The Photocatalytic and Antibacterial Activity of Cu-Doped TiO2 Thin Films

Weerachai SANGCHAY, Lek SIKONG, Kalayanee KOOPTARNOND

Abstract


Thin films of TiO2 and TiO2 doped with Cu were prepared by sol-gel method. The prepared films were calcined at the temperature of 400 °C for 2 h with the heating rate of 10°C/min. Physical properties as well as crystal compositions of the fabricated films were characterized by XRD, EDX SEM and AFM techniques. The results show that all samples have thickness range from 0.25 to 1.0 um. The film surfaces are typically uniform and dense with TiO2 nanoparticles. The photocatalytic activities of the thin films were also tested via the degradation of methylene blue (MB) solution under UV irradiation. Finally, antibacterial activity efficiency was evaluated by the inactivation of E.coli. It was observed that higher Cu concentration gives better photocatalytic activity. With the highest dopant concentration investigated in this experiment (TiO2-1.0Cu condition) the films show photocatalytic of 70 % and antibacterial activity of 100 %.

Keywords


TiO2, thin films, photocatalytic activity, antibacterial activity, Cu dope

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References


L Yang, W Xiaolei, Y Fan and Y Xiurong. Excellent antimicrobial properties of mesoporous anatase TiO2 and Ag/TiO2 composites films. Micropor. Mesopor. Mat. 2008; 114, 431-9.

F Guifu, SV Patricia and TL Chhiu. Anatase TiO2 nanocomposites for antimicrobial coating. J. Phys. Chem. 2005; B109, 8889-98.

A Fujishima, TN Rao and DA Tryk. Titanium dioxide photocatalysis. J. Photochem. Photobiol. 2000; C1, 1-21.

H Schmidt, G Jonschker, S Goedicke and M Mening. The sol-gel process as a basic technology for nanoparticle-dispersed inorganic-organic composites. J. Sol-Gel Sci. Tech. 2000; 19, 39-51.

Y Xianfeng, C Feng and Z Jinlong. Effect of calcination on the physical and photocatalytic properties of TiO2 powders prepared by sol-gel template method. J. Sol. Gel-Sci Tech. 2005; 34, 181-7.

CD Lokhande, OP Bong, SP Hyung, DJ Kwang and SJ Oh. Electrodeposition of TiO2 and RuO2 thin films for morphology-dependent applications. Ultramicroscopy 2005; 105, 267-74.

S Hongfu, W Chenngyu, P Shihong, L Xiping, T Ying, T Huajuan and L Ming. J. Non-Crystalline Solids 2008; 354, 1440-3.

Z Jerzy. Past and present of sol-gel science technology. J. Sol. Gel-Sci Tech. 1997; 8, 17-22.

W Tianfa, G Jianping, S Juyun and Z Zhongshen. Preparation and characterization of TiO2 thin films by the sol-gel process. J. Mater. Sci. 2001; 36, 5923-6.

K Ubolchonlakate, L Sikong and T Tontai. Formaldehyde degragation by photocatalytic Ag-Doped TiO2 film of glass fiber roving. J. Nanosci. Nanotechnol. 2010; 10, 1-4.

S Boonyod, W Sutthisripok and L Sikong. Antibacterial activity of TiO2 and Fe3+ doped TiO2 nanoparticles synthesized at low temperature. Adv. Mater. Res. 2011; 214, 197-201.

X Mingyang, Z Jinlong and C Feng. New approaches to prepare nitrogen-doped TiO2 photocatalysts and study on their photocatalytic activities in visinle light. Appl. Catal. B Environ. 2009; 89, 563-9.

S Kaixi, Z Jiahong, B Jianchun and F Yuying. Photocatalytic acivity of (Copper, Nitrogen)-Co doped titanium dioxide nanoparticles. J. Am. Ceram. Soc. 2008; 91, 1369-71.

M Gartner, A Ghita, M Anastasescu, P Osiceanu, G Dobrescu, M Zaharescu, D Macovei, M Modreanu, C Trapalis and G Kordas. The Influence of Cu on the morphological and chemical properties of nanostructured TiO2 films. J.Optoelectron. Adv. Mater. 2005; 7, 401-5.

W Sangchay, L Sikong and K Kooptarnond. Comparison of photocatalytic reaction of commercial P25 and syntertic TiO2-AgCl nanoparticles. J. Proc. Eng. 2012; 32, 590-6.

H Deng, K Cheuk, WN Zheng, C Wen and CF Xiao. Low temperature preparation of nano TiO2 and its application as antibacterial agents. T. Nonferr. Metal. Soc. 2007; 17, 700-3.

C Wen, H Ssu, T Jeou, C Hsin and H Tzu. Study on photocatalytic degradation of gaseous dichloromethane using pure and iron ion-doped TiO2 prepared by sol-gel method. Chemosphere 2007; 66, 2142-51.


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