Development of antibacterial magnetic clay-based nanocomposites for water treatment
Organoclays were prepared using Argentinean montmorillonite (Mt), hexadecyltrimethylammonium, or benzalkonium chloride at different concentrations. Surfactant incorporation, a key factor in biocide capacity, was estimated using interlayer space and thermogravimetric analysis (TGA). Subsequently, Fe...
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Académie des sciences
2024-03-01
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| Series: | Comptes Rendus. Chimie |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.243/ |
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| author | Horue, Manuel Barraqué, Facundo Montes, María Luciana Zelaya-Soulé, María Emilia Morantes, César Fernández Urruchua, Florencia Camila Correa, Hilda Edith Castro, Guillermo Raul Fernandez, Mariela Alejandra |
| author_facet | Horue, Manuel Barraqué, Facundo Montes, María Luciana Zelaya-Soulé, María Emilia Morantes, César Fernández Urruchua, Florencia Camila Correa, Hilda Edith Castro, Guillermo Raul Fernandez, Mariela Alejandra |
| author_sort | Horue, Manuel |
| collection | DOAJ |
| description | Organoclays were prepared using Argentinean montmorillonite (Mt), hexadecyltrimethylammonium, or benzalkonium chloride at different concentrations. Surfactant incorporation, a key factor in biocide capacity, was estimated using interlayer space and thermogravimetric analysis (TGA). Subsequently, Fe oxides were grown on the organoclays. Saturation magnetization indicated that all magnetic composites could respond to an external magnetic field. Inhibition experiments showed high antibacterial activity against Enterococcus faecium, Escherichia coli, and Salmonella typhimurium. The synthesized nanocomposites loaded with 150% CEC (cation exchange capacity) of hexadecyltrimethylammonium were the most effective. Those results were more precisely investigated using the viable plate count method. The magnetic materials had a similar antimicrobial effect to those without magnetic properties, indicating that Fe oxides can be nucleated to impart a magnetic response without affecting the biocide properties. The organoclays showed higher antibacterial activity against E. coli than against the other bacteria assayed. In addition, the agar disk-diffusion method revealed that antimicrobial agents were not released from clays, which is a relevant fact in the water treatment process. |
| format | Article |
| id | doaj-art-876edf2ff71742cbaa4854acd7402b33 |
| institution | Kabale University |
| issn | 1878-1543 |
| language | English |
| publishDate | 2024-03-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Chimie |
| spelling | doaj-art-876edf2ff71742cbaa4854acd7402b332025-02-07T13:39:46ZengAcadémie des sciencesComptes Rendus. Chimie1878-15432024-03-0127G171810.5802/crchim.24310.5802/crchim.243Development of antibacterial magnetic clay-based nanocomposites for water treatmentHorue, Manuel0https://orcid.org/0000-0002-4101-1967Barraqué, Facundo1https://orcid.org/0000-0002-4683-5527Montes, María Luciana2https://orcid.org/0000-0001-8702-9719Zelaya-Soulé, María Emilia3https://orcid.org/0000-0002-3737-0035Morantes, César Fernández4Urruchua, Florencia Camila5https://orcid.org/0009-0007-7157-9258Correa, Hilda Edith6Castro, Guillermo Raul7https://orcid.org/0000-0002-6187-7805Fernandez, Mariela Alejandra8https://orcid.org/0000-0001-6581-1996Centro de Investigación y Desarrollo en Fermentaciones Industriales (CINDEFI), Laboratorio de Nanobiomateriales, Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CONICET (CCT La Plata), Calle 47 y 115, B1900AJL La Plata, ArgentinaCETMIC, Camino Centenario y 506, B1897ZCA M. B. Gonnet, ArgentinaIFLP, Instituto de Física La Plata - CONICET CCT-La Plata, Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, ArgentinaINEDES - CONICET CCT Oca Centenario, Universidad Nacional de Luján, Luján, ArgentinaGrupo de Investigación en Tecnologías y Ambiente (GITA), Corporación Universitaria Autónoma del Cauca, Calle 5 No. 3-85, 190003, Popayán, ColombiaCETMIC, Camino Centenario y 506, B1897ZCA M. B. Gonnet, ArgentinaCETMIC, Camino Centenario y 506, B1897ZCA M. B. Gonnet, ArgentinaMax Planck Laboratory for Structural Biology, Chemistry and Molecular Biophysics of Rosario (MPLbioR, UNR-MPIbpC). Partner Laboratory of the Max Planck Institute for Biophysical Chemistry (MPIbpC, MPG). Centro de Estudios Interdisciplinarios (CEI), Universidad Nacional de Rosario, Maipú 1065, S2000 Rosario, Santa Fe, Argentina; Nanomedicine Research Unit (Nanomed), Center for Natural and Human Sciences (CCNH), Universidade Federal do ABC (UFABC), Santo André, SP, BrazilCETMIC, Camino Centenario y 506, B1897ZCA M. B. Gonnet, ArgentinaOrganoclays were prepared using Argentinean montmorillonite (Mt), hexadecyltrimethylammonium, or benzalkonium chloride at different concentrations. Surfactant incorporation, a key factor in biocide capacity, was estimated using interlayer space and thermogravimetric analysis (TGA). Subsequently, Fe oxides were grown on the organoclays. Saturation magnetization indicated that all magnetic composites could respond to an external magnetic field. Inhibition experiments showed high antibacterial activity against Enterococcus faecium, Escherichia coli, and Salmonella typhimurium. The synthesized nanocomposites loaded with 150% CEC (cation exchange capacity) of hexadecyltrimethylammonium were the most effective. Those results were more precisely investigated using the viable plate count method. The magnetic materials had a similar antimicrobial effect to those without magnetic properties, indicating that Fe oxides can be nucleated to impart a magnetic response without affecting the biocide properties. The organoclays showed higher antibacterial activity against E. coli than against the other bacteria assayed. In addition, the agar disk-diffusion method revealed that antimicrobial agents were not released from clays, which is a relevant fact in the water treatment process.https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.243/Magnetic-clay compositesAntibacterial materialsMontmorilloniteOrganoclaySurfactant |
| spellingShingle | Horue, Manuel Barraqué, Facundo Montes, María Luciana Zelaya-Soulé, María Emilia Morantes, César Fernández Urruchua, Florencia Camila Correa, Hilda Edith Castro, Guillermo Raul Fernandez, Mariela Alejandra Development of antibacterial magnetic clay-based nanocomposites for water treatment Comptes Rendus. Chimie Magnetic-clay composites Antibacterial materials Montmorillonite Organoclay Surfactant |
| title | Development of antibacterial magnetic clay-based nanocomposites for water treatment |
| title_full | Development of antibacterial magnetic clay-based nanocomposites for water treatment |
| title_fullStr | Development of antibacterial magnetic clay-based nanocomposites for water treatment |
| title_full_unstemmed | Development of antibacterial magnetic clay-based nanocomposites for water treatment |
| title_short | Development of antibacterial magnetic clay-based nanocomposites for water treatment |
| title_sort | development of antibacterial magnetic clay based nanocomposites for water treatment |
| topic | Magnetic-clay composites Antibacterial materials Montmorillonite Organoclay Surfactant |
| url | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.243/ |
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