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, cilt.67, ss.113-116, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 67
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.matlet.2011.08.098
  • Dergi Adı: MATERIALS LETTERS
  • Sayfa Sayısı: ss.113-116

Özet

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.