Sponge-like polypyrrole-nanofibrillated cellulose aerogels: synthesis and application

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F21%3A00546031" target="_blank" >RIV/61389013:_____/21:00546031 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/21:10442363

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2021/TC/D1TC03006J" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/TC/D1TC03006J</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/D1TC03006J" target="_blank" >10.1039/D1TC03006J</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sponge-like polypyrrole-nanofibrillated cellulose aerogels: synthesis and application

Popis výsledku v původním jazyce

Nowadays, materials for soft electronics are in high demand, among the different forms of conducting materials, conducting gels have become promising candidates. They provide both the electrical conductivity and mechanical flexibility, which are prerequisites for such applications. Herein, one-step facile preparation of polypyrrole–nanofibrillated cellulose (PPy–NFC) cryogels and their conversion to aerogels are reported. PPy–NFC was prepared via an in situ oxidative polymerization of pyrrole with iron(III) chloride in the presence of NFC under frozen conditions. The mechanical properties of the cryogels were improved by increasing the NFC content from 0.1 to 2 wt%. The tensile modulii of 432 kPa and 1055 kPa were achieved for cryogels and aerogels with 2 wt% of NFC, respectively. SEM micrographs of the aerogels show the formation of entangled three-dimensional porous networks with various pore sizes depending on the NFC content. Lightweight, flexible and conducting aerogels with high specific surface area (34.5–67.3 m2 g−1) were obtained. The conductivity of 31 S cm−1 was attained when 0.7 wt% of NFC was used for cryogel preparation, which is significantly higher than conventional globular PPy. Additionally, aerogels showed improved ability to adsorb heavy metal ions (hexavalent chromium ions) from aqueous solutions owing to their high specific surface area and ion exchange properties.

Název v anglickém jazyce

Sponge-like polypyrrole-nanofibrillated cellulose aerogels: synthesis and application

Popis výsledku anglicky

Nowadays, materials for soft electronics are in high demand, among the different forms of conducting materials, conducting gels have become promising candidates. They provide both the electrical conductivity and mechanical flexibility, which are prerequisites for such applications. Herein, one-step facile preparation of polypyrrole–nanofibrillated cellulose (PPy–NFC) cryogels and their conversion to aerogels are reported. PPy–NFC was prepared via an in situ oxidative polymerization of pyrrole with iron(III) chloride in the presence of NFC under frozen conditions. The mechanical properties of the cryogels were improved by increasing the NFC content from 0.1 to 2 wt%. The tensile modulii of 432 kPa and 1055 kPa were achieved for cryogels and aerogels with 2 wt% of NFC, respectively. SEM micrographs of the aerogels show the formation of entangled three-dimensional porous networks with various pore sizes depending on the NFC content. Lightweight, flexible and conducting aerogels with high specific surface area (34.5–67.3 m2 g−1) were obtained. The conductivity of 31 S cm−1 was attained when 0.7 wt% of NFC was used for cryogel preparation, which is significantly higher than conventional globular PPy. Additionally, aerogels showed improved ability to adsorb heavy metal ions (hexavalent chromium ions) from aqueous solutions owing to their high specific surface area and ion exchange properties.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GA21-01401S" target="_blank" >GA21-01401S: Inovativní kompozity na bázi vodivých polymerů pro čištění vody</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

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Svazek periodika

9

Číslo periodika v rámci svazku

37

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

12615-12623

Kód UT WoS článku

000686293700001

EID výsledku v databázi Scopus

2-s2.0-85116374767