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Oheix E, Reicher C, Nouali H, Michelin L, Josien L, Daou TJ, Pieuchot L. Rational Design and Characterisation of Novel Mono- and Bimetallic Antibacterial Linde Type A Zeolite Materials. J Funct Biomater 2022; 13:jfb13020073. [PMID: 35735928 PMCID: PMC9224897 DOI: 10.3390/jfb13020073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 11/21/2022] Open
Abstract
The development of antimicrobial devices and surfaces requires the setup of suitable materials, able to store and release active principles. In this context, zeolites, which are microporous aluminosilicate minerals, hold great promise, since they are able to serve as a reservoir for metal-ions with antimicrobial properties. Here, we report on the preparation of Linde Type A zeolites, partially exchanged with combinations of metal-ions (Ag+, Cu2+, Zn2+) at different loadings (0.1–11.9 wt.%). We combine X-ray fluorescence, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction to monitor the metal-ion contents, distribution, and conservation of the zeolite structure after exchange. Then, we evaluate their antimicrobial activity, using agar dilution and optical-density monitoring of Escherichia coli cultures. The results indicate that silver-loaded materials are at least 70-fold more active than the copper-, zinc-, and non-exchanged ones. Moreover, zeolites loaded with lower Ag+ concentrations remain active down to 0.1 wt.%, and their activities are directly proportional to the total Ag content. Sequential exchanges with two metal ions (Ag+ and either Cu2+, Zn2+) display synergetic or antagonist effects, depending on the quantity of the second metal. Altogether, this work shows that, by combining analytical and quantitative methods, it is possible to fine-tune the composition of bi-metal-exchanged zeolites, in order to maximise their antimicrobial potential, opening new ways for the development of next-generation composite zeolite-containing antimicrobial materials, with potential applications for the design of dental or bone implants, as well as biomedical devices and pharmaceutical products.
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Affiliation(s)
- Emmanuel Oheix
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Chloé Reicher
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Habiba Nouali
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Laure Michelin
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Ludovic Josien
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - T. Jean Daou
- Aptar CSP Technology, 9 rue du Sandholz, F-67110 Niederbronn les Bains, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
| | - Laurent Pieuchot
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
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Ceramic-Based Composite Membrane with a Porous Network Surface Featuring a Highly Stable Flux for Drinking Water Purification. MEMBRANES 2019; 9:membranes9010005. [PMID: 30609714 PMCID: PMC6359389 DOI: 10.3390/membranes9010005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/19/2018] [Accepted: 12/26/2018] [Indexed: 11/17/2022]
Abstract
Highly efficient drinking water purification is still an important challenge for membrane techniques where high flux, high rejection, and low fouling are highly emphasized. In the present work, a porous network surface with carbon nanotubes (CNTs) was in situ constructed on hierarchically-structured mullite ceramic membranes. Interestingly, such a composite structure was demonstrated to effectively remove bacteria from drinking water with a highly stable long-term flux. After membrane structure characterizations, separation performance, such as flux and rejection, was assessed by the purification of bacteria-contaminated drinking water. The results confirmed that the mullite-CNT composite membrane claimed a complete removal of two model bacteria (100% rejection of Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus)), driven by a trans-membrane pressure of 0.1 MPa, where a surface sieving mechanism was dominant. A highly stable long-term flux for the 24 h filtration process was achieved, which can be attributed to the porous membrane surface with a special randomly-oriented CNTs network structure, featuring very high three-dimensional open porosity, allowing water to rapidly transport. The bacteria were only trapped on the CNTs network surface via surface filtration, without pore plugging, endowing the mullite-CNT membrane with unprecedentedly low fouling propensity to keep high flux with long-term operation time.
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Jeguirim M, Limousy L. Process engineering for pollution control and waste minimization. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9827-9830. [PMID: 28382441 DOI: 10.1007/s11356-017-8936-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 03/24/2017] [Indexed: 06/07/2023]
Affiliation(s)
- Mejdi Jeguirim
- Institut de Science des Matériaux de Mulhouse, 15 Rue Jean Starcky, 68057, Mulhouse, France.
| | - Lionel Limousy
- Institut de Science des Matériaux de Mulhouse, 15 Rue Jean Starcky, 68057, Mulhouse, France
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