Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S
The search for H<sub>2</sub>S donors has been increasing due to the multiple therapeutic effects of the gas. However, the use of nanoporous materials has not been investigated despite their potential. Zeolites and activated carbons are known as good gas adsorbents and their modification...
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MDPI AG
2021-11-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/21/6701 |
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| author | Mary Batista Moisés L. Pinto Fernando Antunes João Pires Silvia Carvalho |
| author_facet | Mary Batista Moisés L. Pinto Fernando Antunes João Pires Silvia Carvalho |
| author_sort | Mary Batista |
| collection | DOAJ |
| description | The search for H<sub>2</sub>S donors has been increasing due to the multiple therapeutic effects of the gas. However, the use of nanoporous materials has not been investigated despite their potential. Zeolites and activated carbons are known as good gas adsorbents and their modification with chitosan may increase the material biocompatibility and simultaneously its release time in aqueous solution, thus making them good H<sub>2</sub>S donors. Herein, we modified with chitosan a series of A zeolites (3A, 4A and 5A) with different pore sizes and an activated carbon obtained from glycerin. The amount of H<sub>2</sub>S adsorbed was evaluated by a volumetric method and their release capacity in aqueous solution was measured. These studies aimed to verify which of the materials had appropriate H<sub>2</sub>S adsorption/release properties to be considered a potential H<sub>2</sub>S donor. Additionally, cytotoxicity assays using HeLa cells were performed. Considering the obtained results, the chitosan composite with the A zeolite with the larger pore opening was the most promising material to be used as a H<sub>2</sub>S donor so a further cytotoxicity assay using H<sub>2</sub>S loaded was conducted and no toxicity was observed. |
| first_indexed | 2024-03-10T05:56:40Z |
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| id | doaj.art-3bf0c0970be74aa38a25daa5db7f21af |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T05:56:40Z |
| publishDate | 2021-11-01 |
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| spelling | doaj.art-3bf0c0970be74aa38a25daa5db7f21af2023-11-22T21:16:10ZengMDPI AGMaterials1996-19442021-11-011421670110.3390/ma14216701Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>SMary Batista0Moisés L. Pinto1Fernando Antunes2João Pires3Silvia Carvalho4Centro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalCERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, PortugalCentro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalCentro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalCentro de Química Estrutural, Faculdade de Ciências da Universidade de Lisboa, 1749-016 Lisboa, PortugalThe search for H<sub>2</sub>S donors has been increasing due to the multiple therapeutic effects of the gas. However, the use of nanoporous materials has not been investigated despite their potential. Zeolites and activated carbons are known as good gas adsorbents and their modification with chitosan may increase the material biocompatibility and simultaneously its release time in aqueous solution, thus making them good H<sub>2</sub>S donors. Herein, we modified with chitosan a series of A zeolites (3A, 4A and 5A) with different pore sizes and an activated carbon obtained from glycerin. The amount of H<sub>2</sub>S adsorbed was evaluated by a volumetric method and their release capacity in aqueous solution was measured. These studies aimed to verify which of the materials had appropriate H<sub>2</sub>S adsorption/release properties to be considered a potential H<sub>2</sub>S donor. Additionally, cytotoxicity assays using HeLa cells were performed. Considering the obtained results, the chitosan composite with the A zeolite with the larger pore opening was the most promising material to be used as a H<sub>2</sub>S donor so a further cytotoxicity assay using H<sub>2</sub>S loaded was conducted and no toxicity was observed.https://www.mdpi.com/1996-1944/14/21/6701hydrogen sulphide (H<sub>2</sub>S)zeolitesactivated carbonglycerinchitosanadsorption |
| spellingShingle | Mary Batista Moisés L. Pinto Fernando Antunes João Pires Silvia Carvalho Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S Materials hydrogen sulphide (H<sub>2</sub>S) zeolites activated carbon glycerin chitosan adsorption |
| title | Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S |
| title_full | Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S |
| title_fullStr | Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S |
| title_full_unstemmed | Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S |
| title_short | Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S |
| title_sort | chitosan biocomposites for the adsorption and release of h sub 2 sub s |
| topic | hydrogen sulphide (H<sub>2</sub>S) zeolites activated carbon glycerin chitosan adsorption |
| url | https://www.mdpi.com/1996-1944/14/21/6701 |
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