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Nitrogen-containing carbon enriched with tungsten atoms prepared by carbonization of polyaniline
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SYSNO ASEP 0545073 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nitrogen-containing carbon enriched with tungsten atoms prepared by carbonization of polyaniline Author(s) Milakin, Konstantin A. (UMCH-V) RID
Acharya, Udit (UMCH-V) RID, ORCID
Hromádková, Jiřina (UMCH-V) RID
Trchová, Miroslava (UMCH-V) RID, ORCID
Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAI
Bober, Patrycja (UMCH-V) RID, ORCID, SAISource Title Chemical Papers. - : Springer - ISSN 2585-7290
Roč. 75, č. 10 (2021), s. 5153-5161Number of pages 9 s. Language eng - English Country SK - Slovakia Keywords polyaniline ; heteropolyacids ; reprotonation Subject RIV JI - Composite Materials OECD category Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics R&D Projects GA18-04669S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000632765100001 EID SCOPUS 85103198160 DOI 10.1007/s11696-021-01582-2 Annotation Polyaniline (PANI) salts with tungstosilicic (TSA) and phosphotungstic acids (PTA) were prepared by reprotonation of PANI base. Partial protonation of the precursor base was confirmed by Raman spectroscopy and by conductivity measurements. Conductivity of polyaniline tungstosilicate (PANI-TSA) and polyaniline phosphotungstate (PANI-PTA) after reprotonation measured on compressed pellets was found to be 1 × 10–5 S cm−1 and 4 × 10–6 S cm−1, that is significantly higher compared to conductivity of PANI base (⁓ 10–11 S cm–1). According to thermogravimetric and elemental analyses, the amount of heteropolyacids in the resulting salts was ≈ 20 wt%, which corresponded to ≈ 15 wt% of tungsten. Tungsten- and nitrogen-containing carbon derivatives were obtained by carbonization of the prepared PANI salts without losing their conductivity (⁓10–7 S cm–1). Successful carbonization was confirmed by vibrational spectroscopy. Electron microscopy showed that globular morphology typical for PANI base was not affected by reprotonation and carbonization procedures. Elemental analysis confirmed 25.6 and 17.9 wt% of tungsten, 9.7 and 9.6 wt% of nitrogen in the carbonized PANI-PTA and PANI-TSA, respectively. The prepared carbon derivatives can be potentially useful for electrocatalysis. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2022 Electronic address https://link.springer.com/article/10.1007%2Fs11696-021-01582-2
Number of the records: 1