Facile Preparation of Cu/TiO2 Nanocomposite via Photocatalysis and their Antibacterial Performance

Bo Xi She; Jun Biao Long; Yuan Ming Deng; Xue Juan Wan; Ke Jun Zhu; Jiao Ning Tang

doi:10.4028/www.scientific.net/KEM.645-646.1314

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 645-646Facile Preparation of Cu/TiO2 Nanocomposite via...

Facile Preparation of Cu/TiO₂ Nanocomposite via Photocatalysis and their Antibacterial Performance

Abstract:

Cu/TiO₂ nanocomposite was first prepared by photocatalytic reduction according to optimal processing condition selected via orthogonal test: 2.0% of glucose, 0.25% of TiO₂, 0.3% of CuCl₂ and reaction time of 12 h. Multiple characterization methods were utilized to confirm the structure of Cu/TiO₂ nanocomposite, and its antibacterial property against Escherichia coli (E.coli) was then investigated in detail. The obtained Cu/TiO₂ (ca. 50 nm) was composed of elemental copper, TiO₂ and a small amount of unreacted CuCl₂. EDTA titration and XRF indicated that solid content of Cu was about 61.68%. Antibacterial test showed that the inhibition zone diameter of Cu/TiO₂ with 1% solid content is 15.77 mm and the minimum bactericidal concentration (MBC) of which is 5 mg/mL. Furthermore, Cu/TiO₂ (1.0 wt%) was added into a super-hydrophilic coating for the aluminum cooling fin of air conditioner. The antibacterial ability of the fin can be significantly improved without obvious changes of hydrophilicity, which can reach the national standard (grade I).

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Periodical:

Key Engineering Materials (Volumes 645-646)

Pages:

1314-1319

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.645-646.1314

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Online since:

May 2015

Authors:

Bo Xi She, Jun Biao Long, Yuan Ming Deng, Xue Juan Wan, Ke Jun Zhu, Jiao Ning Tang*

Keywords:

Antibacterial Properties, Cu/TiO₂ Nanocomposite, Hydrophilic Aluminum Foil, Photocatalysis

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