One-step accelerated synthesis of conducting polymer/silver composites and their catalytic reduction of Cr(VI) ions and p-nitrophenol
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F23%3A00572185" target="_blank" >RIV/61389013:_____/23:00572185 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.mdpi.com/2073-4360/15/10/2366" target="_blank" >https://www.mdpi.com/2073-4360/15/10/2366</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/polym15102366" target="_blank" >10.3390/polym15102366</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
One-step accelerated synthesis of conducting polymer/silver composites and their catalytic reduction of Cr(VI) ions and p-nitrophenol
Popis výsledku v původním jazyce
In this paper, silver nitrate was used as an oxidant to prepare polyaniline, polypyrrole, and poly(3,4-ethylene dioxythiophene)/silver composites through a simultaneous oxidation/reduction process. In addition, p-phenylenediamine was added with 1 mole% relative to the concentrations of the monomers to accelerate the polymerization reaction. The prepared conducting polymer/silver composites were characterized by scanning and transmission electron microscopies to study their morphologies, Fourier-transform infrared and Raman spectroscopies to confirm their molecular structures, and thermogravimetric analysis (TGA) to study their thermal stabilities. The silver content in the composites was estimated by energy-dispersive X-ray spectroscopy, ash analysis, and TGA. The conducting polymer/silver composites were utilized for the remediation of water pollutants through catalytic reduction. Hexavalent chromium ions (Cr(VI)) were photocatalytically reduced to trivalent chromium ions, and p-nitrophenol was catalytically reduced to p-aminophenol. The catalytic reduction reactions were found to follow the first-order kinetic model. Among the prepared composites, polyaniline/silver composite has shown the highest activity for the photocatalytic reduction of Cr(VI) ions with an apparent rate constant of 0.226 min–1 and efficiency of 100% within 20 min. Additionally, poly(3,4-ethylene dioxythiophene)/silver composite showed the highest catalytic activity towards the reduction of p-nitrophenol with an apparent rate constant of 0.445 min–1 and efficiency of 99.8% within 12 min.n
Název v anglickém jazyce
One-step accelerated synthesis of conducting polymer/silver composites and their catalytic reduction of Cr(VI) ions and p-nitrophenol
Popis výsledku anglicky
In this paper, silver nitrate was used as an oxidant to prepare polyaniline, polypyrrole, and poly(3,4-ethylene dioxythiophene)/silver composites through a simultaneous oxidation/reduction process. In addition, p-phenylenediamine was added with 1 mole% relative to the concentrations of the monomers to accelerate the polymerization reaction. The prepared conducting polymer/silver composites were characterized by scanning and transmission electron microscopies to study their morphologies, Fourier-transform infrared and Raman spectroscopies to confirm their molecular structures, and thermogravimetric analysis (TGA) to study their thermal stabilities. The silver content in the composites was estimated by energy-dispersive X-ray spectroscopy, ash analysis, and TGA. The conducting polymer/silver composites were utilized for the remediation of water pollutants through catalytic reduction. Hexavalent chromium ions (Cr(VI)) were photocatalytically reduced to trivalent chromium ions, and p-nitrophenol was catalytically reduced to p-aminophenol. The catalytic reduction reactions were found to follow the first-order kinetic model. Among the prepared composites, polyaniline/silver composite has shown the highest activity for the photocatalytic reduction of Cr(VI) ions with an apparent rate constant of 0.226 min–1 and efficiency of 100% within 20 min. Additionally, poly(3,4-ethylene dioxythiophene)/silver composite showed the highest catalytic activity towards the reduction of p-nitrophenol with an apparent rate constant of 0.445 min–1 and efficiency of 99.8% within 12 min.n
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10404 - Polymer science
Návaznosti výsledku
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
Ostatní
Rok uplatnění
2023
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Polymers
ISSN
2073-4360
e-ISSN
2073-4360
Svazek periodika
15
Číslo periodika v rámci svazku
10
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
15
Strana od-do
2366
Kód UT WoS článku
000996593600001
EID výsledku v databázi Scopus
2-s2.0-85160644756