通过浸轧水热法在涤纶织物上原位负载TiO2,研究了低温等离子和碱减量处理涤纶织物对负载TiO2及其光催化性能的影响.结果显示:涤纶织物经低温等离子处理,当处理时间大于30 s时,可见光优化工艺下,MB在可见光下的脱色率更好.30 s时MB的可见光脱色率为81.87%,60 s时可见光脱色率为88.17%;碱减量处理时间为40 min时,在可见光优化和紫外光优化条件下分别负载TiO2,无论是在可见光还是在紫外线辐射下,MB脱色率均可达80%以上,高于未处理负载TiO2涤纶织物对MB的脱色率;同时,利用SEM、XRD、ATR-IR以及UV-VIS对其进行了表征,发现织物上负载的TiO2为锐钛矿型,其平均粒径约7.9 nm,纤维与TiO2之间有一定的键合.在紫外光照射下,经低温等离子和碱减量处理及负载TiO2的织物,其紫外吸光度均有所增加,对紫外线有良好的屏蔽效果.%TiO2 was in situ loaded on polyester fabric by padding hydrothermal treatment. The effects of low temperature plasma and alkali deweighting treatment on the TiO2 loading and its photocatalytic properties were studied. The results showed that when the low temperature plasma treatment time of polyester fabric was more than 30 s, the MB decolorization rate under visible light irradiation was better. The visible light decol-orization rate of MB was 81.87% at 30 s, and the decolorization rate was 88.17% at 60 s. When alkali de-weighting treatment time was 40 min, TiO2 was respectively loaded under visible light and UV light optimal conditions. MB decolorization rate under visible light and UV light could both reach more than 80%, which was higher than the untreated. Meanwhile, it was characterized by SEM, XRD, ATR- IR and UV- VIS. It was found that TiO2 loaded on the fabric was anatase, the average particle size was about 7.9 nm, and there was a certain bond between the polyester fiber and TiO2. Under the UV irradiation, the UV absorbance of the fabric treated by low temperature plasma and alkali deweighting and loaded with TiO2 were increased, which had good shielding effect on the UV.
展开▼
