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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Autores principales:	Mary Batista, Moisés L. Pinto, Fernando Antunes, João Pires, Silvia Carvalho
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hydrogen sulphide (H<sub>2</sub>S) zeolites activated carbon glycerin chitosan adsorption Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/3bf0c0970be74aa38a25daa5db7f21af
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spelling	oai:doaj.org-article:3bf0c0970be74aa38a25daa5db7f21af2021-11-11T18:12:01ZChitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S10.3390/ma142167011996-1944https://doaj.org/article/3bf0c0970be74aa38a25daa5db7f21af2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6701https://doaj.org/toc/1996-1944The 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.Mary BatistaMoisés L. PintoFernando AntunesJoão PiresSilvia CarvalhoMDPI AGarticlehydrogen sulphide (H<sub>2</sub>S)zeolitesactivated carbonglycerinchitosanadsorptionTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6701, p 6701 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hydrogen sulphide (H<sub>2</sub>S) zeolites activated carbon glycerin chitosan adsorption Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	hydrogen sulphide (H<sub>2</sub>S) zeolites activated carbon glycerin chitosan adsorption Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Mary Batista Moisés L. Pinto Fernando Antunes João Pires Silvia Carvalho Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S
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.
format	article
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
title	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_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_sort	chitosan biocomposites for the adsorption and release of h<sub>2</sub>s
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3bf0c0970be74aa38a25daa5db7f21af
work_keys_str_mv	AT marybatista chitosanbiocompositesfortheadsorptionandreleaseofhsub2subs AT moiseslpinto chitosanbiocompositesfortheadsorptionandreleaseofhsub2subs AT fernandoantunes chitosanbiocompositesfortheadsorptionandreleaseofhsub2subs AT joaopires chitosanbiocompositesfortheadsorptionandreleaseofhsub2subs AT silviacarvalho chitosanbiocompositesfortheadsorptionandreleaseofhsub2subs
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Chitosan Biocomposites for the Adsorption and Release of H<sub>2</sub>S

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