Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles
The water oxidation of bimetallic Al/Ag nanoparticles has been shown to yield nanoscale structures whose morphology, phase composition and textural characteristics are determined by the synthesis conditions. Flower-like nanoscale structures with silver nanoparticles, with an average size of 17 nm, a...
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MDPI AG
2022-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/21/3888 |
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| author | Sergey O. Kazantsev Olga V. Bakina Aleksandr V. Pervikov Nikolay G. Rodkevich Nguyen Hong Quang Lan Anh Le Thi Sergei S. Timofeev Aleksandr S. Lozhkomoev |
| author_facet | Sergey O. Kazantsev Olga V. Bakina Aleksandr V. Pervikov Nikolay G. Rodkevich Nguyen Hong Quang Lan Anh Le Thi Sergei S. Timofeev Aleksandr S. Lozhkomoev |
| author_sort | Sergey O. Kazantsev |
| collection | DOAJ |
| description | The water oxidation of bimetallic Al/Ag nanoparticles has been shown to yield nanoscale structures whose morphology, phase composition and textural characteristics are determined by the synthesis conditions. Flower-like nanoscale structures with silver nanoparticles, with an average size of 17 nm, are formed in water at 60 °C. Under hydrothermal conditions at temperatures of 200 °C and a pressure of 16 MPa, boehmite nanoplatelets with silver nanoparticles, with an average size of 22 nm, are formed. The oxidation of Al/Ag nanoparticles using humid air at 60 °C and 80% relative humidity results in the formation of rod-shaped bayerite nanoparticles and Ag nanoparticles with an average size of 19 nm. The thermal treatment of nanoscale structures obtained at a temperature of 500 °C has been shown to lead to a phase transition into γ-Al<sub>2</sub>O<sub>3</sub>, while maintaining the original morphology, and to a decrease in the average size of the silver nanoparticles to 12 nm and their migration to the surface of nanoscale structures. The migration of silver to the nanoparticle surface influences the formation of a double electric layer of particles, and leads to a shift in the pH of the zero-charge point by approximately one, with the nanostructures acquiring pronounced antimicrobial properties. |
| first_indexed | 2024-03-09T18:47:04Z |
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| id | doaj.art-7d46a6826f1a40dc9c781457110ca32c |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:47:04Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-7d46a6826f1a40dc9c781457110ca32c2023-11-24T06:10:49ZengMDPI AGNanomaterials2079-49912022-11-011221388810.3390/nano12213888Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag NanoparticlesSergey O. Kazantsev0Olga V. Bakina1Aleksandr V. Pervikov2Nikolay G. Rodkevich3Nguyen Hong Quang4Lan Anh Le Thi5Sergei S. Timofeev6Aleksandr S. Lozhkomoev7Laboratory of Nanobioengineering, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaLaboratory of Nanobioengineering, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaLaboratory of Physical Chemistry of Ultrafine Materials, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaLaboratory of Physical Chemistry of Ultrafine Materials, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaLaboratory Military Medicine and Adaptation, Vietnam-Russia Tropical Center, Institute of Bio-Medicine, Ngia Do, Kau Zai, St. Nguyen Van Huen, 63, Hanoi 11307, VietnamLaboratory of Toxicity and Tropical Diseases, Vietnam-Russia Tropical Center, Institute of Bio-Medicine, Ngia Do, Kau Zai, St. Nguyen Van Huen, 63, Hanoi 11307, VietnamLaboratory of Physical Chemistry of Ultrafine Materials, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaLaboratory of Nanobioengineering, Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Pr. Akademicheskii 2/4, 634055 Tomsk, RussiaThe water oxidation of bimetallic Al/Ag nanoparticles has been shown to yield nanoscale structures whose morphology, phase composition and textural characteristics are determined by the synthesis conditions. Flower-like nanoscale structures with silver nanoparticles, with an average size of 17 nm, are formed in water at 60 °C. Under hydrothermal conditions at temperatures of 200 °C and a pressure of 16 MPa, boehmite nanoplatelets with silver nanoparticles, with an average size of 22 nm, are formed. The oxidation of Al/Ag nanoparticles using humid air at 60 °C and 80% relative humidity results in the formation of rod-shaped bayerite nanoparticles and Ag nanoparticles with an average size of 19 nm. The thermal treatment of nanoscale structures obtained at a temperature of 500 °C has been shown to lead to a phase transition into γ-Al<sub>2</sub>O<sub>3</sub>, while maintaining the original morphology, and to a decrease in the average size of the silver nanoparticles to 12 nm and their migration to the surface of nanoscale structures. The migration of silver to the nanoparticle surface influences the formation of a double electric layer of particles, and leads to a shift in the pH of the zero-charge point by approximately one, with the nanostructures acquiring pronounced antimicrobial properties.https://www.mdpi.com/2079-4991/12/21/3888aluminumbimetallic nanoparticlessilveroxidationaluminaboehmite |
| spellingShingle | Sergey O. Kazantsev Olga V. Bakina Aleksandr V. Pervikov Nikolay G. Rodkevich Nguyen Hong Quang Lan Anh Le Thi Sergei S. Timofeev Aleksandr S. Lozhkomoev Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles Nanomaterials aluminum bimetallic nanoparticles silver oxidation alumina boehmite |
| title | Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles |
| title_full | Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles |
| title_fullStr | Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles |
| title_full_unstemmed | Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles |
| title_short | Antimicrobial Activity and Sorption Behavior of Al<sub>2</sub>O<sub>3</sub>/Ag Nanocomposites Produced with the Water Oxidation of Bimetallic Al/Ag Nanoparticles |
| title_sort | antimicrobial activity and sorption behavior of al sub 2 sub o sub 3 sub ag nanocomposites produced with the water oxidation of bimetallic al ag nanoparticles |
| topic | aluminum bimetallic nanoparticles silver oxidation alumina boehmite |
| url | https://www.mdpi.com/2079-4991/12/21/3888 |
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