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Investigation of the morphology and optical properties of graphene oxide for online diagnostics

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DOIResolve DOI: https://doi.org/10.1016/j.jaerosci.2025.106637
AuthorSearch for: ; Search for: ; Search for: 1ORCID identifier: https://orcid.org/0000-0002-2584-9137; Search for: 1ORCID identifier: https://orcid.org/0000-0002-1877-8529; Search for: 1ORCID identifier: https://orcid.org/0000-0003-1719-7105; Search for: ORCID identifier: https://orcid.org/0000-0001-9611-7462
Affiliation
  1. National Research Council Canada. Metrology Research Centre
FunderSearch for: Natural Sciences and Engineering Research Council of Canada; Search for: National Research Council Canada
FormatText, Article
Subjectgraphene oxide; reduced graphene oxide; optical properties; morphology; Mie theory; online analysis
Abstract
Graphene oxide (GO) particles have a wide and growing range of applications. They may also be converted to reduced graphene oxide (rGO) particles, which are increasingly used in energy storage devices like batteries and supercapacitors. However, the downstream functionality of GO and rGO particles depends strongly on their morphology, which is highly variable depending on the synthesis process. Here, we report morphological and optical properties for GO particles in the aerosol phase. These include the mobility diameter, effective density (0.93 ± 0.06 g/cm³), mass–mobility exponent (2.97 ± 0.06), Angstrom absorption exponent (2.48 between 370 nm and 950 nm), mass absorption cross-section (0.99 ± 0.22 m² g⁻¹), and mass scattering cross-section. Although this study reports measurements on re-aerosolized GO powder, the demonstrated techniques and measured properties serve as a foundation for in-reactor optical diagnostics that may allow for online control of the synthesis processes enabling the ability to control and characterize the functionality of downstream particles.
Publication date
PublisherElsevier Ltd.
Copyright statement
  • Crown Copyright © 2025
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In
  • Journal of Aerosol Science 189, no. C, 106637 (18 June 2025): 1–12.
LanguageEnglish
Peer reviewedYes
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Record identifierd50f6c41-1c5f-4574-932b-e6e38face2e0
Record created2026-03-24
Record modified2026-04-22

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