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Membrane Water Treatment Volume 6, Number 3, May 2015 , pages 251-262 DOI: https://doi.org/10.12989/mwt.2015.6.3.251 |
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Preparation and characterization of TiO2 membrane on porous 316 L stainless steel substrate with high mechanical strength |
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Fatemeh Mohamadi and Nader Parvin
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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 N2 - adsorption / desorption measurement (BET analyses)- It was revealed that a defect-free anatase membrane with a thickness of 1.6 μm 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 × 10-8 lit s-1 Pa-1 cm-1. | ||
| Key Words | ||
| titania membrane; stain- less steel substrate; single-gas permeation; sol-gel | ||
| Address | ||
| Department of Mining and Metallurgical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Street, Tehran, Iran. | ||
