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Synthesis of nano-crystalline Zn – CoO pigment by the chemical combustion method: Effect of fuel to oxidizer ratio on structure, microstructure and color properties

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Published/Copyright: May 14, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 102 Issue 12

Abstract

The aim of this study was to investigate the effect of fuel/oxidizer ratio on the combustion synthesis of nano-crystalline Zn – CoO green pigment. The fuel and oxidizer used in this study were glycine and nitrate respectively. Products were characterized by means of X-ray diffraction, Fourier transformation infra red spectroscopy, scanning electron microscopy and diffuse reflectance spectroscopy. X-ray diffraction patterns (XRD) showed that the formation of pure hexagonal ZnO phase was insensitive to fuel/oxidizer ratio variations. Well-crystalline single-phase ZnO was observed for low and stoichiometric fuel/oxidizer ratios. Average crystallite size determined from the Scherrer formula varied from 18 to 75 nm. The morphology of the obtained samples changed from hexagonal pyramidal to irregular porous sponge-like particles. The colorimetric results showed a broad reflectance band around 530 nm (green region) for all samples. The observation of green appearance of different samples synthesized using different fuel/oxidizer ratios was related to fade of Co3O4 X-ray diffraction patterns and entrance of Co into ZnO structure.

Keywords: Nano-crystalline; Combustion; Glycine; Zn – CoO; Green pigment
* Correspondence address Dr. Sousan Rasouli, Department of Nanomaterials and Nanocoatings, Institute for Color Science and Technology, 55 Vofamanesh Ave., Hossein Abad Square, Pasdaran St., 1668814811 Teheran, Iran, Tel.: (+98) 212 29 522 72, Fax: (+98) 212 29 475 37, E-mail:

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Received: 2009-12-25
Accepted: 2011-9-22
Published Online: 2013-05-14
Published in Print: 2011-12-01

© 2011, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110606
Keywords for this article
Nano-crystalline; Combustion; Glycine; Zn – CoO; Green pigment

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Influence of annealing on the mechanical anisotropy of hot pack rolled Ti-6Al-4V sheets
  5. Recovery and recrystallisation processes in plastically deformed WE43 alloy
  6. An investigation into the microstructure and weldability of a tantalum-containing cast cobalt-based superalloy
  7. Synchrotron measurement of the 3D shape of X-ray reflections from the γ/γ′-microstructure of nickel-base superalloys
  8. Semisolid microstructure of AM60B magnesium alloy refined by SiC particles
  9. The viscosity of eutectic Pd – Si alloys – a case study
  10. A simple hydrothermal route to bimodal mesoporous nanorod γ-alumina with high thermal stability
  11. Synthesis of nano-crystalline Zn – CoO pigment by the chemical combustion method: Effect of fuel to oxidizer ratio on structure, microstructure and color properties
  12. Nanobiotechnology approach to fabricate polycaprolactone nanofibers containing solid titanium nanoparticles as future implant materials
  13. Influence of ammonia concentration on the formation of hollow silica microspheres via polystyrene beads templating
  14. Synthesis and characterization of mesoporous silica using new gemini surfactants as templates in neutral pH conditions
  15. The use of ground silica sand, ground granulated blast furnace slag and ground basaltic pumice in cementitious adhesives for tiles
  16. Structural, optical and luminescence studies of ZnSe nanowires
  17. Study of single-walled carbon nanotube dielectrophoresis
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