Lang P, Kücükmeric E, Huber F, Will S (2024)
Publication Type: Journal article
Publication year: 2024
Book Volume: 130
Article Number: 199
Journal Issue: 11
DOI: 10.1007/s00340-024-08334-6
In this work, iron-oxide nanoparticle formation in the spray-flame synthesis (SFS) process of the standardized SpraySyn 2.0 burner was investigated in situ using laser-induced incandescence (LII). For the evaluation of these measurements, prior LII-experiments within iron-oxide aerosols (Fe3O4 and α-Fe2O3) with known primary particle size distribution and morphological properties were performed to determine the thermal accommodation coefficient (TAC) α, which led to approx. α = 0.08. The applicability of the TAC results within the flame was validated using spectrally and temporally resolved measurements in the flame at 65 mm HAB employing a spectrograph. Data for a bimodal particle size distribution, obtained from Transmission Electron Microscopy (TEM), were used in the LII-evaluation. The validated TAC was then used to evaluate the primary particle size evolution from in situ Time-Resolved (TiRe) LII-measurements using PMTs along the centre axis of the burner, ranging from 10 mm to 50 mm HAB. These measurements reveal a relatively constant effective particle diameter along HAB with dp,eff ≈ 300 nm. To further investigate particle formation in SFS, 2-dimensional time-resolved LII-measurements in the SFS flame were performed, showing a clear particle formation region up to approx. 30 mm HAB, from where on a constant particle mass is observed.
APA:
Lang, P., Kücükmeric, E., Huber, F., & Will, S. (2024). Investigation of iron oxide nanoparticle formation in a spray-flame synthesis process using laser-induced incandescence. Applied Physics B-Lasers and Optics, 130(11). https://doi.org/10.1007/s00340-024-08334-6
MLA:
Lang, Peter, et al. "Investigation of iron oxide nanoparticle formation in a spray-flame synthesis process using laser-induced incandescence." Applied Physics B-Lasers and Optics 130.11 (2024).
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