Structural anisotropy in three dimensional macroporous graphene: A polarized XANES investigation
Rezvani SJ, D'Elia A, Macis S, Nannarone S, Lupi S, Schuett F, Rasch F, Adelung R, Lu B, Zhang Z, Qu L, Feng X, Vazquez AR, Marcelli A (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 111
Article Number: 108171
DOI: 10.1016/j.diamond.2020.108171
Abstract
Three-dimensional macroporous graphene sponges with different densities were investigated by angular dependent carbon K-edge X-ray Absorption Near Edge Spectroscopy (XANES) with a linearly polarized beam. The C K-edge XANES analysis shows an unexpected anisotropic behavior of the macroporous graphene random networks. The macroporous graphene sponges expectedly show an exceedingly lower dichroic ratio compared with that of the highly oriented pyrolytic graphite, but spectra clearly points out the occurrence of oriented hexagonal carbon planes. The anisotropy of the investigated samples exhibits a linear dependence with the measured density. The XANES analysis supports the presence of graphene-like, two-dimensional planar structures inside these synthetic sponges and correlates it with different structural networks and/or density in graphene sponges.
Involved external institutions
National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN)
Italy (IT)
Consiglio Nazionale delle Ricerche (CNR) / National Research Council of Italy
Italy (IT)
Christian-Albrechts-Universität zu Kiel
Germany (DE)
Beijing Institute of Technology (BIT) / 北京理工大学
China (CN)
Technische Universität Dresden
Germany (DE)
Italy (IT)
Consiglio Nazionale delle Ricerche (CNR) / National Research Council of Italy
Italy (IT)
Christian-Albrechts-Universität zu Kiel
Germany (DE)
Beijing Institute of Technology (BIT) / 北京理工大学
China (CN)
Technische Universität Dresden
Germany (DE)
How to cite
APA:
Rezvani, S.J., D'Elia, A., Macis, S., Nannarone, S., Lupi, S., Schuett, F.,... Marcelli, A. (2021). Structural anisotropy in three dimensional macroporous graphene: A polarized XANES investigation. Diamond and Related Materials, 111. https://dx.doi.org/10.1016/j.diamond.2020.108171
MLA:
Rezvani, S. J., et al. "Structural anisotropy in three dimensional macroporous graphene: A polarized XANES investigation." Diamond and Related Materials 111 (2021).
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