Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds

We designed pyrochlore-type potassium niobate (KN) and potassium tantalate (KT) by introducing silver ions to improve their antibacterial efficiency. KN and KT samples were used as ion-exchangeable parent compounds, and molten AgNO3 was used for the ion-exchange reaction. The formation of silver ion...

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Autores principales:	Withanage Isuru Udakara Withanage, Kuda Durayalage Sulasa Devi Ariyapala, Nobuhiro Kumada, Takahiro Takei, Mayu Ueda, Mamoru Aizawa
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	antibacterial activity pyrochlore-type hydrothermal ceramics ion-exchange Clay industries. Ceramics. Glass TP785-869
Acceso en línea:	https://doaj.org/article/8ebc75d0fc25484bafe41b4c34e4328c
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spelling	oai:doaj.org-article:8ebc75d0fc25484bafe41b4c34e4328c2021-12-01T14:41:00ZControllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds2187-076410.1080/21870764.2021.2006877https://doaj.org/article/8ebc75d0fc25484bafe41b4c34e4328c2021-11-01T00:00:00Zhttp://dx.doi.org/10.1080/21870764.2021.2006877https://doaj.org/toc/2187-0764We designed pyrochlore-type potassium niobate (KN) and potassium tantalate (KT) by introducing silver ions to improve their antibacterial efficiency. KN and KT samples were used as ion-exchangeable parent compounds, and molten AgNO3 was used for the ion-exchange reaction. The formation of silver ion-exchanged compounds with various molar ratios, which was investigated by X-ray diffraction (XRD), indicated a clear structural transformation of KN after complete ion-exchange. The antibacterial efficacy of these samples was investigated using the colony count method, and the relative antibacterial activity was compared based on the area of the inhibition zone. The results indicated that silver ion-exchanged samples with molar ratios of Ag/Nb = 0.05, 0.44, 0.67, and Ag/Ta = 0.07, 0.44 0.64 exhibited complete (100%) antibacterial activity against Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative). Among the silver ion-exchanged samples, KAN1 and KAT1 exhibited the highest antibacterial activities because of the controlled release of Ag+ ions through their tunnel structure. In this study, it was found that tunable silver-release properties of pyrochlore-type niobate and tantalate enable the optimization of discharged Ag+ ions, which inhibits the bacterial efficacy in different extents, thus suggesting their use in various biomedical applications.Withanage Isuru Udakara WithanageKuda Durayalage Sulasa Devi AriyapalaNobuhiro KumadaTakahiro TakeiMayu UedaMamoru AizawaTaylor & Francis Grouparticleantibacterial activitypyrochlore-typehydrothermalceramicsion-exchangeClay industries. Ceramics. GlassTP785-869ENJournal of Asian Ceramic Societies, Vol 0, Iss 0, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	antibacterial activity pyrochlore-type hydrothermal ceramics ion-exchange Clay industries. Ceramics. Glass TP785-869
spellingShingle	antibacterial activity pyrochlore-type hydrothermal ceramics ion-exchange Clay industries. Ceramics. Glass TP785-869 Withanage Isuru Udakara Withanage Kuda Durayalage Sulasa Devi Ariyapala Nobuhiro Kumada Takahiro Takei Mayu Ueda Mamoru Aizawa Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
description	We designed pyrochlore-type potassium niobate (KN) and potassium tantalate (KT) by introducing silver ions to improve their antibacterial efficiency. KN and KT samples were used as ion-exchangeable parent compounds, and molten AgNO3 was used for the ion-exchange reaction. The formation of silver ion-exchanged compounds with various molar ratios, which was investigated by X-ray diffraction (XRD), indicated a clear structural transformation of KN after complete ion-exchange. The antibacterial efficacy of these samples was investigated using the colony count method, and the relative antibacterial activity was compared based on the area of the inhibition zone. The results indicated that silver ion-exchanged samples with molar ratios of Ag/Nb = 0.05, 0.44, 0.67, and Ag/Ta = 0.07, 0.44 0.64 exhibited complete (100%) antibacterial activity against Staphylococcus aureus (gram-positive) and Escherichia coli (gram-negative). Among the silver ion-exchanged samples, KAN1 and KAT1 exhibited the highest antibacterial activities because of the controlled release of Ag+ ions through their tunnel structure. In this study, it was found that tunable silver-release properties of pyrochlore-type niobate and tantalate enable the optimization of discharged Ag+ ions, which inhibits the bacterial efficacy in different extents, thus suggesting their use in various biomedical applications.
format	article
author	Withanage Isuru Udakara Withanage Kuda Durayalage Sulasa Devi Ariyapala Nobuhiro Kumada Takahiro Takei Mayu Ueda Mamoru Aizawa
author_facet	Withanage Isuru Udakara Withanage Kuda Durayalage Sulasa Devi Ariyapala Nobuhiro Kumada Takahiro Takei Mayu Ueda Mamoru Aizawa
author_sort	Withanage Isuru Udakara Withanage
title	Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
title_short	Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
title_full	Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
title_fullStr	Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
title_full_unstemmed	Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
title_sort	controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/8ebc75d0fc25484bafe41b4c34e4328c
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Controllable antimicrobial properties of silver ion-exchanged niobate and tantalate compounds

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