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Measured in-situ mass absorption spectra for nine forms of highly-absorbing carbonaceous aerosol

Zangmeister, Christopher D. and You, Rian and Lunny, Elizabeth M. and Jacobson, Arne E. and Okumura, Mitchio and Zachariah, Michael R. and Radney, James G. (2018) Measured in-situ mass absorption spectra for nine forms of highly-absorbing carbonaceous aerosol. Carbon, 136 . pp. 85-93. ISSN 0008-6223. http://resolver.caltech.edu/CaltechAUTHORS:20180425-144714026

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Abstract

Mass absorption coefficient spectra were measured between λ = 500 nm and 840 nm for nine forms of highly-absorbing carbonaceous aerosol: five samples generated from gas-, liquid- and solid-fueled flames; spark-discharge fullerene soot; graphene and reduced graphene oxide (rGO) crumpled nanosheets; and fullerene (C_(60)) assemblies. Aerosol absorption spectra were measured for size- and mass-selected particles and found to be dependent on fuel type and formative conditions. Flame-generated particles had morphologies consistent with freshly emitted black carbon (BC) with mass absorption coefficients (MAC) ranging between 3.8 m^2 g^(−1) and 8.6 m^2 g^(−1) at λ = 550 nm. Absorption Ångström exponents (AAE) – i.e. MAC spectral dependence – ranged between 1.0 and 1.3 for flame-generated particles and up to 7.5 for C_(60). The dependence of MAC and AAE on mobility diameter and particle morphology was also investigated. Lastly, the current data were compared to all previously published MAC measurements of highly-absorbing carbonaceous aerosol.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.carbon.2018.04.057DOIArticle
ORCID:
AuthorORCID
Okumura, Mitchio0000-0001-6874-1137
Additional Information:© 2018 Elsevier. Received 8 December 2017, Revised 19 April 2018, Accepted 21 April 2018, Available online 23 April 2018. All authors have given approval of the final version of the manuscript. The authors thank Yong Yang at the University of Maryland for assistance in acquisition of TEM images of some of samples.
Record Number:CaltechAUTHORS:20180425-144714026
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180425-144714026
Official Citation:Christopher D. Zangmeister, Rian You, Elizabeth M. Lunny, Arne E. Jacobson, Mitchio Okumura, Michael R. Zachariah, James G. Radney, Measured in-situ mass absorption spectra for nine forms of highly-absorbing carbonaceous aerosol, Carbon, Volume 136, 2018, Pages 85-93, ISSN 0008-6223, https://doi.org/10.1016/j.carbon.2018.04.057. (http://www.sciencedirect.com/science/article/pii/S0008622318304184)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86042
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:25 Apr 2018 23:18
Last Modified:03 May 2018 15:06

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