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10.3390/ma16031018
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Article

Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity

by
Marjetka Savić
1,
Aleksandra Janošević Ležaić
2,
Nemanja Gavrilov
3,
Igor Pašti
3,
Bojana Nedić Vasiljević
3,
Jugoslav Krstić
4 and
Gordana Ćirić-Marjanović
3,*
1
Vinča Institute of Nuclear Science, University of Belgrade, National Institute of the Republic of Serbia, P.O. Box 522, 11001 Belgrade, Serbia
2
Faculty of Pharmacy, University of Belgrade, Vojvode Stepe 450, P.O. Box 146, 11221 Belgrade, Serbia
3
Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
4
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.
Materials 2023, 16(3), 1018; https://doi.org/10.3390/ma16031018
Submission received: 19 December 2022 / Revised: 12 January 2023 / Accepted: 18 January 2023 / Published: 22 January 2023
(This article belongs to the Special Issue Advanced Materials for Electrochemical Energy Conversion and Storage -  Volume II)
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Abstract

Composites of carbons with metal oxides and metal sulfides have attracted a lot of interest as materials for energy conversion and storage applications. Herein, we report on novel N,O-doped carbon/ZnO/ZnS and N,O-doped carbon/ZnO composites (generally named C-(MOF-5/PANI)), synthesized by the carbonization of metal–organic framework MOF-5/polyaniline (PANI) composites. The produced C-(MOF-5/PANI)s are comprehensively characterized in terms of composition, molecular and crystalline structure, morphology, electrical conductivity, surface area, and electrochemical behavior. The composition and properties of C-(MOF-5/PANI) composites are dictated by the composition of MOF-5/PANI precursors and the form of PANI (conducting emeraldine salt (ES) or nonconducting emeraldine base). The ZnS phase is formed only with the PANI-ES form due to S-containing counter-ions. XRPD revealed that ZnO and ZnS existed as pure wurtzite crystalline phases. PANI and MOF-5 acted synergistically to produce C-(MOF-5/PANI)s with high SBET (up to 609 m2 g−1), electrical conductivity (up to 0.24 S cm−1), and specific capacitance, Cspec, (up to 238.2 F g−1 at 10 mV s−1). Values of Cspec commensurated with N content in C-(MOF-5/PANI) composites (1–10 wt.%) and overcame Cspec of carbonized individual components PANI and MOF-5. By acid etching treatment of C-(MOF-5/PANI), SBET and Cspec increased to 1148 m2 g−1 and 341 F g−1, respectively. The developed composites represent promising electrode materials for supercapacitors.
Keywords: N,O-doped carbon; capacitance; carbonization; composite; MOF-5; polyaniline; ZnO; ZnS; surface area N,O-doped carbon; capacitance; carbonization; composite; MOF-5; polyaniline; ZnO; ZnS; surface area

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MDPI and ACS Style

Savić, M.; Janošević Ležaić, A.; Gavrilov, N.; Pašti, I.; Nedić Vasiljević, B.; Krstić, J.; Ćirić-Marjanović, G. Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. Materials 2023, 16, 1018. https://doi.org/10.3390/ma16031018

AMA Style

Savić M, Janošević Ležaić A, Gavrilov N, Pašti I, Nedić Vasiljević B, Krstić J, Ćirić-Marjanović G. Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. Materials. 2023; 16(3):1018. https://doi.org/10.3390/ma16031018

Chicago/Turabian Style

Savić, Marjetka, Aleksandra Janošević Ležaić, Nemanja Gavrilov, Igor Pašti, Bojana Nedić Vasiljević, Jugoslav Krstić, and Gordana Ćirić-Marjanović. 2023. "Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity" Materials 16, no. 3: 1018. https://doi.org/10.3390/ma16031018

APA Style

Savić, M., Janošević Ležaić, A., Gavrilov, N., Pašti, I., Nedić Vasiljević, B., Krstić, J., & Ćirić-Marjanović, G. (2023). Carbonization of MOF-5/Polyaniline Composites to N,O-Doped Carbon/ZnO/ZnS and N,O-Doped Carbon/ZnO Composites with High Specific Capacitance, Specific Surface Area and Electrical Conductivity. Materials, 16(3), 1018. https://doi.org/10.3390/ma16031018

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