Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles
Tin oxide (SnO2) nanoparticles were synthesized via a facile chemical precipitation route using tin chloride (SnCl2•2H2O) as precursor and ammonia as precipitant. The as-synthesized nanoparticles were subjected to post-calcination at 300°C, 400°C and 500°C and thoroughly characterized by advanced te...
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| Format: | Article |
| Language: | English |
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University of Technology, Baghdad
2023-10-01
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| Series: | Journal of Applied Sciences and Nanotechnology |
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| Online Access: | https://jasn.uotechnology.edu.iq/article_24032_15fb82e161cf214b738c20b3e8f43269.pdf |
| _version_ | 1797398700779110400 |
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| author | Shatha Batros Mohammed Ali Ali Addie |
| author_facet | Shatha Batros Mohammed Ali Ali Addie |
| author_sort | Shatha Batros |
| collection | DOAJ |
| description | Tin oxide (SnO2) nanoparticles were synthesized via a facile chemical precipitation route using tin chloride (SnCl2•2H2O) as precursor and ammonia as precipitant. The as-synthesized nanoparticles were subjected to post-calcination at 300°C, 400°C and 500°C and thoroughly characterized by advanced techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS) and Fourier transform infrared (FTIR) spectroscopy. XRD patterns revealed the formation of tetragonal SnO2 crystalline phase with average crystallite sizes of 11.9 nm, 13.9 nm and 17.2 nm for the samples calcined at 300°C, 400°C and 500°C respectively. SEM micrographs demonstrated agglomerated and irregular morphology of the calcined SnO2 nanoparticles. FTIR spectra confirmed the presence of characteristic Sn-O and O-Sn-O vibrational modes in the calcined SnO2 samples. The antibacterial activity of the synthesized nanoparticles was evaluated against model Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacterial strains by standard zone of inhibition assays. Remarkably, the SnO2 nanoparticles exhibited excellent antibacterial activity due to their high specific surface area. A systematic increase in the inhibition zone diameter was observed with decrease in crystallite size of SnO2 for both bacterial strains, suggesting an inverse relationship between crystallite size and antibacterial behavior. The present work demonstrates a simple, eco-friendly synthesis of antibacterial SnO2 nanoparticles with controlled crystallite size by tuning the calcination temperature. |
| first_indexed | 2024-03-09T01:29:17Z |
| format | Article |
| id | doaj.art-556d645acd6b43999eb647e082123683 |
| institution | Directory Open Access Journal |
| issn | 2788-6867 |
| language | English |
| last_indexed | 2024-03-09T01:29:17Z |
| publishDate | 2023-10-01 |
| publisher | University of Technology, Baghdad |
| record_format | Article |
| series | Journal of Applied Sciences and Nanotechnology |
| spelling | doaj.art-556d645acd6b43999eb647e0821236832023-12-10T05:34:16ZengUniversity of Technology, BaghdadJournal of Applied Sciences and Nanotechnology2788-68672023-10-0134203210.53293/jasn.2023.7107.124624032Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 NanoparticlesShatha Batros0Mohammed Ali1Ali Addie2Center of Advanced Materials, Materials Research Directorate, Ministry of Science and Technology – IraqCenter of Advanced Materials, Materials Research Directorate, Ministry of Science and Technology – IraqCenter of Advanced Materials, Materials Research Directorate, Ministry of Science and Technology – IraqTin oxide (SnO2) nanoparticles were synthesized via a facile chemical precipitation route using tin chloride (SnCl2•2H2O) as precursor and ammonia as precipitant. The as-synthesized nanoparticles were subjected to post-calcination at 300°C, 400°C and 500°C and thoroughly characterized by advanced techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive x-ray spectroscopy (EDS) and Fourier transform infrared (FTIR) spectroscopy. XRD patterns revealed the formation of tetragonal SnO2 crystalline phase with average crystallite sizes of 11.9 nm, 13.9 nm and 17.2 nm for the samples calcined at 300°C, 400°C and 500°C respectively. SEM micrographs demonstrated agglomerated and irregular morphology of the calcined SnO2 nanoparticles. FTIR spectra confirmed the presence of characteristic Sn-O and O-Sn-O vibrational modes in the calcined SnO2 samples. The antibacterial activity of the synthesized nanoparticles was evaluated against model Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacterial strains by standard zone of inhibition assays. Remarkably, the SnO2 nanoparticles exhibited excellent antibacterial activity due to their high specific surface area. A systematic increase in the inhibition zone diameter was observed with decrease in crystallite size of SnO2 for both bacterial strains, suggesting an inverse relationship between crystallite size and antibacterial behavior. The present work demonstrates a simple, eco-friendly synthesis of antibacterial SnO2 nanoparticles with controlled crystallite size by tuning the calcination temperature.https://jasn.uotechnology.edu.iq/article_24032_15fb82e161cf214b738c20b3e8f43269.pdftin oxide nanoparticlesantibacterial activitychemical precipitationcrystallite size control |
| spellingShingle | Shatha Batros Mohammed Ali Ali Addie Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles Journal of Applied Sciences and Nanotechnology tin oxide nanoparticles antibacterial activity chemical precipitation crystallite size control |
| title | Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles |
| title_full | Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles |
| title_fullStr | Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles |
| title_full_unstemmed | Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles |
| title_short | Microstructure-Modulated Antibacterial Performance of Chemically Precipitated SnO2 Nanoparticles |
| title_sort | microstructure modulated antibacterial performance of chemically precipitated sno2 nanoparticles |
| topic | tin oxide nanoparticles antibacterial activity chemical precipitation crystallite size control |
| url | https://jasn.uotechnology.edu.iq/article_24032_15fb82e161cf214b738c20b3e8f43269.pdf |
| work_keys_str_mv | AT shathabatros microstructuremodulatedantibacterialperformanceofchemicallyprecipitatedsno2nanoparticles AT mohammedali microstructuremodulatedantibacterialperformanceofchemicallyprecipitatedsno2nanoparticles AT aliaddie microstructuremodulatedantibacterialperformanceofchemicallyprecipitatedsno2nanoparticles |