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Effects of electrophoretic deposition parameters on the photocatalytic activity of TiO2 films: Optimization by response surface methodology

Mohammadi, M. M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.colsurfa.2014.03.048
  3. Abstract:
  4. In this work, the electrophoretic deposition method was utilized to immobilize TiO2 particles on stainless steel substrates. In addition, for the first time, statistics-based experimental design using response surface methodology was employed to investigate the effect of four key coating parameters (i.e. applied voltage, calcination temperature, photocatalyst weight percentage, and deposition time) on the photocatalytic degradation. Analysis of variance revealed that the proposed model was adequate. X-ray diffraction and scanning electron microscope were used to evaluate the effects of the parameters on degradation efficiency. The optimum applied voltage, calcination temperature, catalyst concentration and deposition time were found to be 25V, 300°C, 1.0wt%, and 300s, respectively. Under these conditions, the degradation efficiency reached 85.88%
  5. Keywords:
  6. Electrophoretic deposition ; Photocatalyst ; Response surface methodology ; Calcination ; Degradation ; Electrophoresis ; Optimization ; Photocatalysts ; Scanning electron microscopy ; Surface properties ; Titanium dioxide ; X ray diffraction ; Calcination temperature ; Catalyst concentration ; Electrophoretic deposition methods ; Electrophoretic depositions ; Photo catalytic degradation ; Photocatalytic activities ; Stainless steel substrates ; Deposition ; Methyl orange ; Oxygen ; Titanium ; Analysis of variance ; Chemical parameters ; Electric field ; Experimental design ; Film ; Independent variable ; Industrial waste ; Photocatalysis ; Priority journal ; Process optimization ; Response surface method ; Scanning electron microscope ; Surface property
  7. Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects ; Vol. 452, Issue. 1 , 2014 , pp. 1-8 ; ISSN: 09277757
  8. URL: http://www.sciencedirect.com/science/article/pii/S0927775714002866