Low temperature preparation of nano TiO2 and
its application as antibacterial agents
its application as antibacterial agents
(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)
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