Advantages of soft X-ray absorption over TEM-EELS for solid carbon studies - A comparative study on diesel soot with EELS and NEXAFS

A. Braun; F. E. Huggins; N. Shah; Y. Chen; S. Wirick; S. B. Mun; C. Jacobsen; G. P. Huffman

doi:10.1016/j.carbon.2004.08.029

Advantages of soft X-ray absorption over TEM-EELS for solid carbon studies - A comparative study on diesel soot with EELS and NEXAFS

A. Braun^*, F. E. Huggins, N. Shah, Y. Chen, S. Wirick, S. B. Mun, C. Jacobsen, G. P. Huffman

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

146 Scopus citations

Abstract

Diesel soot was investigated with electron energy loss spectroscopy (EELS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS). The EELS spectra were obtained in connection with transmission electron microscopy studies, whereas the NEXAFS were obtained from a scanning transmission X-ray microscope (STXM) and from a conventional NEXAFS beamline at two synchrotron facilities. The X-ray absorption spectra show molecular species, aliphatics, such as carboxyl, and C-H bonds, which are not visible in EELS spectra of the same material. In particular, EELS fails to detect surface-functional groups, which can be detected with NEXAFS. Since numerous works on molecular carbon structure determined with TEM-EELS have been published, it is possible that these results have to be reassessed.

Original language	English (US)
Pages (from-to)	117-124
Number of pages	8
Journal	Carbon
Volume	43
Issue number	1
DOIs	https://doi.org/10.1016/j.carbon.2004.08.029
State	Published - 2005

Funding

We are grateful to K.E. Kelly (University of Utah) for providing us with the soot samples. Financial support by the National Science Foundation, Grant # CHE-0891333 is gratefully acknowledged. Data taken using the X-1A STXM developed by the group of J. Kirz and C. Jacobsen at SUNY Stony Brook [16,17] , with support from the Office of Biological and Environmental Research, U.S. DOE under contract DE-FG02-89ER60858, and the NSF under grant DBI-9605045. Zone plates were developed by S. Spector and C. Jacobsen of Stony Brook and D. Tennant of Lucent Technologies Bell Labs [18] , with support from the NSF under grant ECS-9510499. NSLS is operated by the SUNY for the U.S. Dept. of Energy, Contract # DE-AC02-76CH-00016. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory.

Keywords

A. Soot
B. Combustion
C. Electron energy loss spectroscopy
D. Functional groups

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1016/j.carbon.2004.08.029

Cite this

@article{b5655fb41d534efca7b73ee2f054a44f,

title = "Advantages of soft X-ray absorption over TEM-EELS for solid carbon studies - A comparative study on diesel soot with EELS and NEXAFS",

abstract = "Diesel soot was investigated with electron energy loss spectroscopy (EELS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS). The EELS spectra were obtained in connection with transmission electron microscopy studies, whereas the NEXAFS were obtained from a scanning transmission X-ray microscope (STXM) and from a conventional NEXAFS beamline at two synchrotron facilities. The X-ray absorption spectra show molecular species, aliphatics, such as carboxyl, and C-H bonds, which are not visible in EELS spectra of the same material. In particular, EELS fails to detect surface-functional groups, which can be detected with NEXAFS. Since numerous works on molecular carbon structure determined with TEM-EELS have been published, it is possible that these results have to be reassessed.",

keywords = "A. Soot, B. Combustion, C. Electron energy loss spectroscopy, D. Functional groups",

author = "A. Braun and Huggins, {F. E.} and N. Shah and Y. Chen and S. Wirick and Mun, {S. B.} and C. Jacobsen and Huffman, {G. P.}",

note = "Funding Information: We are grateful to K.E. Kelly (University of Utah) for providing us with the soot samples. Financial support by the National Science Foundation, Grant # CHE-0891333 is gratefully acknowledged. Data taken using the X-1A STXM developed by the group of J. Kirz and C. Jacobsen at SUNY Stony Brook [16,17] , with support from the Office of Biological and Environmental Research, U.S. DOE under contract DE-FG02-89ER60858, and the NSF under grant DBI-9605045. Zone plates were developed by S. Spector and C. Jacobsen of Stony Brook and D. Tennant of Lucent Technologies Bell Labs [18] , with support from the NSF under grant ECS-9510499. NSLS is operated by the SUNY for the U.S. Dept. of Energy, Contract # DE-AC02-76CH-00016. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

year = "2005",

doi = "10.1016/j.carbon.2004.08.029",

language = "English (US)",

volume = "43",

pages = "117--124",

journal = "Carbon",

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AU - Braun, A.

AU - Huggins, F. E.

AU - Shah, N.

AU - Chen, Y.

AU - Wirick, S.

AU - Mun, S. B.

AU - Jacobsen, C.

AU - Huffman, G. P.

N1 - Funding Information: We are grateful to K.E. Kelly (University of Utah) for providing us with the soot samples. Financial support by the National Science Foundation, Grant # CHE-0891333 is gratefully acknowledged. Data taken using the X-1A STXM developed by the group of J. Kirz and C. Jacobsen at SUNY Stony Brook [16,17] , with support from the Office of Biological and Environmental Research, U.S. DOE under contract DE-FG02-89ER60858, and the NSF under grant DBI-9605045. Zone plates were developed by S. Spector and C. Jacobsen of Stony Brook and D. Tennant of Lucent Technologies Bell Labs [18] , with support from the NSF under grant ECS-9510499. NSLS is operated by the SUNY for the U.S. Dept. of Energy, Contract # DE-AC02-76CH-00016. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, Materials Sciences Division, of the U.S. Department of Energy under Contract No. DE-AC03-76SF00098 at Lawrence Berkeley National Laboratory. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2005

Y1 - 2005

N2 - Diesel soot was investigated with electron energy loss spectroscopy (EELS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS). The EELS spectra were obtained in connection with transmission electron microscopy studies, whereas the NEXAFS were obtained from a scanning transmission X-ray microscope (STXM) and from a conventional NEXAFS beamline at two synchrotron facilities. The X-ray absorption spectra show molecular species, aliphatics, such as carboxyl, and C-H bonds, which are not visible in EELS spectra of the same material. In particular, EELS fails to detect surface-functional groups, which can be detected with NEXAFS. Since numerous works on molecular carbon structure determined with TEM-EELS have been published, it is possible that these results have to be reassessed.

AB - Diesel soot was investigated with electron energy loss spectroscopy (EELS) and near edge X-ray absorption fine structure spectroscopy (NEXAFS). The EELS spectra were obtained in connection with transmission electron microscopy studies, whereas the NEXAFS were obtained from a scanning transmission X-ray microscope (STXM) and from a conventional NEXAFS beamline at two synchrotron facilities. The X-ray absorption spectra show molecular species, aliphatics, such as carboxyl, and C-H bonds, which are not visible in EELS spectra of the same material. In particular, EELS fails to detect surface-functional groups, which can be detected with NEXAFS. Since numerous works on molecular carbon structure determined with TEM-EELS have been published, it is possible that these results have to be reassessed.

KW - A. Soot

KW - B. Combustion

KW - C. Electron energy loss spectroscopy

KW - D. Functional groups

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VL - 43

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JO - Carbon

JF - Carbon

IS - 1

ER -

Advantages of soft X-ray absorption over TEM-EELS for solid carbon studies - A comparative study on diesel soot with EELS and NEXAFS

Abstract

Funding

Keywords

ASJC Scopus subject areas

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