Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation

Abstract Herein, Tilia sp. bract leachate was used as the reducing agent for Au nanoparticles (Au NPs) phytosynthesis. The colloidal properties of the prepared Au NPs were determined to confirm their stability over time, and the NPs were then used as active catalysts in soman nerve agent degradation...

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Autores principales:	Veronika Holišová, Martin Urban, Zuzana Konvičková, Marek Kolenčík, Pavel Mančík, Jiří Slabotinský, Gabriela Kratošová, Daniela Plachá
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/483844efa40c47359a2958e4bf66ad4a
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spelling	oai:doaj.org-article:483844efa40c47359a2958e4bf66ad4a2021-12-02T12:11:40ZColloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation10.1038/s41598-021-83460-12045-2322https://doaj.org/article/483844efa40c47359a2958e4bf66ad4a2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83460-1https://doaj.org/toc/2045-2322Abstract Herein, Tilia sp. bract leachate was used as the reducing agent for Au nanoparticles (Au NPs) phytosynthesis. The colloidal properties of the prepared Au NPs were determined to confirm their stability over time, and the NPs were then used as active catalysts in soman nerve agent degradation. The Au NPs characterisation, reproducibility and stability studies were performed under transmission electron microscopy, ultraviolet visible spectroscopy and with ζ-potential measurements. The reaction kinetics was detected by gas chromatography coupled with mass spectrometry detector and solid-phase micro-extraction to confirm the Au NPs applicability in soman hydrolysis. The ‘green’ phytosynthetic formation of colloidal crystalline Au NPs with dominant quasi-spherical shape and 55 ± 10 nm diameter was successfully achieved, and there were no significant differences in morphology, ζ-potential or absorbance values observed during the 5-week period. This verified the prepared colloids’ long-term stability. The soman nerve agent was degraded to non-toxic substances within 24 h, with 0.2156 h−1 reaction rate constant. These results confirmed bio-nanotechnology’s great potential in preparation of stable and functional nanocatalysts for degradation of hazardous substances, including chemical warfare agents.Veronika HolišováMartin UrbanZuzana KonvičkováMarek KolenčíkPavel MančíkJiří SlabotinskýGabriela KratošováDaniela PlacháNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Veronika Holišová Martin Urban Zuzana Konvičková Marek Kolenčík Pavel Mančík Jiří Slabotinský Gabriela Kratošová Daniela Plachá Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
description	Abstract Herein, Tilia sp. bract leachate was used as the reducing agent for Au nanoparticles (Au NPs) phytosynthesis. The colloidal properties of the prepared Au NPs were determined to confirm their stability over time, and the NPs were then used as active catalysts in soman nerve agent degradation. The Au NPs characterisation, reproducibility and stability studies were performed under transmission electron microscopy, ultraviolet visible spectroscopy and with ζ-potential measurements. The reaction kinetics was detected by gas chromatography coupled with mass spectrometry detector and solid-phase micro-extraction to confirm the Au NPs applicability in soman hydrolysis. The ‘green’ phytosynthetic formation of colloidal crystalline Au NPs with dominant quasi-spherical shape and 55 ± 10 nm diameter was successfully achieved, and there were no significant differences in morphology, ζ-potential or absorbance values observed during the 5-week period. This verified the prepared colloids’ long-term stability. The soman nerve agent was degraded to non-toxic substances within 24 h, with 0.2156 h−1 reaction rate constant. These results confirmed bio-nanotechnology’s great potential in preparation of stable and functional nanocatalysts for degradation of hazardous substances, including chemical warfare agents.
format	article
author	Veronika Holišová Martin Urban Zuzana Konvičková Marek Kolenčík Pavel Mančík Jiří Slabotinský Gabriela Kratošová Daniela Plachá
author_facet	Veronika Holišová Martin Urban Zuzana Konvičková Marek Kolenčík Pavel Mančík Jiří Slabotinský Gabriela Kratošová Daniela Plachá
author_sort	Veronika Holišová
title	Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
title_short	Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
title_full	Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
title_fullStr	Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
title_full_unstemmed	Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
title_sort	colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/483844efa40c47359a2958e4bf66ad4a
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Colloidal stability of phytosynthesised gold nanoparticles and their catalytic effects for nerve agent degradation

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