纺织学报 ›› 2017, Vol. 38 ›› Issue (06): 163-168.doi: 10.13475/j.fzxb.20170201007

• 纺织科技新见解学术沙龙专栏 • 上一篇    下一篇

负载掺杂纳米TiO2耐久抗菌织物的制备与表征

  

  • 收稿日期:2017-02-09 修回日期:2017-03-03 出版日期:2017-06-15 发布日期:2017-06-16

Preparation ana durable antibacterial fabric loaded with doped nano-TiO2

  • Received:2017-02-09 Revised:2017-03-03 Online:2017-06-15 Published:2017-06-16

摘要:

为解决特种军需及医用织物在可见光下的耐久性抗菌问题,以钛酸四丁酯为钛源、硫脲和尿素为掺杂体、棉针织布为基材,通过快速溶胶凝胶法负载和低温热处理,制备出硫氮共掺杂纳米二氧化钛(S-N-TiO2) 可见光催化耐久性抗菌织物。利用紫外可见漫反射吸收光谱、X射线光电子能谱和扫描电子显微镜,表征分析抗菌材料的光谱性质和微观形貌;以大肠杆菌、金黄色葡萄球菌为目标样本,采用振荡法,研究测试抗菌织物的可见光催化抗菌性能。结果表明:S、N以取代型和间隙型掺进TiO2晶格中,使其吸收边带红移至可见光区,且吸收强度较高;抗菌织物表面包裹着一层致密的S-N-TiO2薄膜,对金黄色葡萄球菌的抑菌率均优于AAA级,对大肠杆菌的均高于AA级。

关键词: 共掺杂纳米TiO2, 可见光照射, 棉针织布, 耐久性, 抗菌性能

Abstract:

To solve the durability antibacterial problem on special military supplies and medical textile fabric under visible light irradiation, by using tetrabutyl titanate as the Ti source, thiourea and urea as the dopant, and cotton knitted fabric as the base materials, visible light catalytic durability antibacterial cotton knitted fabric loaded with S-N codoped nano-TiO2 (S-N-TiO2) was prepared by fast sol-gel loading in combination with low temperature treatment. The light absorption propertes and microstructure of the prepared samples were characterized by UV-Vis spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy. Using Escherichia coli and Staphylococcus aureus as target object, the visible light catalytic antibacterial properties of the fabric were investigated by shake flask method. The results indicate that sulfur and nitrogen atoms are incorporated into the TiO2 lattice as substitutional and interstitial forms, which allowed light absorption band edge redshift into the visible light region and the absorption intensity was increased. The dense film of S-N-TiO2 is coated on the surface of the fabric samples. The antibacterial rates of all the samples for Staphylococcus aureus are superior to the AAA standard, for Escherichia coli are superior to the AA standard.

Key words: co-diped TiO2, visible light irradiation, cotton knitted fabric, durability, antibacterial property

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