The nanocrystallinity enhancement and optical characteristics of pre-hydrothermally treated ZnO nanoparticles

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Abstract

In the current research, ZnO nanoparticles have been synthesized via sol-gel technique assisted by a pre-hydrothermal treatment at 150oC with various holding time of 0, 24, 48 and 72 hours. This route was specifically aimed at investigating the effect of this treatment on the nanocrystallite size, crystallinity and band gap energy of the resulting nanoparticles. The results of investigation showed that an increasing of pre-hydrothermal treatment duration from 0 to 72 hours has increased the crystallite size of ZnO nanoparticles from 3.47 to 13.85 nm, and decreased the band gap energy from 3.10 to 3.08 eV.

Original languageEnglish
Title of host publicationAdvanced Materials and Processes II
Pages468-471
Number of pages4
DOIs
Publication statusPublished - 15 Oct 2012
Event2nd International Conference on Chemical Engineering and Advanced Materials, CEAM 2012 - Guangzhou, China
Duration: 13 Jul 201215 Jul 2012

Publication series

NameAdvanced Materials Research
Volume557-559
ISSN (Print)1022-6680

Conference

Conference2nd International Conference on Chemical Engineering and Advanced Materials, CEAM 2012
CountryChina
CityGuangzhou
Period13/07/1215/07/12

Keywords

  • Band gap energy
  • Enhanced nanocrystallinity
  • Optical absorbance
  • Pre-hydrothermal treatment
  • ZnO nanoparticles

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