摘要
采用溶胶-凝胶法制备的稀土离子(Tm)掺杂TiO_2溶胶整理棉织物,在波长400～780 nm的光照条件下,研究了稀土离子掺杂量、溶胶用量、陈化时间和光照强度对负载溶胶织物自清洁功能的影响。结果表明,织物的自清洁功能与溶胶的制备工艺和光催化工艺有关。在21.0 mW/cm^2的光强下照射180 min,Tm掺杂量为2%,溶胶用量0.5 g/L和陈化5 d的条件下,负载溶胶织物对污物的降解率可达到94%左右。棉织物整理后水洗20次,对污物的降解率为80%。但用该方法处理的棉织物,经纬向断裂强力和断裂伸长率均有一定程度的下降。
Cotton fabric was treated with Thulium（Tm）-doped TiO2 sol which was prepared by sol-gel technique. With the spectrum of 400 - 780 nm irradiation, effects of doping concentrations of rare earth ions, sol dosage, aging time and illumination intensity on the self-cleaning properties of loaded fabric were discussed. The results showed that the self-cleaning performance of fabric was relative to sol preparation and photo-catalytic conditions. At 21.0 mW/cm^2 illumination intensity for 180 min,with the Tm molar ratio of 2%, aging for 5 days and sol dosage of 0.5 g/L, the degradation of pollutants was around 94%. Furthermore, the degradation of pollutants reached 80% with the loaded fabric after washing 20 times. While the breaking strength and elongation at break on warp and weft direction decreased after the treatment.
出处
《印染》
北大核心
2010年第2期1-4,共4页
China Dyeing and Finishing
基金
国家自然科学基金项目(20674031)
江苏省企业博士创新项目(BK2009672)
关键词
防污整理
溶胶
凝胶
稀土元素
二氧化钛
光催化剂
棉织物
anti-soiling finish
sol
gelatin
rare earth element
titanium dioxide
photo-catalyst
cotton fabric
