Behavior of silica mesoporous materials for capacitive deionization desalination

Abstract In the present study, mesoporous silica with a high specific surface area (about 1365 m2/g), pore size (5.96 nm), and excellent hydrophilic surface was used as an electrode in capacitive deionization (CDI). Characterization of the structure and morphology of the fabricated materials was col...

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Main Authors: Fatemeh Hemmati Tirabadi, Ramin M.A.Tehrani, Leila Hajiaghababaei, Alireza Badiei, Afsane Mollahosseini
Format: Article
Language:English
Published: Nature Portfolio 2025-07-01
Series:Scientific Reports
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Online Access:https://doi.org/10.1038/s41598-025-05915-z
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author Fatemeh Hemmati Tirabadi
Ramin M.A.Tehrani
Leila Hajiaghababaei
Alireza Badiei
Afsane Mollahosseini
author_facet Fatemeh Hemmati Tirabadi
Ramin M.A.Tehrani
Leila Hajiaghababaei
Alireza Badiei
Afsane Mollahosseini
author_sort Fatemeh Hemmati Tirabadi
collection DOAJ
description Abstract In the present study, mesoporous silica with a high specific surface area (about 1365 m2/g), pore size (5.96 nm), and excellent hydrophilic surface was used as an electrode in capacitive deionization (CDI). Characterization of the structure and morphology of the fabricated materials was collected by Fourier Transform Infrared Spectroscopy, contact angle, Brunauer–Emmett–Teller, Scanning electron microscopy, Thermogravimetric Analysis, and X-ray diffraction. The electrochemical properties of mesoporous silica were assessed by electrochemical impedance spectroscopy and cyclic voltammetry tests. As a result, mesoporous silica presented a high specific capacitance of 495 F/g. Furthermore, the influence of mesoporous silica electrodes on desalination performance in a NaCl solution (200 mg/L) at 1.2 V was studied. The introduced mesoporous silica showed an excellent salt adsorption capacity of 22.78 mg/g in the CDI cell. Also, the present study investigated the influence of pore size and hydrophilic groups on desalination performance. The results exhibited that the synthetic-mesoporous silica is a powerful potential electrode material for CDI and can be applied for saline water deionization.
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issn 2045-2322
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spelling doaj-art-93c76025d12e46e0ba94e212dffcc03d2025-08-20T03:03:24ZengNature PortfolioScientific Reports2045-23222025-07-0115111910.1038/s41598-025-05915-zBehavior of silica mesoporous materials for capacitive deionization desalinationFatemeh Hemmati Tirabadi0Ramin M.A.Tehrani1Leila Hajiaghababaei2Alireza Badiei3Afsane Mollahosseini4Department of Chemistry, YI.C., Islamic Azad UniversityDepartment of Chemistry, YI.C., Islamic Azad UniversityDepartment of Chemistry, YI.C., Islamic Azad UniversitySchool of Chemistry, College of Science, University of TehranDepartment of Chemistry, Iran University of Science and TechnologyAbstract In the present study, mesoporous silica with a high specific surface area (about 1365 m2/g), pore size (5.96 nm), and excellent hydrophilic surface was used as an electrode in capacitive deionization (CDI). Characterization of the structure and morphology of the fabricated materials was collected by Fourier Transform Infrared Spectroscopy, contact angle, Brunauer–Emmett–Teller, Scanning electron microscopy, Thermogravimetric Analysis, and X-ray diffraction. The electrochemical properties of mesoporous silica were assessed by electrochemical impedance spectroscopy and cyclic voltammetry tests. As a result, mesoporous silica presented a high specific capacitance of 495 F/g. Furthermore, the influence of mesoporous silica electrodes on desalination performance in a NaCl solution (200 mg/L) at 1.2 V was studied. The introduced mesoporous silica showed an excellent salt adsorption capacity of 22.78 mg/g in the CDI cell. Also, the present study investigated the influence of pore size and hydrophilic groups on desalination performance. The results exhibited that the synthetic-mesoporous silica is a powerful potential electrode material for CDI and can be applied for saline water deionization.https://doi.org/10.1038/s41598-025-05915-zWater desalinationCapacitive deionizationMesoporous silicaTrithiocyanuric acid
spellingShingle Fatemeh Hemmati Tirabadi
Ramin M.A.Tehrani
Leila Hajiaghababaei
Alireza Badiei
Afsane Mollahosseini
Behavior of silica mesoporous materials for capacitive deionization desalination
Scientific Reports
Water desalination
Capacitive deionization
Mesoporous silica
Trithiocyanuric acid
title Behavior of silica mesoporous materials for capacitive deionization desalination
title_full Behavior of silica mesoporous materials for capacitive deionization desalination
title_fullStr Behavior of silica mesoporous materials for capacitive deionization desalination
title_full_unstemmed Behavior of silica mesoporous materials for capacitive deionization desalination
title_short Behavior of silica mesoporous materials for capacitive deionization desalination
title_sort behavior of silica mesoporous materials for capacitive deionization desalination
topic Water desalination
Capacitive deionization
Mesoporous silica
Trithiocyanuric acid
url https://doi.org/10.1038/s41598-025-05915-z
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AT leilahajiaghababaei behaviorofsilicamesoporousmaterialsforcapacitivedeionizationdesalination
AT alirezabadiei behaviorofsilicamesoporousmaterialsforcapacitivedeionizationdesalination
AT afsanemollahosseini behaviorofsilicamesoporousmaterialsforcapacitivedeionizationdesalination