Počet záznamů: 1
Polyaniline-zirconium phosphonate composites: thermal stability and spectroscopic study
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SYSNO ASEP 0531066 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Polyaniline-zirconium phosphonate composites: thermal stability and spectroscopic study Tvůrce(i) Melánová, Klára (UMCH-V) RID, ORCID
Beneš, L. (CZ)
Zima, Vítězslav (UMCH-V) RID, ORCID
Trchová, Miroslava (UMCH-V) RID, ORCID
Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAIČíslo článku 109634 Zdroj.dok. Journal of Physics and Chemistry of Solids. - : Elsevier - ISSN 0022-3697
Roč. 147, December (2020), s. 1-8Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova polyaniline ; composites ; phosphonates Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP GA17-10639S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000567084700002 EID SCOPUS 85088028682 DOI 10.1016/j.jpcs.2020.109634 Anotace Microcomposites of zirconium 4-sulfophenylphosphonate and polyaniline (PANI) and zirconium 4-carboxyphenylphosphonate and PANI were prepared and their thermal decomposition in air and in nitrogen was studied by thermogravimetry. The products of the decomposition of the parent zirconium phosphonates as well as the composites formed with PANI were characterized by energy-dispersive X-ray analysis, elemental analysis, powder X-ray diffraction, IR spectroscopy, and Raman spectroscopy. Heating of the parent hosts and the composites in air to 850 °C leads to their total or almost total conversion to amorphous zirconium diphosphate. In nitrogen, on the other hand, a significant amount of carbon is retained after heating of both the hosts and the composites to 850 °C. The Raman spectra reveal that PANI, which is present as a thin film on the host particles in the starting composites, is converted to a carbon-like material when it is heated in a nitrogen atmosphere. The originally crystalline phosphonates become amorphous after being heated in nitrogen, which means that the heating leads to the destruction of the layered structure of these compounds. IR spectra indicate that the phosphonate particles either in the parent host or in the nanocomposites heated in nitrogen are protected against condensation to zirconium diphosphate. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0022369719322437?via%3Dihub
Počet záznamů: 1