Electrophoretic deposition of hydrothermally synthesised Ag-TiO2 hybrid nanoparticles onto 3-D Ni filters

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Noberi C., Zaman A. C., Üstündağ C. B., Kaya F., Kaya C.

MATERIALS LETTERS, vol.67, pp.113-116, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67
  • Publication Date: 2012
  • Doi Number: 10.1016/j.matlet.2011.08.098
  • Journal Name: MATERIALS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.113-116
  • Yıldız Technical University Affiliated: Yes

Abstract

Ag-TiO2 hybrid nano-powders were synthesised by hydrothermal method(HS) at 180 degrees C for 2 h. TEM and AFM analyses have shown that Ag nanoparticles embedded within the coarser TiO2 particles have a spherical shape with a diameter of 7 nm whilst the size of the TiO2 nanoparticles is found to be around 40 nm. It is also shown that the calcined (500 degrees C for 1 h) hybrid composite particles result in the formation of anatase TiO2. The synthesised Ag-TiO2 nanopowders were dispersed in ethanol to obtain stable colloidal suspensions and used to coat Ni-based filters using electrophoretic deposition (EPD) using an applied voltage of 30 V for 2 min. Overall, it is shown that hydrothermal processing is an effective way of synthesising nano-sized Ag-TiO2 hybrid powders in a short time and EPD is a good way to get full coating onto 3-D Ni-based filters if stable suspensions are used. (C) 2011 Elsevier B.V. All rights reserved.