; Hyoyoung Lee
Publication Date
2018-05
Journal
NPG Asia Materials, v.10, no.5, pp.441 - 454
Publisher
NATURE PUBLISHING GROUP
Abstract
Proton transfer has been intensively researched in the catalysis of reactions involving hydrogen, such as the hydrogen evolution reaction (HER), oxygen evolution reaction, and carbon dioxide reduction. Recently, two-dimensional (2D) materials have gained attention as catalysts for these reactions, and their catalytic effect upon changing the size, shape, thickness, and phase has been studied. However, there are no reports on the role of proton transfer in catalysis by 2D materials. Here, a novel way to enhance the catalytic effect of 2D MoS2 was demonstrated via functionalization with four different organic moieties: phenyl–Me, phenyl–OMe, phenyl–OH, and phenyl–COOH groups. The role of proton transfer in 2D catalysis was carefully investigated via electrochemical kinetic analysis and electrical measurement. The best HER performance was observed with proton-donating COOH-functionalized active materials due to intramolecular proton transfer, which shows potential in hydrogen adsorption engineering using proton transfer. In addition, other molecularly functionalized 2D catalysts, including MoTe2 and graphene, also show proton transfer due to the incorporation of organic moieties, providing enhanced HER performance. [Figure not available: see fulltext.] © 2018 The Author(s
URI
https://pr.ibs.re.kr/handle/8788114/4514
ISSN
1884-4049
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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