Polypyrrole/montmorillonite and polypyrrole/ghassoul intercalates as a source of graphite and multi-layer graphene: preparation of nanocomposites exhibiting strongly anisotropic electrical conductivity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F21%3A10247452" target="_blank" >RIV/61989100:27360/21:10247452 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/21:43896327 RIV/61989100:27640/21:10247452 RIV/61989100:27710/21:10247452

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0025540821002269" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0025540821002269</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.materresbull.2021.111429" target="_blank" >10.1016/j.materresbull.2021.111429</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Polypyrrole/montmorillonite and polypyrrole/ghassoul intercalates as a source of graphite and multi-layer graphene: preparation of nanocomposites exhibiting strongly anisotropic electrical conductivity

Popis výsledku v původním jazyce

Nanocomposite tablets containing graphite and multi-layer graphene formed from polypyrrole (PPy) in the presence of Na-montmorillonite (Mt) and Moroccan clay ghassoul (Gha) were prepared by the calcination of PPy/Mt and PPy/Gha intercalates in argon at 1300 oC. XPS, XRD, Raman, and TEM analyses confirmed that PPy can serve as a precursor of graphite and multi-layer graphene. Although the calcined tablets PPy/Mt(c) and PPy/Gha(c) contain ~ 1/3 of the carbon content compared to a calcined PPy tablet (PPy(c)), the mean values of in-plane electrical conductivity (2476 S/m for PPy/Mt(c) and 2289 S/m for PPy/Gha(c)) are higher than 1837 S/m obtained for PPy(c). Strong anisotropy in electrical conductivity (three orders of magnitude) was achieved for PPy/Mt(c) and PPy/Gha(c) tablets. The similar conductivity, as well as density, porosity, and hardness of PPy/Mt(c) and PPy/Gha(c), demonstrate that Mt and Gha in conjunction with PPy are suitable for the preparation of nanocomposites with strongly anisotropic electrical conductivity.

Název v anglickém jazyce

Polypyrrole/montmorillonite and polypyrrole/ghassoul intercalates as a source of graphite and multi-layer graphene: preparation of nanocomposites exhibiting strongly anisotropic electrical conductivity

Popis výsledku anglicky

Nanocomposite tablets containing graphite and multi-layer graphene formed from polypyrrole (PPy) in the presence of Na-montmorillonite (Mt) and Moroccan clay ghassoul (Gha) were prepared by the calcination of PPy/Mt and PPy/Gha intercalates in argon at 1300 oC. XPS, XRD, Raman, and TEM analyses confirmed that PPy can serve as a precursor of graphite and multi-layer graphene. Although the calcined tablets PPy/Mt(c) and PPy/Gha(c) contain ~ 1/3 of the carbon content compared to a calcined PPy tablet (PPy(c)), the mean values of in-plane electrical conductivity (2476 S/m for PPy/Mt(c) and 2289 S/m for PPy/Gha(c)) are higher than 1837 S/m obtained for PPy(c). Strong anisotropy in electrical conductivity (three orders of magnitude) was achieved for PPy/Mt(c) and PPy/Gha(c) tablets. The similar conductivity, as well as density, porosity, and hardness of PPy/Mt(c) and PPy/Gha(c), demonstrate that Mt and Gha in conjunction with PPy are suitable for the preparation of nanocomposites with strongly anisotropic electrical conductivity.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20500 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Materials Research Bulletin

ISSN

0025-5408

e-ISSN

—

Svazek periodika

142

Číslo periodika v rámci svazku

October 2021

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

1-12

Kód UT WoS článku

000679260700003

EID výsledku v databázi Scopus

2-s2.0-85107741976