TY  - JOUR
AU  - Ilić, Marija
AU  - Haegel, Franz-Hubert
AU  - Lolić, Aleksandar
AU  - Nedić, Zoran
AU  - Tosti, Tomislav
AU  - Ignjatović, Ivana Sredović
AU  - Sredović Ignjatović, Ivana
AU  - Linden, Andreas
AU  - Jablonowski, Nicolai D.
AU  - Hartmann, Heinrich
PY  - 2022
UR  - http://cherry.chem.bg.ac.rs/handle/123456789/5679
AB  - The knowledge of the structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness test for the analytical methods used in this study. Specific problems connected with the pretreatment of samples and drawbacks of some methods for some types of chars could be identified in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main elements, including that of oxygen, and of inorganic components for adequate results. The combination of X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy allows a rough characterization of surface functional groups, but cannot discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spectroscopy did not well correlate with the amount of sp2 hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in conjunction with extensive analytical characterization.
PB  - Public Library of Science
T2  - PLoS ONE
T1  - Surface functional groups and degree of carbonization of selected chars from different processes and feedstock
VL  - 17
IS  - 11
SP  - e0277365
DO  - 10.1371/journal.pone.0277365
ER  - 

@article{
author = "Ilić, Marija and Haegel, Franz-Hubert and Lolić, Aleksandar and Nedić, Zoran and Tosti, Tomislav and Ignjatović, Ivana Sredović and Sredović Ignjatović, Ivana and Linden, Andreas and Jablonowski, Nicolai D. and Hartmann, Heinrich",
year = "2022",
abstract = "The knowledge of the structural and chemical properties of biochars is decisive for their application as technical products. For this reason, methods for the characterization of biochars that are generally applicable and allow quality control are highly desired. Several methods that have shown potential in other studies were used to investigate two activated carbons and seven biochars from different processes and feedstock. The chars were chosen to cover a wide range of chemical composition and structural properties as a hardness test for the analytical methods used in this study. Specific problems connected with the pretreatment of samples and drawbacks of some methods for some types of chars could be identified in an integrated consideration of the results from different methods. None of the spectroscopic methods was found to be suitable for the quality control of all types of chars. The most valuable results were obtained by chemical analysis that, however, required the complete determination of the main elements, including that of oxygen, and of inorganic components for adequate results. The combination of X-ray photoelectron spectroscopy (XPS) and FT-IR spectroscopy allows a rough characterization of surface functional groups, but cannot discriminate aliphatic and aromatic OH groups. FT-IR might be a suitable method for the quality control of biochars made at lower temperature. The results of Raman spectroscopy did not well correlate with the amount of sp2 hybridized carbon determined by XPS. A better correlation of XPS data was found with the electrical polarization determined by the method of spectral induced polarization that was used for the first time in conjunction with extensive analytical characterization.",
publisher = "Public Library of Science",
journal = "PLoS ONE",
title = "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock",
volume = "17",
number = "11",
pages = "e0277365",
doi = "10.1371/journal.pone.0277365"
}

Ilić, M., Haegel, F., Lolić, A., Nedić, Z., Tosti, T., Ignjatović, I. S., Sredović Ignjatović, I., Linden, A., Jablonowski, N. D.,& Hartmann, H.. (2022). Surface functional groups and degree of carbonization of selected chars from different processes and feedstock. in PLoS ONE
Public Library of Science., 17(11), e0277365.
https://doi.org/10.1371/journal.pone.0277365

Ilić M, Haegel F, Lolić A, Nedić Z, Tosti T, Ignjatović IS, Sredović Ignjatović I, Linden A, Jablonowski ND, Hartmann H. Surface functional groups and degree of carbonization of selected chars from different processes and feedstock. in PLoS ONE. 2022;17(11):e0277365.
doi:10.1371/journal.pone.0277365 .

Ilić, Marija, Haegel, Franz-Hubert, Lolić, Aleksandar, Nedić, Zoran, Tosti, Tomislav, Ignjatović, Ivana Sredović, Sredović Ignjatović, Ivana, Linden, Andreas, Jablonowski, Nicolai D., Hartmann, Heinrich, "Surface functional groups and degree of carbonization of selected chars from different processes and feedstock" in PLoS ONE, 17, no. 11 (2022):e0277365,
https://doi.org/10.1371/journal.pone.0277365 . .