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Co-deposition and electrokinetic behavior of TiO2–WO3 nanoparticles under non-uniform AC field

  • Mahsa Navidirad , Babak Raissi , Reza Riahifar , Maziar Sahba Yaghmaee , Fatemeh Taati Asil and Asghar Kazemzadeh
Published/Copyright: August 7, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 8

Abstract

The electrokinetic behavior of TiO2–WO3 nanoparticles while applying non-uniform AC electric fields at a frequency of 10 kHz was investigated using planar parallel electrodes. For this purpose, WO3 and TiO2 nanoparticles, which exhibited a different response to the applied electric field, were deposited simultaneously at 10 kHz. Characterization of the obtained patterns by optical and scanning electron microscopy revealed that the TiO2 nanoparticles, which were unable to enter the gap, moved toward it and got deposited there in the presence of WO3 nanoparticles. Hence, a composite layer consisting of TiO2 and WO3 nanoparticles was formed in the gap. A hypothesis for the change in the deposition and electric behavior of TiO2 nanoparticles is presented in this paper using the multi-shell model. Furthermore, a possible method for the fabrication of a TiO2–WO3based gas sensor has been provided.

Keywords: AC electrophoresis; Concentric multi-shell; TiO2 nanoparticles; WO3 nanoparticles; Dielectrophoresis
∗Correspondence address, Reza Riahifar, Battery and Sensor Group, Materials and Energy Research Center, Emam Khomeini Blvd, Meshkin Dasht, P.O. Box 14155-4777, Tehran, Iran, Tel: +98 26 3628 0040, Fax: +98 26 3620 1888, e-mail: , Web: http://portal.merc.ac.ir/en/About-MERC.aspx

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Received: 2018-10-05
Accepted: 2019-03-05
Published Online: 2019-08-07
Published in Print: 2019-08-12

© 2019, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111798
Keywords for this article
AC electrophoresis; Concentric multi-shell; TiO2 nanoparticles; WO3 nanoparticles; Dielectrophoresis

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Dendritic solidification of highly undercooled dilute alloys
  5. Dendritic structure formation of magnesium alloys for the manipulation of corrosion properties: Part 2 – corrosion
  6. Thermodynamic properties of cerium molybdate
  7. A new approach to reduce springback in sheet metal bending using digital image correlation
  8. Effects of minor La and Ce additions on microstructure and mechanical properties of A201 alloy
  9. Strengthening and toughening of laminated TiAl composite sheets by titanium alloy layers and carbide particles
  10. A fractal analysis for the microstructures of β-SiC films
  11. Synthesis of La2(Zr0.7Ce0.3)2O7 nanopowder using a simple chemical precipitation method and heat treatment at high temperature
  12. Optimized microstructure with alumina micropowder and its effects on properties of phosphate-bonded castables
  13. Co-deposition and electrokinetic behavior of TiO2–WO3 nanoparticles under non-uniform AC field
  14. 3D nanoflower-structured TiO2 photoanode for efficient photoelectrochemical water splitting
  15. Short Communications
  16. Investigation of Al2O3/TiB2 ceramic cutting tool materials with the addition of core–shell structured Ni–B coated CaF2
  17. DGM News
  18. DGM News
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