Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties

Latha Kumari; W.Z Li; Charles H Vannoy; Roger M Leblanc; D.Z Wang

doi:10.1016/j.materresbull.2009.09.021

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Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties

Journal article

Peer reviewed

Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties

Latha Kumari, W.Z Li, Charles H Vannoy, Roger M Leblanc and D.Z Wang

Materials research bulletin, Vol.45(2), pp.190-196

2010

DOI: https://doi.org/10.1016/j.materresbull.2009.09.021

Abstract

B. Chemical synthesis

C. Electron microscopy

A. Optical properties

A. Nanostructures

C. X-ray diffraction

Zinc oxide (ZnO) spherical nanoparticles (SNPs) and bitter-melon-like (BML) microparticles were synthesized by a hydrothermal route using a zinc (Zn) plate as a source and substrate at various synthesis conditions. The structural analysis confirmed the formation of ZnO with hexagonal wurtzite phase on the hexagonal Zn substrate with growth of the ZnO microparticles along the [1 0 1] direction. The UV–vis absorption spectra of the ZnO microparticles indicated absorption peaks in the UV region which can be attributed to the band gap of ZnO. The room temperature photoluminescence (PL) of the ZnO microparticles exhibited a broad emission band, which is fitted with four Gaussian peaks and were assigned to transitions involving free excitons and various defect centers. The growth model for the formation of ZnO micro- and nanoparticles is presented.

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Collaboration types: Domestic collaboration
Citation topics: 2 Chemistry; 2.74 Photocatalysts; 2.74.16 ZnO
Web Of Science research areas: Materials Science, Multidisciplinary
ESI research areas: Materials Science

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Details

Title: Zinc oxide micro- and nanoparticles: Synthesis, structure and optical properties
Creators: Latha Kumari - Department of Physics, Florida International University, Miami, FL 33199, USA
W.Z Li - Department of Physics, Florida International University, Miami, FL 33199, USA
Charles H Vannoy - Department of Chemistry, University of Miami, Coral Gables, FL 33124, USA
Roger M Leblanc - Department of Chemistry, University of Miami, Coral Gables, FL 33124, USA
D.Z Wang - Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
Publication Details: Materials research bulletin, Vol.45(2), pp.190-196
Publisher: Elsevier Ltd
Academic Unit: Leadership Department; College of A&S; A&S - Chemistry
Language: English
Resource Type: Journal article
Record Identifier: 991031576208802976