Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles
Hybrid nanoparticles, composed of magnetic oxides and gold, have garnered significant interest due to their potential applications in various fields, including catalysis, diagnostics, and nanomedicine. In this study, the effect of reaction parameters on the reduction of HAuCl<sub>4</sub>...
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MDPI AG
2025-01-01
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| author | Diana Nemkova Svetlana Saikova Anton Krolikov |
| author_facet | Diana Nemkova Svetlana Saikova Anton Krolikov |
| author_sort | Diana Nemkova |
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| description | Hybrid nanoparticles, composed of magnetic oxides and gold, have garnered significant interest due to their potential applications in various fields, including catalysis, diagnostics, and nanomedicine. In this study, the effect of reaction parameters on the reduction of HAuCl<sub>4</sub> by different non-sulfur amino acids (glycine, L-serine, L-tryptophan, and L-tyrosine) was determined using the design of experiment (DOE) method. The results of the analysis of the regression equations were used to select the conditions and develop a methodology for the preparation of the hybrid magnetic NiFe<sub>2</sub>O<sub>4</sub>/Au nanoparticles (NPs) by direct reduction of gold on the magnetic surface using the aforementioned amino acids as the reducing and stabilizing agents simultaneously. The materials were characterized using XRD, TEM, XPS, and Vis/FTIR spectroscopy. The results indicate the successful synthesis of magnetic NiFe<sub>2</sub>O<sub>4</sub>/Au nanoparticles with all amino acids used, but the size of the gold crystals, their surface density, and the details of the NP structure (inlaid or a core–shell structure) depend on the amino acid used. The mechanism of the gold deposition on the magnetic core surface and the difference in the effect of various amino acids are discussed. The developed synthesis strategy can be extended to other metal ferrites and iron oxides. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-01-01 |
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| series | Crystals |
| spelling | doaj-art-b66d591c588b465582fa6a4cb25aa5192025-01-24T13:28:12ZengMDPI AGCrystals2073-43522025-01-011517210.3390/cryst15010072Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid NanoparticlesDiana Nemkova0Svetlana Saikova1Anton Krolikov2School of Non-Ferrous Metals, Siberian Federal University, Svobodny, 79, 660041 Krasnoyarsk, RussiaSchool of Non-Ferrous Metals, Siberian Federal University, Svobodny, 79, 660041 Krasnoyarsk, RussiaSchool of Non-Ferrous Metals, Siberian Federal University, Svobodny, 79, 660041 Krasnoyarsk, RussiaHybrid nanoparticles, composed of magnetic oxides and gold, have garnered significant interest due to their potential applications in various fields, including catalysis, diagnostics, and nanomedicine. In this study, the effect of reaction parameters on the reduction of HAuCl<sub>4</sub> by different non-sulfur amino acids (glycine, L-serine, L-tryptophan, and L-tyrosine) was determined using the design of experiment (DOE) method. The results of the analysis of the regression equations were used to select the conditions and develop a methodology for the preparation of the hybrid magnetic NiFe<sub>2</sub>O<sub>4</sub>/Au nanoparticles (NPs) by direct reduction of gold on the magnetic surface using the aforementioned amino acids as the reducing and stabilizing agents simultaneously. The materials were characterized using XRD, TEM, XPS, and Vis/FTIR spectroscopy. The results indicate the successful synthesis of magnetic NiFe<sub>2</sub>O<sub>4</sub>/Au nanoparticles with all amino acids used, but the size of the gold crystals, their surface density, and the details of the NP structure (inlaid or a core–shell structure) depend on the amino acid used. The mechanism of the gold deposition on the magnetic core surface and the difference in the effect of various amino acids are discussed. The developed synthesis strategy can be extended to other metal ferrites and iron oxides.https://www.mdpi.com/2073-4352/15/1/72nickel ferritenanoparticlescore–shellanion-exchange resin precipitationgoldhybrid nanoparticles |
| spellingShingle | Diana Nemkova Svetlana Saikova Anton Krolikov Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles Crystals nickel ferrite nanoparticles core–shell anion-exchange resin precipitation gold hybrid nanoparticles |
| title | Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles |
| title_full | Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles |
| title_fullStr | Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles |
| title_full_unstemmed | Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles |
| title_short | Effect of Amino Acids on the Synthesis of NiFe<sub>2</sub>O<sub>4</sub>/Au Hybrid Nanoparticles |
| title_sort | effect of amino acids on the synthesis of nife sub 2 sub o sub 4 sub au hybrid nanoparticles |
| topic | nickel ferrite nanoparticles core–shell anion-exchange resin precipitation gold hybrid nanoparticles |
| url | https://www.mdpi.com/2073-4352/15/1/72 |
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