End-to-End Pierced Carbon Nanosheets with Meso-Holes.

Autor: Kim M; Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Queensland, 4072, Australia., Nara H; Faculty of Science and Engineering and Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan., Asakura Y; Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Aichi, 464-8603, Japan., Hamada T; Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Aichi, 464-8603, Japan., Yan P; College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China., Earnshaw J; Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Queensland, 4072, Australia., An M; College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an, 710021, China., Eguchi M; Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Queensland, 4072, Australia.; Faculty of Science and Engineering and Waseda Research Institute for Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo, 169-8555, Japan., Yamauchi Y; Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland, Queensland, 4072, Australia.; Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, Nagoya, Aichi, 464-8603, Japan.
Jazyk: angličtina
Zdroj: Advanced science (Weinheim, Baden-Wurttemberg, Germany) [Adv Sci (Weinh)] 2024 Nov 25, pp. e2409546. Date of Electronic Publication: 2024 Nov 25.
DOI: 10.1002/advs.202409546
Abstrakt: The remarkable properties of 2D nanomaterials are well known. However, their high interfacial adhesion energy often leads to restacking issues, limiting their potential in various applications. A strategic synthetic approach is presented to overcome this challenge. Specifically, the study first demonstrates the use of layered aluminosilicate as a sacrificial 2D template to allow the growth of highly ordered meso-holey polymeric layers, which can be subsequently exfoliated upon the removal of aluminosilicate and thermally converted to perpendicularly open meso-holey carbon (POMC). On the other hand, perpendicularly blocked meso-holey carbon (PBMC) is obtained with non-sacrificial 2D template of graphene oxide. When both POMC and PBMC are evaluated by operando hydrodynamic electrochemical impedance spectroscopy and transmission line model analysis for electrochemical reduction of oxygen, POMC achieves a remarkable improvement of charge transfer and mass transfer by up to 4.1 and 7.9 times, respectively, as compared to PBMC. This study therefore highlights the importance of perpendicularly open 2D nanoarchitectures in circumventing the restacking effect, offering valuable insights for leveraging 2D nanomaterials with open meso-holes in various applications.
(© 2024 The Author(s). Advanced Science published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
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