Conducting and magnetic composites polypyrrole nanotubes/magnetite nanoparticles: application in magnetorheology

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F21%3A00540925" target="_blank" >RIV/61389013:_____/21:00540925 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/21:43896404 RIV/00216208:11320/21:10437404 RIV/70883521:28610/21:63528518 RIV/60461373:22810/21:43922585

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acsanm.1c00063" target="_blank" >https://pubs.acs.org/doi/10.1021/acsanm.1c00063</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsanm.1c00063" target="_blank" >10.1021/acsanm.1c00063</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Conducting and magnetic composites polypyrrole nanotubes/magnetite nanoparticles: application in magnetorheology

Popis výsledku v původním jazyce

The study aims at the design of nanostructured hybrid materials that are both conducting and magnetic. Conducting polypyrrole nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride stimulated by the organic dye, methyl orange. The excess of oxidant involved in the synthesis was used for the in situ generation of magnetite nanoparticles after addition of ammonia that coated the polypyrrole nanotubes. The resulting composites of varying composition were characterized with respect to the specific surface area and by X-ray diffraction and FTIR spectroscopy. The conductivity measurements revealed that polypyrrole nanotubes had a conductivity of ≈20 S cm–1 and the composites with magnetite nanoparticles ≈1 S cm–1 virtually independent of the composition. While polypyrrole nanotubes had marginal magnetic properties, the saturation magnetization of composites reached ≈50 emu g–1, close to that of neat magnetite. The reprotonation of polypyrrole in composites increased the conductivity to ≈5 S cm–1 at the expense of reduction of magnetic properties. The magnetorheological analysis was performed to illustrate their possible application exploiting the nanotubular morphology and requiring a magnetic response.

Název v anglickém jazyce

Conducting and magnetic composites polypyrrole nanotubes/magnetite nanoparticles: application in magnetorheology

Popis výsledku anglicky

The study aims at the design of nanostructured hybrid materials that are both conducting and magnetic. Conducting polypyrrole nanotubes were prepared by the oxidation of pyrrole with iron(III) chloride stimulated by the organic dye, methyl orange. The excess of oxidant involved in the synthesis was used for the in situ generation of magnetite nanoparticles after addition of ammonia that coated the polypyrrole nanotubes. The resulting composites of varying composition were characterized with respect to the specific surface area and by X-ray diffraction and FTIR spectroscopy. The conductivity measurements revealed that polypyrrole nanotubes had a conductivity of ≈20 S cm–1 and the composites with magnetite nanoparticles ≈1 S cm–1 virtually independent of the composition. While polypyrrole nanotubes had marginal magnetic properties, the saturation magnetization of composites reached ≈50 emu g–1, close to that of neat magnetite. The reprotonation of polypyrrole in composites increased the conductivity to ≈5 S cm–1 at the expense of reduction of magnetic properties. The magnetorheological analysis was performed to illustrate their possible application exploiting the nanotubular morphology and requiring a magnetic response.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA19-04859S" target="_blank" >GA19-04859S: Interakce vodivých polymerů s organickými barvivy: Principy a důsledky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS Applied Nano Materials

ISSN

2574-0970

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

2247-2256

Kód UT WoS článku

000624546800135

EID výsledku v databázi Scopus

2-s2.0-85100973229