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Citation: ZHANG Zuyun, LIU Yuan, JIANG Caiyun, WANG Yuping. Photoelectrocatalytic Removal of Bacteria in Simulated Ballast Water Using Bi_xTiO_y-TiO₂ Composite Film Electrode[J]. Chinese Journal of Applied Chemistry, ;2014, 31(5): 600-606. doi: 10.3724/SP.J.1095.2014.30379 shu

Photoelectrocatalytic Removal of Bacteria in Simulated Ballast Water Using Bi_xTiO_y-TiO₂ Composite Film Electrode

ZHANG Zuyun ^a ,
LIU Yuan ^a ,
JIANG Caiyun ^b ,
WANG Yuping ^a,c,,

1.
a School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China;
2.
b Department of Engineering and Technology, Jiangsu Institute of Economic and Trade Technology, Nanjing 210007, China;
3.
c Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse(Nanjing University of Science and Technology), Nanjing 210093, China

Corresponding author: WANG Yuping,
Received Date: 26 July 2013
Available Online: 9 September 2013
Fund Project: 国家自然科学基金资助项目(51278253) (51278253)中央高校基本科研业务费专项资金(30920130122007) (30920130122007)江苏省环保科技专项基金(2013002) (2013002)

The Bi_xTiO_y-TiO₂ composite film electrode was prepared using solvent thermal and adhesion method with polyvinyl alcohol.The as-prepared Bi_xTiO_y-TiO₂ and film electrode were characterized by XRD,UV-Vis,photoluminescence(PL),SEM,and EDS.The bacteria in simulated ballast water was removed by photoelectrocatalysis.The effects of impressed voltage,light source and number of use of electrode on the disinfection efficiency of photoelectrocatalysis were investigated.UV-Vis experiments show that absorption of Bi_xTiO_y-TiO₂ composite materials in visible light region is greater than that of pure TiO₂.PL experiments prove that light quantum efficiency of composite materials is higher than that of pure TiO₂.The photoelectric catalysis experiments of simulated ballast water containing 10⁶ CFU/mL bacteria show that the sterilization efficiency reaches 100% under 20 W germicidal lamp irradiation for 2 min.The impressed voltage is 9 V and the electrode contact area with solution is 140 cm².Sterilization efficiency remains the same when the same electrode is used repeatedly 20 times.
- Bi_xTiO_y-TiO₂ composite film,
- photoelectric catalysis,
- simulated ballast water,
- sterilization
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Photoelectrocatalytic Removal of Bacteria in Simulated Ballast Water Using BixTiOy-TiO2 Composite Film Electrode

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Photoelectrocatalytic Removal of Bacteria in Simulated Ballast Water Using Bi_xTiO_y-TiO₂ Composite Film Electrode