CAJ | 학술논문

采用同轴静电纺丝技术，以二氧化钛（T iO2）水溶液为壳层、聚乙烯醇（PV A ）水溶液为芯层进行同轴静电纺丝，成功制备出了PVA＠ TiO2纳米纤维光催化材料。通过热重-差热分析（TG-DTA）、X射线衍射、扫描电镜对样品进行了表征。结果显示：T iO2纳米粒子的负载量高达91％，是同类方法的2倍之多，同时具有良好的负载牢固的性能；研究了其在紫外光照射下光催化降解罗丹明B的能力，实验表明，20 mL的1×10-5 mol/L罗丹明B溶液在10 min内完全降解。
채용동축정전방사기술，이이양화태（T iO2）수용액위각층、취을희순（PV A ）수용액위심층진행동축정전방사，성공제비출료PVA＠ TiO2납미섬유광최화재료。통과열중-차열분석（TG-DTA）、X사선연사、소묘전경대양품진행료표정。결과현시：T iO2납미입자적부재량고체91％，시동류방법적2배지다，동시구유량호적부재뢰고적성능；연구료기재자외광조사하광최화강해라단명B적능력，실험표명，20 mL적1×10-5 mol/L라단명B용액재10 min내완전강해。
The PVA@ TiO2 nanofiber photocatalytic materials are successfully prepared by coaxial elec-trospinning technique with TiO2 aqueous solution as the shell layer ,and polyvinyl alcohol (PVA) solution as the core layer .The as-prepared PVA@ TiO2 nanofibers are characterized by thermogravimetry-differen-tial thermal analysis (TG-DTA) ,X-ray diffraction and scanning electron microscope .The results show the capacity of TiO2 nanofibers is as high as 91% ,more than twice of the similar methods .Meanwhile ,TiO2 nanofibers could well on load on PVA firmly .Furthermore ,under UV light irradiation ,the photodecom-position of Rhodamine B was investigated .The results show 20 mL 1 × 10-5 mol/L Rhodamine B solution is completely degraded within 10 min .