Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal
Herein, a green, carbon dioxide-in-water high-internal-phase emulsion (C/W HIPEs) was developed and stabilized with polyvinyl alcohol (PVA) for the formation of chitosan oligosaccharide/poly(acrylamide-co-sodium 4-styrene sulfonate) [COS/P(AM-co-SSS)] monolithic porous hydrogel. The obtained monolit...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-08-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/9/9/703 |
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| author | Kaibo Xu Liqin Cao |
| author_facet | Kaibo Xu Liqin Cao |
| author_sort | Kaibo Xu |
| collection | DOAJ |
| description | Herein, a green, carbon dioxide-in-water high-internal-phase emulsion (C/W HIPEs) was developed and stabilized with polyvinyl alcohol (PVA) for the formation of chitosan oligosaccharide/poly(acrylamide-co-sodium 4-styrene sulfonate) [COS/P(AM-co-SSS)] monolithic porous hydrogel. The obtained monolith was characterized via FT-IR and SEM. The SEM patterns depicted that the monoliths were interconnected, the void sizes were 78.5 µm, and the interconnected pore throats were 28 μm approximately. Mechanical measurement results indicated that the maximum compress stress of the monolith could reach 334.4 kPa at 90% strain, and it exhibited good mechanical stability. After 200 cycles of compression, it could still recover its original shape without cracking. The obtained COS-based monolith was selected to remove tetracycline (TC) for evaluating the adsorptive features of the interpenetrating pore-containing monolith. The monolithic COS/P(AM-co-SSS) hydrogel behaved with strong antibiotic adsorption capacity (1600.4 mg/g for TC). The adsorption process agreed well with the pseudo-second-order kinetic and Langmuir isothermal models. In addition, the porous monolith had a strong electrostatic force on TC according to the thermodynamic study. This work provides a green route for the development of novel monolithic hydrogels and highlights its potential application in the treatment of antibiotic-containing wastewater. |
| first_indexed | 2024-03-10T22:44:54Z |
| format | Article |
| id | doaj.art-f775f0160826406cbe0290e08fc20238 |
| institution | Directory Open Access Journal |
| issn | 2310-2861 |
| language | English |
| last_indexed | 2024-03-10T22:44:54Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj.art-f775f0160826406cbe0290e08fc202382023-11-19T10:50:38ZengMDPI AGGels2310-28612023-08-019970310.3390/gels9090703Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic RemovalKaibo Xu0Liqin Cao1Key Laboratory of Oil and Gas Fine Chemicals, College of Chemistry, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi 830017, ChinaKey Laboratory of Oil and Gas Fine Chemicals, College of Chemistry, Ministry of Education & Xinjiang Uygur Autonomous Region, Xinjiang University, Urumqi 830017, ChinaHerein, a green, carbon dioxide-in-water high-internal-phase emulsion (C/W HIPEs) was developed and stabilized with polyvinyl alcohol (PVA) for the formation of chitosan oligosaccharide/poly(acrylamide-co-sodium 4-styrene sulfonate) [COS/P(AM-co-SSS)] monolithic porous hydrogel. The obtained monolith was characterized via FT-IR and SEM. The SEM patterns depicted that the monoliths were interconnected, the void sizes were 78.5 µm, and the interconnected pore throats were 28 μm approximately. Mechanical measurement results indicated that the maximum compress stress of the monolith could reach 334.4 kPa at 90% strain, and it exhibited good mechanical stability. After 200 cycles of compression, it could still recover its original shape without cracking. The obtained COS-based monolith was selected to remove tetracycline (TC) for evaluating the adsorptive features of the interpenetrating pore-containing monolith. The monolithic COS/P(AM-co-SSS) hydrogel behaved with strong antibiotic adsorption capacity (1600.4 mg/g for TC). The adsorption process agreed well with the pseudo-second-order kinetic and Langmuir isothermal models. In addition, the porous monolith had a strong electrostatic force on TC according to the thermodynamic study. This work provides a green route for the development of novel monolithic hydrogels and highlights its potential application in the treatment of antibiotic-containing wastewater.https://www.mdpi.com/2310-2861/9/9/703high-internal-phase emulsionCO<sub>2</sub>-in-waterchitosan oligosaccharidesmonolithporoushydrogel |
| spellingShingle | Kaibo Xu Liqin Cao Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal Gels high-internal-phase emulsion CO<sub>2</sub>-in-water chitosan oligosaccharides monolith porous hydrogel |
| title | Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal |
| title_full | Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal |
| title_fullStr | Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal |
| title_full_unstemmed | Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal |
| title_short | Sulfonated Hydrogel Formed via CO<sub>2</sub>-in-Water Emulsion: Potential in Antibiotic Removal |
| title_sort | sulfonated hydrogel formed via co sub 2 sub in water emulsion potential in antibiotic removal |
| topic | high-internal-phase emulsion CO<sub>2</sub>-in-water chitosan oligosaccharides monolith porous hydrogel |
| url | https://www.mdpi.com/2310-2861/9/9/703 |
| work_keys_str_mv | AT kaiboxu sulfonatedhydrogelformedviacosub2subinwateremulsionpotentialinantibioticremoval AT liqincao sulfonatedhydrogelformedviacosub2subinwateremulsionpotentialinantibioticremoval |