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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    Special 1    November 2007

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Low temperature preparation of nano TiO2 and
its application as antibacterial agents
Deng Hua(邓  桦) 1, 2, K. Cheuk3, ZHENG Wei-ning(郑卫宁) 2,
WEN Chen(文  晨)2, XIAO Chang-fa(肖长发) 2

1. School of Textiles, Tianjin Polytechnic University, Tianjin 300160, China;
2. Tianjin Municipal Key Lab of Fiber Modification and Functional Fiber, Tianjin Polytechnic University,
Tianjin 300160, China;
3. Institute of Textiles & Clothing, The Hong Kong Polytechnic University, Hong Kong, China

Abstract:A low temperature preparation of nano TiO2 using sol-gel method was proposed. The antibacterial properties of the treatment solution and the treated cotton fabrics obtained via a dip-padding process were evaluated. XRD pattern shows that the nano TiO2 produced is an anatase phase. Aqueous nano-dispersion of the nano TiO2 exhibites positive results as an antibacterial finishing agent for cotton fabrics. The treatment solution possesses antibacterial rates of over 92% and 88.9% against Escherichia coli and Bacillus subtilis, respectively. The treated fabrics are slightly downgraded but still maintained over 89% and 83% of reduction towards the same bacteria. After washing for 50 times, the antibacterial performances of the treated fabric still remains at a relatively high level, indicating the durable characteristic of nano TiO2 treatment.

 

Key words: nano- titania; crystal grain; antibacterial properties; cotton fabric

ISSN 1672-7029
CN 43-1423/U

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