Paper Title:
Template-Free Microwave-Assisted Preparation of ZnO Spherical Microcrystals
  Abstract

Large-scaled and monodispersed ZnO nanospheres have been synthesized successfully using zinc nitrate hexhydrate and triethanolamine (TEA) aqueous solutions as precursors through a facile one-pot microwave-assisted process in the absence of any template. The as-prepared products were characterized by XRD, EDX, FESEM, TEM, HRTEM and PL. The results reveal that solid ZnO nanospheres possess a hexagonal wurtzite structure with diameters of 240-440 nm, which are self-assembled by single-crystal polygonal nanoflakes with 20-30 nm in side lengths. Room temperature photoluminescence (PL) spectrum shows a strong ultraviolet (UV) emission around 387 nm and a broad green band at the center of 530 nm. The possible formation mechanism was also investigated.

  Info
Periodical
Materials Science Forum (Volumes 663-665)
Edited by
Yuan Ming Huang
Pages
986-989
DOI
10.4028/www.scientific.net/MSF.663-665.986
Citation
C. H. Deng, H. M. Hu, G. Q. Shao, "Template-Free Microwave-Assisted Preparation of ZnO Spherical Microcrystals", Materials Science Forum, Vols. 663-665, pp. 986-989, 2011
Online since
November 2010
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Price
$32.00
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