摘要
以LaCl3、ZrClO2·8H2O为原料,无水乙醇为溶剂,采用微乳液静电纺丝法制得烧绿石型的锆酸镧纤维,并引入分相剂石蜡在纤维中构筑多孔结构。采用XRD、SEM和BET研究了纤维的结构和形貌,采用PL光谱测试了Eu^3+掺杂的锆酸镧纤维的发光性能。研究表明,引入分相剂石蜡可以改善纤维中的孔结构,当石蜡用量为4 mL时所制备的锆酸镧纤维物相纯度高,其比表面积为20.77 m^2·g^-1,平均孔径19.3 nm,有较为丰富的孔结构且分布均匀。因此,在该纤维中掺杂Eu^3+后,由于氧离子与稀土离子间的电荷跃迁,以及多孔结构光散射的作用,多孔纤维的发光强度有所提高。
The pyrochlore type of lanthanum zirconate fibers were prepared by the microemulsion electrospinning method using LaCl3 and ZrClO2·8H2O as raw materials,and C2H5OH as solvent,and paraffin was introduced to construct porous structure of fiber as phase separation agent.The fiber structure and morphology were determined by XRD,SEM and BET.The luminescence properties of Eu^3+ doped lanthanum zirconium fibers were measured by photoluminescence.The results show that the introduction of phase separation agent of paraffin can improve the pore structure in the fiber.When the amount of paraffin is 4 mL,the prepared lanthanum zirconate fibers have a high phase purity,a specific surface area of 20.77 m^2·g^-1,an average pore size of 19.3 nm,the more abundant structure and uniform distribution.Therefore doped Eu^3+ in the fiber,the luminous intensity of the porous fiber increases due to the charge transition between oxygen ions and rare earth ions,and the light scattering of porous structure increases.
作者
张红燕
季文玲
魏恒勇
崔帅
ZHANG Hongyan;JI Wenling;WEI Hengyong;CUI Shuai(Qinggong College,North China University of Science and Technology,Tangshan 064000,China;College of Materials Science and Engineering,North China University of Science and Technology,Tangshan 063210,China;Key Laboratory of Environment Functional Materials of Tangshan City,Tangshan 063210,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2020年第2期281-285,共5页
Journal of Synthetic Crystals
基金
河北省科技计划项目(15211119)
华北理工大学杰出青年基金(JQ201712)。
关键词
锆酸镧
多孔纤维
微乳液电纺丝法
分相剂
发光性能
lanthanum zirconate
porous fiber
microemulsion electrospinning method
phase separation agent
luminescence property
