Adsorption isotherms and thermal behavior of hybrids based on quercetin and inorganic fillers

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2 Citazioni (Scopus)

Abstract

We investigated the adsorption process of quercetin onto several inorganic fillers, such as kaolinite, calcium carbonate and alumina. Firstly, we performed equilibrium adsorption studies in order to determine the quercetin/filler adsorption isotherms, which were successfully fitted through the Langmuir model. Based on the adsorption data analysis, we estimated the maximum adsorption capacity of each filler as well as the Langmuir constant, which is related to the affinity between quercetin and the surfaces of the inorganic particles. Then, we prepared hybrids formed by fillers saturated with quercetin. The obtained composites were characterized by thermogravimetric analysis with the aim of determining the loading efficiency as well as the effect of the adsorption process on the quercetin thermal stability. According to the Langmuir isotherms, alumina revealed the most efficient support for quercetin adsorption. Finally, we observed that the interactions with the fillers’ surfaces induce a reduction in the quercetin degradation temperature.
Lingua originaleEnglish
pagine (da-a)1971-1977
Numero di pagine7
RivistaJournal of Thermal Analysis and Calorimetry
Volume138
Stato di pubblicazionePublished - 2019

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Quercetin
Adsorption isotherms
fillers
Fillers
isotherms
adsorption
Adsorption
Aluminum Oxide
aluminum oxides
Kaolin
kaolinite
Calcium Carbonate
calcium carbonates
Hot Temperature
Isotherms
affinity
Thermogravimetric analysis
Thermodynamic stability
thermal stability
degradation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cita questo

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title = "Adsorption isotherms and thermal behavior of hybrids based on quercetin and inorganic fillers",
abstract = "We investigated the adsorption process of quercetin onto several inorganic fillers, such as kaolinite, calcium carbonate and alumina. Firstly, we performed equilibrium adsorption studies in order to determine the quercetin/filler adsorption isotherms, which were successfully fitted through the Langmuir model. Based on the adsorption data analysis, we estimated the maximum adsorption capacity of each filler as well as the Langmuir constant, which is related to the affinity between quercetin and the surfaces of the inorganic particles. Then, we prepared hybrids formed by fillers saturated with quercetin. The obtained composites were characterized by thermogravimetric analysis with the aim of determining the loading efficiency as well as the effect of the adsorption process on the quercetin thermal stability. According to the Langmuir isotherms, alumina revealed the most efficient support for quercetin adsorption. Finally, we observed that the interactions with the fillers’ surfaces induce a reduction in the quercetin degradation temperature.",
keywords = "Adsorption isotherms, Alumina, Calcium carbonate, Kaolinite, Quercetin, Thermogravimetry",
author = "Stefana Milioto and Giuseppe Cavallaro and Maurizio Bruno and Giuseppe Lazzara and Stefana Milioto and Giuseppe Lazzara",
year = "2019",
language = "English",
volume = "138",
pages = "1971--1977",
journal = "Journal of Thermal Analysis and Calorimetry",
issn = "1388-6150",
publisher = "Springer Netherlands",

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TY - JOUR

T1 - Adsorption isotherms and thermal behavior of hybrids based on quercetin and inorganic fillers

AU - Milioto, Stefana

AU - Cavallaro, Giuseppe

AU - Bruno, Maurizio

AU - Lazzara, Giuseppe

AU - Milioto, Stefana

AU - Lazzara, Giuseppe

PY - 2019

Y1 - 2019

N2 - We investigated the adsorption process of quercetin onto several inorganic fillers, such as kaolinite, calcium carbonate and alumina. Firstly, we performed equilibrium adsorption studies in order to determine the quercetin/filler adsorption isotherms, which were successfully fitted through the Langmuir model. Based on the adsorption data analysis, we estimated the maximum adsorption capacity of each filler as well as the Langmuir constant, which is related to the affinity between quercetin and the surfaces of the inorganic particles. Then, we prepared hybrids formed by fillers saturated with quercetin. The obtained composites were characterized by thermogravimetric analysis with the aim of determining the loading efficiency as well as the effect of the adsorption process on the quercetin thermal stability. According to the Langmuir isotherms, alumina revealed the most efficient support for quercetin adsorption. Finally, we observed that the interactions with the fillers’ surfaces induce a reduction in the quercetin degradation temperature.

AB - We investigated the adsorption process of quercetin onto several inorganic fillers, such as kaolinite, calcium carbonate and alumina. Firstly, we performed equilibrium adsorption studies in order to determine the quercetin/filler adsorption isotherms, which were successfully fitted through the Langmuir model. Based on the adsorption data analysis, we estimated the maximum adsorption capacity of each filler as well as the Langmuir constant, which is related to the affinity between quercetin and the surfaces of the inorganic particles. Then, we prepared hybrids formed by fillers saturated with quercetin. The obtained composites were characterized by thermogravimetric analysis with the aim of determining the loading efficiency as well as the effect of the adsorption process on the quercetin thermal stability. According to the Langmuir isotherms, alumina revealed the most efficient support for quercetin adsorption. Finally, we observed that the interactions with the fillers’ surfaces induce a reduction in the quercetin degradation temperature.

KW - Adsorption isotherms

KW - Alumina

KW - Calcium carbonate

KW - Kaolinite

KW - Quercetin

KW - Thermogravimetry

UR - http://hdl.handle.net/10447/391507

UR - http://www.springer.com/sgw/cda/frontpage/0,11855,1-40109-70-35752391-0,00.html

M3 - Article

VL - 138

SP - 1971

EP - 1977

JO - Journal of Thermal Analysis and Calorimetry

JF - Journal of Thermal Analysis and Calorimetry

SN - 1388-6150

ER -