Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures
Size and shape tuneable ZnO nanostructures were prepared by a low frequency ultrasound (42 kHz) route using various organic solvents as the reaction media. The crystalline nature, lattice parameters and microstructural parameters such as microstrain, stress and energy density of the prepared ZnO nan...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
Royal Society of Chemistry
2016
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| Materias: | |
| Acceso en línea: | http://eprints.uanl.mx/11597/1/C5RA27147A.pdf |
| _version_ | 1824413372216508416 |
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| author | Pandiyarajan, Thangaraj Mangalaraja, Ramalinga Viswanathan Karthikeyan, Balasubramanian Sepúlveda Guzmán, Selene Mansilla, Héctor D. Contreras, David Escalona, Néstor Gracia Pinilla, Miguel Ángel |
| author_facet | Pandiyarajan, Thangaraj Mangalaraja, Ramalinga Viswanathan Karthikeyan, Balasubramanian Sepúlveda Guzmán, Selene Mansilla, Héctor D. Contreras, David Escalona, Néstor Gracia Pinilla, Miguel Ángel |
| author_sort | Pandiyarajan, Thangaraj |
| collection | Repositorio Institucional |
| description | Size and shape tuneable ZnO nanostructures were prepared by a low frequency ultrasound (42 kHz) route using various organic solvents as the reaction media. The crystalline nature, lattice parameters and microstructural parameters such as microstrain, stress and energy density of the prepared ZnO nanostructures were revealed through X-ray diffraction (XRD) analysis. The organic solvents influenced the size and morphology of the ZnO nanostructures, and interesting morphological changes involving a spherical to triangular shaped transition were observed. The visible emission properties and lattice vibrational characteristics of the nanostructures were drastically modified by the changes in size and shape. Raman spectral measurements revealed the presence of multiphonon processes in the ZnO
nanostructures. The intensity of the visible emission band was found to vary with the size and morphology of the structures. The strongest visible emission band corresponded to the structure with the largest surface/volume ratio and could be attributed to surface oxygen vacancies. The control over the size and morphology of ZnO nanostructures has been presented as a means of determining the intensity of the visible emission band |
| format | Article |
| id | eprints-11597 |
| institution | UANL |
| language | English |
| publishDate | 2016 |
| publisher | Royal Society of Chemistry |
| record_format | eprints |
| spelling | eprints-115972017-01-16T15:11:47Z http://eprints.uanl.mx/11597/ Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures Pandiyarajan, Thangaraj Mangalaraja, Ramalinga Viswanathan Karthikeyan, Balasubramanian Sepúlveda Guzmán, Selene Mansilla, Héctor D. Contreras, David Escalona, Néstor Gracia Pinilla, Miguel Ángel QD Química Size and shape tuneable ZnO nanostructures were prepared by a low frequency ultrasound (42 kHz) route using various organic solvents as the reaction media. The crystalline nature, lattice parameters and microstructural parameters such as microstrain, stress and energy density of the prepared ZnO nanostructures were revealed through X-ray diffraction (XRD) analysis. The organic solvents influenced the size and morphology of the ZnO nanostructures, and interesting morphological changes involving a spherical to triangular shaped transition were observed. The visible emission properties and lattice vibrational characteristics of the nanostructures were drastically modified by the changes in size and shape. Raman spectral measurements revealed the presence of multiphonon processes in the ZnO nanostructures. The intensity of the visible emission band was found to vary with the size and morphology of the structures. The strongest visible emission band corresponded to the structure with the largest surface/volume ratio and could be attributed to surface oxygen vacancies. The control over the size and morphology of ZnO nanostructures has been presented as a means of determining the intensity of the visible emission band Royal Society of Chemistry 2016 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/11597/1/C5RA27147A.pdf http://eprints.uanl.mx/11597/1.haspreviewThumbnailVersion/C5RA27147A.pdf Pandiyarajan, Thangaraj y Mangalaraja, Ramalinga Viswanathan y Karthikeyan, Balasubramanian y Sepúlveda Guzmán, Selene y Mansilla, Héctor D. y Contreras, David y Escalona, Néstor y Gracia Pinilla, Miguel Ángel (2016) Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures. RSC advances, 6 (24). pp. 20437-20446. ISSN 2046-2069 http://doi.org/10.1039/C5RA27147A 10.1039/C5RA27147A |
| spellingShingle | QD Química Pandiyarajan, Thangaraj Mangalaraja, Ramalinga Viswanathan Karthikeyan, Balasubramanian Sepúlveda Guzmán, Selene Mansilla, Héctor D. Contreras, David Escalona, Néstor Gracia Pinilla, Miguel Ángel Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| title_full | Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| title_fullStr | Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| title_full_unstemmed | Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| title_short | Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures |
| title_sort | microstructure vibrational and visible emission properties of low frequency ultrasound 42 khz assisted zno nanostructures |
| topic | QD Química |
| url | http://eprints.uanl.mx/11597/1/C5RA27147A.pdf |
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