Membrane and Water Treatment

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Preparation and characterization of TiO2 membrane on porous 316 L stainless steel substrate with high mechanical strength

  • Mohamadi, Fatemeh (Department of Mining and Metallurgical Engineering, Amirkabir University of Technology(Tehran Polytechnic)) ;
  • Parvin, Nader (Department of Mining and Metallurgical Engineering, Amirkabir University of Technology(Tehran Polytechnic))
  • Received : 2014.08.27
  • Accepted : 2015.03.04
  • Published : 2015.05.25
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Abstract

In this work the preparation and characterization of a membrane containing a uniform mesoporous Titanium oxide top layer on a porous stainless steel substrate has been studied. The 316 L stainless steel substrate was prepared by powder metallurgy technique and modified by soaking-rolling and fast drying method. The mesoporous titania membrane was fabricated via the sol-gel method. Morphological studies were performed on both supported and unsupported membranes using scanning electron microscope (SEM) and field emission scanning microscope (FESEM). The membranes were also characterized using X-ray diffraction (XRD) and $N_2$-adsorption / desorption measurement (BET analyses). It was revealed that a defect-free anatase membrane with a thickness of $1.6{\mu}m$ and 4.3 nm average pore size can be produced. In order to evaluate the performance of the supported membrane, single-gas permeation experiments were carried out at room temperature with nitrogen gas. The permeability coefficient of the fabricated membrane was $4{\times}10^{-8}\;lit\;s^{-1}\;Pa^{-1}\;cm^{-1}$.

Keywords

Acknowledgement

Supported by : Iran National Science Foundation (INSF)

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