摘要
以钛酸丁酯、聚乙烯吡咯烷酮(PVP)、无水乙醇为原料,利用静电纺丝技术制备出Ti(OC4H9)4/PVP纳米纤维,经500~1000℃高温煅烧制得TiO2纳米纤维,再通过水热法将AgBr纳米颗粒负载到TiO2纳米纤维表面。利用X射线衍射仪、场发射扫描电镜、差热-热重分析对AgBr/TiO2纳米纤维进行表征分析。利用甲基橙(MO)为降解底物模拟染料废水,研究TiO2、AgBr/TiO2纳米纤维的光催化性能。分析结果表明,经800℃煅烧后的TiO2纳米纤维,在添加量为100 mg时光催化效果较好;相同条件下,AgBr/TiO2纳米纤维的光催化降解率高于TiO2纳米纤维,AgBr/TiO2纳米纤维对甲基橙的降解率为95.97%。
AgBr/TiO2 nanofibers were fabricated by a combination of hydrothermal and electrospinning methods.Ti(OC4H9)4/PVP nanofibers were prepared by electrospinning method using Ti(OC4H9)4,PVP and absolute ethanol as raw materials.TiO2 nanofibers were obtained after calcination at 500℃tO1000℃.AgBr nanoparticles were immobilized on TiO2 nanofibers under hydrothermal condition.AgBr/TiO2 nanofibers were characterized by X-ray diffraction(XRD),field emission scanning electron microscopy(FE-SEM)and differential thermo-thermogravimetric(TG-DTA)analysis respectively.The photocatalytic property of TiO2 and AgBr/TiO2 nanofibers were studied using methyl orange(MO)as degradation substrate to simulate dye waste water.The results indicate that the TiO2 nanofibers with the additive amount of 100 mg have better photocatalytic properties after calcined at 800℃.The photocatalytic degradation rate of AgBr/TiO2 nanofibers is found to be higher than that of the TiO2 nanofibers under the same conditions.The degradation rate of methyl orange by AgBr/TiO2 nanofibers is about 96%.
作者
孙楠
陈鹏
任有良
SUN Nan;CHEN Peng;REN Youliang(Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources,College of Chemical Engineering and Modern Materials,Shangluo University,Shangluo 726000,China;College of Material Science and Art Design,Inner Mongolia Agricultural University,Huhhot 010018,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2021年第1期130-137,共8页
Journal of Synthetic Crystals
基金
陕西省科技厅项目(2018JQ2048)
商洛学院科研项目(20SKY17)。
