About: Polypyrrole-silver composites prepared by the reduction of silver ions with polypyrrole nanotubes

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1039/c3py00250k
Description	Polypyrrole nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride in the presence of methyl orange. They were subsequently used for the reduction of silver ions to silver nanoparticles. The nanotubular form of polypyrrole is compared with the classical globular morphology in its ability to reduce silver ions. Both polypyrrole salts and bases were used in the experiments. The content of metallic silver in the resulting composite, determined by thermogravimetric analysis, was 21-31 wt%. Elemental composition is also discussed on the basis of energy-dispersive X-ray spectroscopy. Contrary to the expectation, the conductivity of polypyrrole nanotubes in salt form, 35.7 S cm(-1), was reduced to 20.9 S cm(-1) after the incorporation of silver. The presence of silver had generally little effect on the conductivity. The temperature dependence of conductivity reveals that the composites maintain the semiconducting character of polypyrrole and their conductivity increased with increasing temperature. The conductivity of the composites surprisingly increased when the samples were placed in vacuo. Polypyrrole nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride in the presence of methyl orange. They were subsequently used for the reduction of silver ions to silver nanoparticles. The nanotubular form of polypyrrole is compared with the classical globular morphology in its ability to reduce silver ions. Both polypyrrole salts and bases were used in the experiments. The content of metallic silver in the resulting composite, determined by thermogravimetric analysis, was 21-31 wt%. Elemental composition is also discussed on the basis of energy-dispersive X-ray spectroscopy. Contrary to the expectation, the conductivity of polypyrrole nanotubes in salt form, 35.7 S cm(-1), was reduced to 20.9 S cm(-1) after the incorporation of silver. The presence of silver had generally little effect on the conductivity. The temperature dependence of conductivity reveals that the composites maintain the semiconducting character of polypyrrole and their conductivity increased with increasing temperature. The conductivity of the composites surprisingly increased when the samples were placed in vacuo. (en)
Title	Polypyrrole-silver composites prepared by the reduction of silver ions with polypyrrole nanotubes Polypyrrole-silver composites prepared by the reduction of silver ions with polypyrrole nanotubes (en)
skos:prefLabel	Polypyrrole-silver composites prepared by the reduction of silver ions with polypyrrole nanotubes Polypyrrole-silver composites prepared by the reduction of silver ions with polypyrrole nanotubes (en)
skos:notation	RIV/00216208:11320/13:10173184!RIV14-GA0-11320___
http://linked.open...avai/predkladatel	Matematicko-fyzikální fakulta
http://linked.open...avai/riv/aktivita	I P S
http://linked.open...avai/riv/aktivity	I, P(GA13-00270S), P(GAP108/11/1298), P(GPP108/12/P802), S
http://linked.open...iv/cisloPeriodika	12
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Prokeš, Jan Cieslar, Miroslav Varga, Martin
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	97128
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10173184
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	nitrate; polymers; fabrication; nanoparticles; nanocomposites; carbon; films; aniline oligomers; polyaniline nanotubes; conducting polypyrrole (en)
http://linked.open.../riv/klicoveSlovo	polymers nitrate fabrication films nanoparticles nanocomposites polyaniline nanotubes carbon aniline oligomers conducting polypyrrole
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[9971B79053AF]
http://linked.open...i/riv/nazevZdroje	Polymer Chemistry
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Hybrid composites based on conducting polymers Detection layers based on composites of organocomplexes and nanoparticles for chemical sensors Advanced materials for chemical sensors: one-dimensional structures of organic conductive polymers
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	4
http://linked.open...iv/tvurceVysledku	Cieslar, Miroslav Stejskal, Jaroslav Prokeš, Jan Bober, Patrycja Varga, Martin Kopecký, Dusan Skodova, Jitka Vrnata, Martin
http://linked.open...ain/vavai/riv/wos	000319282800021
issn	1759-9954
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1039/c3py00250k
http://localhost/t...ganizacniJednotka	11320

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