Synthesis of porous carbon xerogel adsorbents with tailored hierarchical porosity and morphology for the selective removal of sulfamethoxazole from water.
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| Title: | Synthesis of porous carbon xerogel adsorbents with tailored hierarchical porosity and morphology for the selective removal of sulfamethoxazole from water. |
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| Authors: | Ortiz-Ramos, Uziel1,2 (AUTHOR), Bailón-García, Esther1 (AUTHOR) estherbg@ugr.es, Pérez-Cadenas, Agustín Francisco1 (AUTHOR), Leyva-Ramos, Roberto2 (AUTHOR), Carrasco-Marín, Francisco1 (AUTHOR) |
| Source: | Environmental Science & Pollution Research. Dec2024, Vol. 31 Issue 59, p67105-67120. 16p. |
| Subject Terms: | *Adsorption capacity, *Dispersive interactions, *Water pollution, *Electrostatic interaction, *Porosity |
| Abstract: | In this work, pellet-type carbon xerogel adsorbents (CXCs) were synthesized through sol–gel polymerization of resorcinol (R) and formaldehyde (F) using Cs2CO3 (Cs) as a catalyst for the removal of sulfamethoxazole (SMX), a hazardous water pollutant. The R/Cs ratio was varied at 100, 500, 1000, and 2000 (denoted CXCs100, CXCs500, CXCs1000, and CXCs2000), resulting in CXCs with a well-defined hierarchical porous structure composed of interconnected spherical particles. Increasing the R/Cs ratio led to larger spherical particle sizes, with pore diameters ranging from 60.7 to 126.6 nm, providing accessible and low flow resistance macroporosity. The maximum adsorption capacity was achieved in the CXCs100 sample (87.8 mg/g), which decreased with increasing R/Cs ratios due to a reduction in total pore volume and meso and macropore areas, indicating that adsorption occurred in macropores and wide mesopores, driven by π-π dispersive interactions. CXCs500 emerged as the optimal adsorbent, with a favorable adsorption capacity (72.0 mg/g) and adequate rigidity (315.9 MPa) to prevent adsorbent breakdown. The adsorption capacity decreased with increasing pH due to electrostatic interactions, and increased with temperature, indicating an endothermic process. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 181830085 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Synthesis of porous carbon xerogel adsorbents with tailored hierarchical porosity and morphology for the selective removal of sulfamethoxazole from water. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ortiz-Ramos%2C+Uziel%22">Ortiz-Ramos, Uziel</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bailón-García%2C+Esther%22">Bailón-García, Esther</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> estherbg@ugr.es</i><br /><searchLink fieldCode="AR" term="%22Pérez-Cadenas%2C+Agustín+Francisco%22">Pérez-Cadenas, Agustín Francisco</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Leyva-Ramos%2C+Roberto%22">Leyva-Ramos, Roberto</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Carrasco-Marín%2C+Francisco%22">Carrasco-Marín, Francisco</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Pollution+Research%22">Environmental Science & Pollution Research</searchLink>. Dec2024, Vol. 31 Issue 59, p67105-67120. 16p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Adsorption+capacity%22">Adsorption capacity</searchLink><br />*<searchLink fieldCode="DE" term="%22Dispersive+interactions%22">Dispersive interactions</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br />*<searchLink fieldCode="DE" term="%22Electrostatic+interaction%22">Electrostatic interaction</searchLink><br />*<searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In this work, pellet-type carbon xerogel adsorbents (CXCs) were synthesized through sol–gel polymerization of resorcinol (R) and formaldehyde (F) using Cs2CO3 (Cs) as a catalyst for the removal of sulfamethoxazole (SMX), a hazardous water pollutant. The R/Cs ratio was varied at 100, 500, 1000, and 2000 (denoted CXCs100, CXCs500, CXCs1000, and CXCs2000), resulting in CXCs with a well-defined hierarchical porous structure composed of interconnected spherical particles. Increasing the R/Cs ratio led to larger spherical particle sizes, with pore diameters ranging from 60.7 to 126.6 nm, providing accessible and low flow resistance macroporosity. The maximum adsorption capacity was achieved in the CXCs100 sample (87.8 mg/g), which decreased with increasing R/Cs ratios due to a reduction in total pore volume and meso and macropore areas, indicating that adsorption occurred in macropores and wide mesopores, driven by π-π dispersive interactions. CXCs500 emerged as the optimal adsorbent, with a favorable adsorption capacity (72.0 mg/g) and adequate rigidity (315.9 MPa) to prevent adsorbent breakdown. The adsorption capacity decreased with increasing pH due to electrostatic interactions, and increased with temperature, indicating an endothermic process. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=181830085 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11356-024-35714-4 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 67105 Subjects: – SubjectFull: Adsorption capacity Type: general – SubjectFull: Dispersive interactions Type: general – SubjectFull: Water pollution Type: general – SubjectFull: Electrostatic interaction Type: general – SubjectFull: Porosity Type: general Titles: – TitleFull: Synthesis of porous carbon xerogel adsorbents with tailored hierarchical porosity and morphology for the selective removal of sulfamethoxazole from water. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ortiz-Ramos, Uziel – PersonEntity: Name: NameFull: Bailón-García, Esther – PersonEntity: Name: NameFull: Pérez-Cadenas, Agustín Francisco – PersonEntity: Name: NameFull: Leyva-Ramos, Roberto – PersonEntity: Name: NameFull: Carrasco-Marín, Francisco IsPartOfRelationships: – BibEntity: Dates: – D: 16 M: 12 Text: Dec2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 09441344 Numbering: – Type: volume Value: 31 – Type: issue Value: 59 Titles: – TitleFull: Environmental Science & Pollution Research Type: main |
| ResultId | 1 |
