Impact of aniline-to-pyrrole ratio on the adsorption performance of polyaniline/polypyrrole aerogels towards anionic dyes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F25%3A00646588" target="_blank" >RIV/61389013:_____/25:00646588 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/25:43933402

Výsledek na webu

<a href="https://link.springer.com/article/10.1007/s42247-025-01130-8" target="_blank" >https://link.springer.com/article/10.1007/s42247-025-01130-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s42247-025-01130-8" target="_blank" >10.1007/s42247-025-01130-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Impact of aniline-to-pyrrole ratio on the adsorption performance of polyaniline/polypyrrole aerogels towards anionic dyes

Popis výsledku v původním jazyce

Macroporous composite aerogels, combining polyaniline (PANI) and polypyrrole (PPy), were synthesized by oxidative cryopolymerization of various ratios of the corresponding comonomers in the presence of poly(vinyl alcohol) (PVAl) stabilizer. The estimate of the conducting polymer and PVAl phase contents in the composite aerogels, made by XPS, allowed correlation of the mechanical properties of the materials with their composition. Tensile measurements showed that tensile modulus and tensile stress at break were mostly determined by the presence of PPy units, while the change in tensile strain at break correlated with the change in the PVAl content. The material, synthesized at 90 mol% of aniline in the comonomer mixture, which contained the highest fraction of the conducting polymer phase, was found to have the best adsorption performance towards the anionic dye, Reactive Black 5. Notably, it had higher fraction of the removed dye, compared to the corresponding homopolymer aerogels. Adsorption isotherm data, fitted by the Langmuir model, showed it having maximum adsorption capacity of 389.1 mg g–1. In addition, the possibility of the adsorbent reusability for at least 5 cycles has been additionally confirmed, which makes the prepared PPy/PANI-PVAl a promising adsorbent for the application in water purification.

Název v anglickém jazyce

Impact of aniline-to-pyrrole ratio on the adsorption performance of polyaniline/polypyrrole aerogels towards anionic dyes

Popis výsledku anglicky

Macroporous composite aerogels, combining polyaniline (PANI) and polypyrrole (PPy), were synthesized by oxidative cryopolymerization of various ratios of the corresponding comonomers in the presence of poly(vinyl alcohol) (PVAl) stabilizer. The estimate of the conducting polymer and PVAl phase contents in the composite aerogels, made by XPS, allowed correlation of the mechanical properties of the materials with their composition. Tensile measurements showed that tensile modulus and tensile stress at break were mostly determined by the presence of PPy units, while the change in tensile strain at break correlated with the change in the PVAl content. The material, synthesized at 90 mol% of aniline in the comonomer mixture, which contained the highest fraction of the conducting polymer phase, was found to have the best adsorption performance towards the anionic dye, Reactive Black 5. Notably, it had higher fraction of the removed dye, compared to the corresponding homopolymer aerogels. Adsorption isotherm data, fitted by the Langmuir model, showed it having maximum adsorption capacity of 389.1 mg g–1. In addition, the possibility of the adsorbent reusability for at least 5 cycles has been additionally confirmed, which makes the prepared PPy/PANI-PVAl a promising adsorbent for the application in water purification.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Emergent Materials

ISSN

2522-5731

e-ISSN

2522-574X

Svazek periodika

8

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

6439-6451

Kód UT WoS článku

001500291200001

EID výsledku v databázi Scopus

2-s2.0-105007079715