Počet záznamů: 1
Reduction of silver ions to silver with polyaniline/poly(vinyl alcohol) cryogels and aerogels
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SYSNO ASEP 0490816 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Reduction of silver ions to silver with polyaniline/poly(vinyl alcohol) cryogels and aerogels Tvůrce(i) Bober, Patrycja (UMCH-V) RID, ORCID, SAI
Trchová, Miroslava (UMCH-V) RID, ORCID
Kovářová, Jana (UMCH-V) RID
Acharya, Udit (UMCH-V) RID, ORCID
Hromádková, Jiřina (UMCH-V) RID
Stejskal, Jaroslav (UMCH-V) RID, ORCID, SAIZdroj.dok. Chemical Papers. - : Springer - ISSN 0366-6352
Roč. 72, č. 7 (2018), s. 1619-1628Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. SK - Slovensko Klíč. slova conducting polymer ; polyaniline ; cryogel Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP GA16-02787S GA ČR - Grantová agentura ČR Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000435829800005 EID SCOPUS 85048809572 DOI 10.1007/s11696-017-0374-6 Anotace The macroporous conducting polymer cryogels were prepared by the oxidation of aniline hydrochloride in the frozen aqueous solutions of poly(vinyl alcohol) at − 24 °C. Corresponding polyaniline aerogels supported with poly(vinyl alcohol) have been obtained after thawing of cryogels followed by freeze-drying. Silver was deposited on the composites using the ability of polyaniline to reduce silver ions after the immersion in silver nitrate solutions. Swollen cryogels were coated only on the surface with macroscopic silver particles due to the closed-pore structure in cryogels and limited penetration of silver ions into macropores. The diffusion of silver ions to freeze-dried aerogels was better and further improved by vacuum treatment. Silver microcubes were produced in the pores, the weight fraction of silver in dry composites being typically several per cent, a maximum 13 wt%. The conductivity of the aerogels compressed to pellets depended on the processing and the highest value was 0.27 S cm−1. The aerogels containing silver were characterized in detail with Raman spectroscopy. Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2019
Počet záznamů: 1