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Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction

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Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction. / Martin, Andrew V.; Bøjesen, Espen D.; Petersen, Timothy C.; Hu, Cheng; Biggs, Mark J.; Weyland, Matthew; Liu, Amelia C.Y.

In: Small, Vol. 16, No. 24, 2000828, 06.2020.

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

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APA

Martin, A. V., Bøjesen, E. D., Petersen, T. C., Hu, C., Biggs, M. J., Weyland, M., & Liu, A. C. Y. (2020). Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction. Small, 16(24), [2000828]. https://doi.org/10.1002/smll.202000828

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Martin, Andrew V. ; Bøjesen, Espen D. ; Petersen, Timothy C. ; Hu, Cheng ; Biggs, Mark J. ; Weyland, Matthew ; Liu, Amelia C.Y. / Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction. In: Small. 2020 ; Vol. 16, No. 24.

Bibtex

@article{1cde93a38c1547508d540320e2f42f9d,
title = "Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction",
abstract = "How the structure of disordered porous carbons evolves during their activation is particularly poorly understood. This problem endures primarily because of a lack of high-resolution 3D techniques for the characterization of amorphous and highly disordered structure. To address this, the measurement of the 3D pair-angle distribution function using nanodiffraction patterns from high-energy electrons is demonstrated. These rich multiatom correlations are measured for a disordered carbon and they clearly show the structural evolution during activation. They provide previously inaccessible bond-angle information and direct evidence for the presence of ring and adatom defects. An increase in the short-range order and the number of fivefold ring defects with activation are observed, indicating stress relaxation by increasing curvature. These observations support models of disordered porous carbons based on curved graphene networks and explain how large amounts of free volume can be created with surprisingly small changes in the average ratios of tetrahedral to graphitic bonding.",
keywords = "activated carbon, defects, disordered materials, electron diffraction, fluctuation microscopy, pair-angle distribution function",
author = "Martin, {Andrew V.} and B{\o}jesen, {Espen D.} and Petersen, {Timothy C.} and Cheng Hu and Biggs, {Mark J.} and Matthew Weyland and Liu, {Amelia C.Y.}",
year = "2020",
month = jun,
doi = "10.1002/smll.202000828",
language = "English",
volume = "16",
journal = "Small",
issn = "1613-6810",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
number = "24",

}

RIS

TY - JOUR

T1 - Detection of Ring and Adatom Defects in Activated Disordered Carbon via Fluctuation Nanobeam Electron Diffraction

AU - Martin, Andrew V.

AU - Bøjesen, Espen D.

AU - Petersen, Timothy C.

AU - Hu, Cheng

AU - Biggs, Mark J.

AU - Weyland, Matthew

AU - Liu, Amelia C.Y.

PY - 2020/6

Y1 - 2020/6

N2 - How the structure of disordered porous carbons evolves during their activation is particularly poorly understood. This problem endures primarily because of a lack of high-resolution 3D techniques for the characterization of amorphous and highly disordered structure. To address this, the measurement of the 3D pair-angle distribution function using nanodiffraction patterns from high-energy electrons is demonstrated. These rich multiatom correlations are measured for a disordered carbon and they clearly show the structural evolution during activation. They provide previously inaccessible bond-angle information and direct evidence for the presence of ring and adatom defects. An increase in the short-range order and the number of fivefold ring defects with activation are observed, indicating stress relaxation by increasing curvature. These observations support models of disordered porous carbons based on curved graphene networks and explain how large amounts of free volume can be created with surprisingly small changes in the average ratios of tetrahedral to graphitic bonding.

AB - How the structure of disordered porous carbons evolves during their activation is particularly poorly understood. This problem endures primarily because of a lack of high-resolution 3D techniques for the characterization of amorphous and highly disordered structure. To address this, the measurement of the 3D pair-angle distribution function using nanodiffraction patterns from high-energy electrons is demonstrated. These rich multiatom correlations are measured for a disordered carbon and they clearly show the structural evolution during activation. They provide previously inaccessible bond-angle information and direct evidence for the presence of ring and adatom defects. An increase in the short-range order and the number of fivefold ring defects with activation are observed, indicating stress relaxation by increasing curvature. These observations support models of disordered porous carbons based on curved graphene networks and explain how large amounts of free volume can be created with surprisingly small changes in the average ratios of tetrahedral to graphitic bonding.

KW - activated carbon

KW - defects

KW - disordered materials

KW - electron diffraction

KW - fluctuation microscopy

KW - pair-angle distribution function

UR - http://www.scopus.com/inward/record.url?scp=85085148656&partnerID=8YFLogxK

U2 - 10.1002/smll.202000828

DO - 10.1002/smll.202000828

M3 - Journal article

C2 - 32383542

AN - SCOPUS:85085148656

VL - 16

JO - Small

JF - Small

SN - 1613-6810

IS - 24

M1 - 2000828

ER -