Characterization and Photocatalytic Efficiency of TiO2/Ti Beads Fabricated by Simple Heat-Treatment

J Mater Sci Technol ›› 2012, Vol. 28 ›› Issue (2): 184-192.

Characterization and Photocatalytic Efficiency of TiO₂/Ti Beads Fabricated by Simple Heat-Treatment

Altangerel Amarjargal^1,2), Leonard D. Tijing^3,4), Mi-Hwa Yu¹⁾, Chae-Hwa Kim¹⁾, Chan-Hee Park¹⁾, Dong-Won Kim⁴⁾, Cheol-Sang Kim^1,3)

1) Department of Bionanosystem Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea
2) Power Engineering School, Mongolian University of Science and Technology, Ulaanbaatar, Mongolia
3) Division of Mechanical Design Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea
4) Department of Industrial and Information Systems Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea

Received:2011-07-19 Revised:2011-12-05 Online:2012-02-28 Published:2012-02-24
Contact: Cheol-Sang Kim
Supported by:
the National Research Foundation (NRF) of Korea funded by the Korean Ministry of Education, Science and Technology (MEST) (Water Treatment Project No. 2011-0011807)

Abstract

Abstract: The goal of the present study was to investigate the photocatalytic efficiency of titanium dioxide (TiO₂) formed on titanium (Ti) bead substrate (referred herein as TiO₂/Ti beads) by heat treatment when exposing to ultraviolet (UV) light irradiation. Escherichia coli was used as the model test organism. The results show 4-log and 7-log decrease in bacterial concentration after a test time of 15 and 120 min, respectively, using TiO₂/Ti beads irradiated with UV light in a tin-foil covered beaker. This article presents the potential of TiO₂ on Ti bead substrate formed by simple heat-treatment together with UV light for bacterial inactivation.

Key words: Photocatalysis, Titanium dioxide, Bacterial inactivation, Heat treatment, Escherichia coli

Altangerel Amarjargal, Leonard D. Tijing, Mi-Hwa Yu, Chae-Hwa Kim, Chan-Hee Park, Dong-Won Kim, Cheol-Sang Kim. Characterization and Photocatalytic Efficiency of TiO₂/Ti Beads Fabricated by Simple Heat-Treatment[J]. J Mater Sci Technol, 2012, 28(2): 184-192.

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Characterization and Photocatalytic Efficiency of TiO₂/Ti Beads Fabricated by Simple Heat-Treatment

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