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Graphene inclusion controlling conductivity and gas sorption of metal–organic framework

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Graphene inclusion controlling conductivity and gas sorption of metal–organic framework. / Lamagni, Paolo; Pedersen, Birgitte Lodberg; Godiksen, Anita Lundager; Mossin, Susanne; Hu, Xinming; Pedersen, Steen Uttrup; Daasbjerg, Kim; Lock, Nina.

In: R S C Advances, Vol. 8, No. 25, 2018, p. 13921-13932.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Lamagni, P, Pedersen, BL, Godiksen, AL, Mossin, S, Hu, X, Pedersen, SU, Daasbjerg, K & Lock, N 2018, 'Graphene inclusion controlling conductivity and gas sorption of metal–organic framework', R S C Advances, vol. 8, no. 25, pp. 13921-13932. https://doi.org/10.1039/c8ra02439a

APA

Lamagni, P., Pedersen, B. L., Godiksen, A. L., Mossin, S., Hu, X., Pedersen, S. U., Daasbjerg, K., & Lock, N. (2018). Graphene inclusion controlling conductivity and gas sorption of metal–organic framework. R S C Advances, 8(25), 13921-13932. https://doi.org/10.1039/c8ra02439a

CBE

MLA

Vancouver

Lamagni P, Pedersen BL, Godiksen AL, Mossin S, Hu X, Pedersen SU et al. Graphene inclusion controlling conductivity and gas sorption of metal–organic framework. R S C Advances. 2018;8(25):13921-13932. https://doi.org/10.1039/c8ra02439a

Author

Lamagni, Paolo ; Pedersen, Birgitte Lodberg ; Godiksen, Anita Lundager ; Mossin, Susanne ; Hu, Xinming ; Pedersen, Steen Uttrup ; Daasbjerg, Kim ; Lock, Nina. / Graphene inclusion controlling conductivity and gas sorption of metal–organic framework. In: R S C Advances. 2018 ; Vol. 8, No. 25. pp. 13921-13932.

Bibtex

@article{d10b5a0b13a248649a2a4ae7436a7ca9,
title = "Graphene inclusion controlling conductivity and gas sorption of metal–organic framework",
abstract = "A general approach to prepare composite films of metal–organic frameworks and graphene has beendeveloped. Films of copper(II)-based HKUST-1 and HKUST-1/graphene composites were grownsolvothermally on glassy carbon electrodes. The films were chemically tethered to the substrate bydiazonium electrografting resulting in a large electrode coverage and good stability in solution forelectrochemical studies. HKUST-1 has poor electrical conductivity, but we demonstrate that the additionof graphene to HKUST-1 partially restores the electrochemical activity of the electrodes. The enhancedactivity, however, does not result in copper(II) to copper(I) reduction in HKUST-1 at negative potentials.The materials were characterised in-depth: microscopy and grazing incidence X-ray diffractiondemonstrate uniform films of crystalline HKUST-1, and Raman spectroscopy reveals that graphene ishomogeneously distributed in the films. Gas sorption studies show that both HKUST-1 and HKUST-1/graphene have a large CO2/N2 selectivity, but the composite has a lower surface area and CO2adsorption capacity in comparison with HKUST-1, while CO2 binds stronger to the composite at lowpressures. Electron paramagnetic resonance spectroscopy reveals that both monomeric and dimericcopper units are present in the materials, and that the two materials behave differently upon hydration,i.e. HKUST-1/graphene reacts slower by interaction with water. The changed gas/vapour sorptionproperties and the improved electrochemical activity are two independent consequences of combininggraphene with HKUST-1.",
author = "Paolo Lamagni and Pedersen, {Birgitte Lodberg} and Godiksen, {Anita Lundager} and Susanne Mossin and Xinming Hu and Pedersen, {Steen Uttrup} and Kim Daasbjerg and Nina Lock",
year = "2018",
doi = "10.1039/c8ra02439a",
language = "English",
volume = "8",
pages = "13921--13932",
journal = "R S C Advances",
issn = "2046-2069",
publisher = "RSC Publishing",
number = "25",

}

RIS

TY - JOUR

T1 - Graphene inclusion controlling conductivity and gas sorption of metal–organic framework

AU - Lamagni, Paolo

AU - Pedersen, Birgitte Lodberg

AU - Godiksen, Anita Lundager

AU - Mossin, Susanne

AU - Hu, Xinming

AU - Pedersen, Steen Uttrup

AU - Daasbjerg, Kim

AU - Lock, Nina

PY - 2018

Y1 - 2018

N2 - A general approach to prepare composite films of metal–organic frameworks and graphene has beendeveloped. Films of copper(II)-based HKUST-1 and HKUST-1/graphene composites were grownsolvothermally on glassy carbon electrodes. The films were chemically tethered to the substrate bydiazonium electrografting resulting in a large electrode coverage and good stability in solution forelectrochemical studies. HKUST-1 has poor electrical conductivity, but we demonstrate that the additionof graphene to HKUST-1 partially restores the electrochemical activity of the electrodes. The enhancedactivity, however, does not result in copper(II) to copper(I) reduction in HKUST-1 at negative potentials.The materials were characterised in-depth: microscopy and grazing incidence X-ray diffractiondemonstrate uniform films of crystalline HKUST-1, and Raman spectroscopy reveals that graphene ishomogeneously distributed in the films. Gas sorption studies show that both HKUST-1 and HKUST-1/graphene have a large CO2/N2 selectivity, but the composite has a lower surface area and CO2adsorption capacity in comparison with HKUST-1, while CO2 binds stronger to the composite at lowpressures. Electron paramagnetic resonance spectroscopy reveals that both monomeric and dimericcopper units are present in the materials, and that the two materials behave differently upon hydration,i.e. HKUST-1/graphene reacts slower by interaction with water. The changed gas/vapour sorptionproperties and the improved electrochemical activity are two independent consequences of combininggraphene with HKUST-1.

AB - A general approach to prepare composite films of metal–organic frameworks and graphene has beendeveloped. Films of copper(II)-based HKUST-1 and HKUST-1/graphene composites were grownsolvothermally on glassy carbon electrodes. The films were chemically tethered to the substrate bydiazonium electrografting resulting in a large electrode coverage and good stability in solution forelectrochemical studies. HKUST-1 has poor electrical conductivity, but we demonstrate that the additionof graphene to HKUST-1 partially restores the electrochemical activity of the electrodes. The enhancedactivity, however, does not result in copper(II) to copper(I) reduction in HKUST-1 at negative potentials.The materials were characterised in-depth: microscopy and grazing incidence X-ray diffractiondemonstrate uniform films of crystalline HKUST-1, and Raman spectroscopy reveals that graphene ishomogeneously distributed in the films. Gas sorption studies show that both HKUST-1 and HKUST-1/graphene have a large CO2/N2 selectivity, but the composite has a lower surface area and CO2adsorption capacity in comparison with HKUST-1, while CO2 binds stronger to the composite at lowpressures. Electron paramagnetic resonance spectroscopy reveals that both monomeric and dimericcopper units are present in the materials, and that the two materials behave differently upon hydration,i.e. HKUST-1/graphene reacts slower by interaction with water. The changed gas/vapour sorptionproperties and the improved electrochemical activity are two independent consequences of combininggraphene with HKUST-1.

U2 - 10.1039/c8ra02439a

DO - 10.1039/c8ra02439a

M3 - Journal article

VL - 8

SP - 13921

EP - 13932

JO - R S C Advances

JF - R S C Advances

SN - 2046-2069

IS - 25

ER -