Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles
This article reports the controlled size of ZnO nanoparticles synthesized via simple aqueous chemical route without the involvement of any capping agent. The effect of different calcination temperatures on the size of the ZnO nanoparticles was investigated. X-ray diffraction (XRD) results indicated...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-10-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785414000696 |
| _version_ | 1818852735721668608 |
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| author | Mohammad Ramzan Parra Fozia Z. Haque |
| author_facet | Mohammad Ramzan Parra Fozia Z. Haque |
| author_sort | Mohammad Ramzan Parra |
| collection | DOAJ |
| description | This article reports the controlled size of ZnO nanoparticles synthesized via simple aqueous chemical route without the involvement of any capping agent. The effect of different calcination temperatures on the size of the ZnO nanoparticles was investigated. X-ray diffraction (XRD) results indicated that all the samples have crystalline wurtzite phase, and peak broadening analysis was used to evaluate the average crystallite size and lattice strain using Scherrer's equation and Williamson–Hall (W–H) method. Morphology and elemental compositions were investigated using atomic force microscopy (AFM) and scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) spectroscopy. The average crystallite size of ZnO nanoparticles estimated from Scherrer's formula and W–H analysis was found to increase with the increase in calcination temperature. These results were in good agreement with AFM results. Optical properties were investigated using UV–vis spectroscopy in diffused reflectance (DR) mode, with a sharp increase in reflectivity at 375 nm and the material has a strong reflective characteristic after 420 nm at 500 °C calcination temperature. Furthermore, photoluminescence spectroscopic results revealed intensive ultraviolet (UV) emission with reduced defect concentrations and a slight shifting in band gap energies with increased calcination temperature from 200 °C to 500 °C. This study suggests that the as-prepared ZnO nanoparticles with bandgap tunability might be utilized as window layer in optoelectronic devices. |
| first_indexed | 2024-12-19T07:25:39Z |
| format | Article |
| id | doaj.art-6b8d3a3d31564d71a8d650338cf2f411 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-19T07:25:39Z |
| publishDate | 2014-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6b8d3a3d31564d71a8d650338cf2f4112022-12-21T20:30:50ZengElsevierJournal of Materials Research and Technology2238-78542014-10-013436336910.1016/j.jmrt.2014.07.001Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticlesMohammad Ramzan ParraFozia Z. HaqueThis article reports the controlled size of ZnO nanoparticles synthesized via simple aqueous chemical route without the involvement of any capping agent. The effect of different calcination temperatures on the size of the ZnO nanoparticles was investigated. X-ray diffraction (XRD) results indicated that all the samples have crystalline wurtzite phase, and peak broadening analysis was used to evaluate the average crystallite size and lattice strain using Scherrer's equation and Williamson–Hall (W–H) method. Morphology and elemental compositions were investigated using atomic force microscopy (AFM) and scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) spectroscopy. The average crystallite size of ZnO nanoparticles estimated from Scherrer's formula and W–H analysis was found to increase with the increase in calcination temperature. These results were in good agreement with AFM results. Optical properties were investigated using UV–vis spectroscopy in diffused reflectance (DR) mode, with a sharp increase in reflectivity at 375 nm and the material has a strong reflective characteristic after 420 nm at 500 °C calcination temperature. Furthermore, photoluminescence spectroscopic results revealed intensive ultraviolet (UV) emission with reduced defect concentrations and a slight shifting in band gap energies with increased calcination temperature from 200 °C to 500 °C. This study suggests that the as-prepared ZnO nanoparticles with bandgap tunability might be utilized as window layer in optoelectronic devices.http://www.sciencedirect.com/science/article/pii/S2238785414000696ZnO nanoparticlesAqueous chemical routeAverage crystallite sizeScherrer's equationWilliamson–Hall method |
| spellingShingle | Mohammad Ramzan Parra Fozia Z. Haque Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles Journal of Materials Research and Technology ZnO nanoparticles Aqueous chemical route Average crystallite size Scherrer's equation Williamson–Hall method |
| title | Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles |
| title_full | Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles |
| title_fullStr | Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles |
| title_full_unstemmed | Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles |
| title_short | Aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of ZnO nanoparticles |
| title_sort | aqueous chemical route synthesis and the effect of calcination temperature on the structural and optical properties of zno nanoparticles |
| topic | ZnO nanoparticles Aqueous chemical route Average crystallite size Scherrer's equation Williamson–Hall method |
| url | http://www.sciencedirect.com/science/article/pii/S2238785414000696 |
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