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Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures

Three-dimensional porous architectures of graphene are desirable for energy storage, catalysis, and sensing applications. Yet it has proven challenging to devise scalable methods capable of producing co-continuous architectures and well-defined, uniform pore and ligament sizes at length scales relev...

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Autores principales: Garcia, Adrian E., Wang, Chen Santillan, Sanderson, Robert N., McDevitt, Kyle M., Zhang, Yunfei, Valdevit, Lorenzo, Mumm, Daniel R., Mohraz, Ali, Ragan, Regina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418730/
https://www.ncbi.nlm.nih.gov/pubmed/36132116
http://dx.doi.org/10.1039/c9na00358d
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author Garcia, Adrian E.
Wang, Chen Santillan
Sanderson, Robert N.
McDevitt, Kyle M.
Zhang, Yunfei
Valdevit, Lorenzo
Mumm, Daniel R.
Mohraz, Ali
Ragan, Regina
author_facet Garcia, Adrian E.
Wang, Chen Santillan
Sanderson, Robert N.
McDevitt, Kyle M.
Zhang, Yunfei
Valdevit, Lorenzo
Mumm, Daniel R.
Mohraz, Ali
Ragan, Regina
author_sort Garcia, Adrian E.
collection PubMed
description Three-dimensional porous architectures of graphene are desirable for energy storage, catalysis, and sensing applications. Yet it has proven challenging to devise scalable methods capable of producing co-continuous architectures and well-defined, uniform pore and ligament sizes at length scales relevant to applications. This is further complicated by processing temperatures necessary for high quality graphene. Here, bicontinuous interfacially jammed emulsion gels (bijels) are formed and processed into sacrificial porous Ni scaffolds for chemical vapor deposition to produce freestanding three-dimensional turbostratic graphene (bi-3DG) monoliths with high specific surface area. Scanning electron microscopy (SEM) images show that the bi-3DG monoliths inherit the unique microstructural characteristics of their bijel parents. Processing of the Ni templates strongly influences the resultant bi-3DG structures, enabling the formation of stacked graphene flakes or fewer-layer continuous films. Despite the multilayer nature, Raman spectra exhibit no discernable defect peak and large relative intensity for the Raman 2D mode, which is a characteristic of turbostratic graphene. Moiré patterns, observed in scanning tunneling microscopy images, further confirm the presence of turbostratic graphene. Nanoindentation of macroscopic pillars reveals a Young's modulus of 30 MPa, one of the highest recorded for sp(2) carbon in a porous structure. Overall, this work highlights the utility of a scalable self-assembly method towards porous high quality graphene constructs with tunable, uniform, and co-continuous microstructure.
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spelling pubmed-94187302022-09-20 Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures Garcia, Adrian E. Wang, Chen Santillan Sanderson, Robert N. McDevitt, Kyle M. Zhang, Yunfei Valdevit, Lorenzo Mumm, Daniel R. Mohraz, Ali Ragan, Regina Nanoscale Adv Chemistry Three-dimensional porous architectures of graphene are desirable for energy storage, catalysis, and sensing applications. Yet it has proven challenging to devise scalable methods capable of producing co-continuous architectures and well-defined, uniform pore and ligament sizes at length scales relevant to applications. This is further complicated by processing temperatures necessary for high quality graphene. Here, bicontinuous interfacially jammed emulsion gels (bijels) are formed and processed into sacrificial porous Ni scaffolds for chemical vapor deposition to produce freestanding three-dimensional turbostratic graphene (bi-3DG) monoliths with high specific surface area. Scanning electron microscopy (SEM) images show that the bi-3DG monoliths inherit the unique microstructural characteristics of their bijel parents. Processing of the Ni templates strongly influences the resultant bi-3DG structures, enabling the formation of stacked graphene flakes or fewer-layer continuous films. Despite the multilayer nature, Raman spectra exhibit no discernable defect peak and large relative intensity for the Raman 2D mode, which is a characteristic of turbostratic graphene. Moiré patterns, observed in scanning tunneling microscopy images, further confirm the presence of turbostratic graphene. Nanoindentation of macroscopic pillars reveals a Young's modulus of 30 MPa, one of the highest recorded for sp(2) carbon in a porous structure. Overall, this work highlights the utility of a scalable self-assembly method towards porous high quality graphene constructs with tunable, uniform, and co-continuous microstructure. RSC 2019-09-18 /pmc/articles/PMC9418730/ /pubmed/36132116 http://dx.doi.org/10.1039/c9na00358d Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Garcia, Adrian E.
Wang, Chen Santillan
Sanderson, Robert N.
McDevitt, Kyle M.
Zhang, Yunfei
Valdevit, Lorenzo
Mumm, Daniel R.
Mohraz, Ali
Ragan, Regina
Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title_full Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title_fullStr Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title_full_unstemmed Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title_short Scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
title_sort scalable synthesis of gyroid-inspired freestanding three-dimensional graphene architectures
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9418730/
https://www.ncbi.nlm.nih.gov/pubmed/36132116
http://dx.doi.org/10.1039/c9na00358d
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