Microstructure, vibrational and visible emission properties of low frequency ultrasound (42 kHz) assisted ZnO nanostructures

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

[img]
Vista previa
Texto
C5RA27147A.pdf - Versión Publicada
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB) | Vista previa
URL o página oficial: http://doi.org/10.1039/C5RA27147A

Resumen

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

Tipo de elemento: Article
Materias: Q Ciencia > QD Química
Divisiones: Ciencias Físico Matemáticas
Usuario depositante: Dr. Miguel Ángel Gracia-Pinilla
Creadores:
CreadorEmailORCID
Pandiyarajan, ThangarajNO ESPECIFICADONO ESPECIFICADO
Mangalaraja, Ramalinga ViswanathanNO ESPECIFICADONO ESPECIFICADO
Karthikeyan, BalasubramanianNO ESPECIFICADONO ESPECIFICADO
Sepúlveda Guzmán, SeleneNO ESPECIFICADONO ESPECIFICADO
Mansilla, Héctor D.NO ESPECIFICADONO ESPECIFICADO
Contreras, DavidNO ESPECIFICADONO ESPECIFICADO
Escalona, NéstorNO ESPECIFICADONO ESPECIFICADO
Gracia Pinilla, Miguel Ángelmiguelchem@gmail.comNO ESPECIFICADO
Fecha del depósito: 01 Nov 2016 21:25
Última modificación: 16 Ene 2017 15:11
URI: http://eprints.uanl.mx/id/eprint/11597

Actions (login required)

Ver elemento Ver elemento

Downloads

Downloads per month over past year