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Volume 6
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10.3390/suschem6030021
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Article

Toward Green Substitutes: Electrochemical Properties of Conductive Inks Containing Biochar

by
Gordana Stevanović
,
Jovan Parlić
,
Marija Ajduković
,
Nataša Jović-Jovičić
,
Vojkan Radonjić
and
Zorica Mojović
*
Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
*
Author to whom correspondence should be addressed.
Sustain. Chem. 2025, 6(3), 21; https://doi.org/10.3390/suschem6030021
Submission received: 4 July 2025 / Revised: 21 July 2025 / Accepted: 31 July 2025 / Published: 31 July 2025
Versions Notes

Abstract

Dry Turkish oak (Quercus cerris) sawdust, untreated and treated with three activators, (H3PO4, NaOH and H2O2) was pyrolyzed under limited-oxygen conditions to obtain biochar samples. The electrochemical properties of these samples were tested and compared to the properties of several commercial carbon blacks. The electrochemical characterization was performed via cyclic voltammetry, analyzing the response toward two commonly used redox probes, [Fe(CN)6]3−/−4− and [Ru(NH3)6]2+/3+. The influence of the scan rate on this response was investigated, and the resulting data were used to obtain the values of the heterogenous charge transfer constant, k0. Higher k0 values were observed for carbon blacks than for investigated biochar samples. The detection of 4-nitrophenol and heavy metal ions was used to assess the applicability of biochars for electroanalytical purposes. The response of untreated biochar was comparable with the response of Vulcan carbon black, which showed the best response of all analyzed carbon blacks.
Keywords: biochar; carbon black; conductive ink; 4-nitrophenol; heavy metal ions biochar; carbon black; conductive ink; 4-nitrophenol; heavy metal ions

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MDPI and ACS Style

Stevanović, G.; Parlić, J.; Ajduković, M.; Jović-Jovičić, N.; Radonjić, V.; Mojović, Z. Toward Green Substitutes: Electrochemical Properties of Conductive Inks Containing Biochar. Sustain. Chem. 2025, 6, 21. https://doi.org/10.3390/suschem6030021

AMA Style

Stevanović G, Parlić J, Ajduković M, Jović-Jovičić N, Radonjić V, Mojović Z. Toward Green Substitutes: Electrochemical Properties of Conductive Inks Containing Biochar. Sustainable Chemistry. 2025; 6(3):21. https://doi.org/10.3390/suschem6030021

Chicago/Turabian Style

Stevanović, Gordana, Jovan Parlić, Marija Ajduković, Nataša Jović-Jovičić, Vojkan Radonjić, and Zorica Mojović. 2025. "Toward Green Substitutes: Electrochemical Properties of Conductive Inks Containing Biochar" Sustainable Chemistry 6, no. 3: 21. https://doi.org/10.3390/suschem6030021

APA Style

Stevanović, G., Parlić, J., Ajduković, M., Jović-Jovičić, N., Radonjić, V., & Mojović, Z. (2025). Toward Green Substitutes: Electrochemical Properties of Conductive Inks Containing Biochar. Sustainable Chemistry, 6(3), 21. https://doi.org/10.3390/suschem6030021

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