Measurement of organic carbon content during the growth of soot particles in propane normal and inverse diffusion flames using a multi-wavelength light extinction method

Lim, Sang‐Min; Lee, Seunghoon; Ahn, Taekook; Park, Sunho

doi:10.1016/j.carbon.2019.04.072

Cited by 13 publications

(1 citation statement)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Understanding the morphological and chemical properties of soot is critical for improving particle soot emission reduction techniques. Spectroscopy (i.e., Raman spectroscopy [10-12, Fourier-transform infrared spectroscopy [12][13][14], UV-vis spectroscopy [15,16], X-ray photoelectron spectroscopy [12,17,18], and electron energy loss spectroscopy [19,20]) is often used to characterize the chemical features of soot, while the microscopy (i.e., scanning probe microscopy [21][22][23], transmission electron microscopy with high resolution [20,24], transmission electron microscopy with high resolution [25][26][27], SEM [28,29], and helium ion microscopy [30,31]) is used for morphological properties studies. Microscopy creates pictures of the spatial distribution of density, composition, or morphology, whereas spectroscopy determines the chemical composition and physical structures of soot.…”

Section: Introductionmentioning

confidence: 99%

FTIR and Raman Spectroscopy Study of Soot Deposits Produced in the Infrared Multiphoton Dissociation of Vinyl Bromide

Samoudi

Bendaou

Hanafi

et al. 2022

Journal of Spectroscopy

View full text Add to dashboard Cite

Even at low concentrations, poly-aromatic hydrocarbons found in soot have substantial health implications. Soot deposits have been reported and studied using FTIR and Raman spectroscopy. Using a CO2 photolysis laser, the samples were obtained via infrared multiphoton dissociation (IRMPD) of vinyl bromide (VBr, C2H3Br) molecules. The solid deposit formed in the IRMPD of VBr when a relatively high fluence of the order of 204 J.cm−2 was analyzed by FTIR, and it was discovered that the majority of its composition is aromatic and aliphatic hydrocarbons. Significant fullerene-type carbonaceous soot particles are also found, which could correspond to C60 and C70 or other carbonaceous agglomerates of a higher order; however, the disappearance of this fullerene on Raman spectra cast doubt on this explanation. Our samples’ Raman spectroscopy has been compared to Tamor and Vassell’s research, which may indicate that they have a lesser degree of hardness and density than these authors’ results, indicating a larger hydrogen content in our samples. The optical gap has been calculated, yielding a very limited range of values ranging only between 1.0 and 1.2 eV, resulting in a crystalline size of 0.58 to 1.12 nm.

show abstract