以茶叶体内的螺旋导管为模板,通过水热处理制备了氟化铕(EuF3)/螺旋碳微米纤维(HCFs)复合结构。通过X射线衍射(XRD)、场扫描电子显微镜(SEM)和红外光谱(FT-IR)等对样品的物相、结构和形貌进行了表征。结果表明,水热碳化后,生物体内的螺旋导管结构得到了完美保留。室温下光致发射光谱和荧光寿命测试结果显示,在317nm激发波长下,Eu3+与HCFs间发生能量转移现象,使HCFs在紫外光区354nm处发射明显增强,这表明Eu3+/HCFs复合材料是一种新型的紫外发射材料。
王伟, 张志华, 曹奇益, 祝淑媛, 文亚东, 王刚, 王志俊, 孙宇峰, 陶锋
. EuF3/螺旋碳微米纤维(HCFs)复合结构的制备和发光性能[J]. 化工新型材料, 2021
, 49(7)
: 73
-77
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.07.017
EuF3/helical carbon microfibers (HCFs) with composite structure was prepared by hydrothermal method using spiral vessels (SVs) in tea-leaves as template.The phase,structure and morphology of the samples were characterized by X-ray diffraction (XRD),field emission scanning electron microscopy (SEM) and infrared spectroscopy.The results showed that the helical structure was perfectly preserved after hydrothermal carbonization.The results of photoluminescence spectra and fluorescence lifetime at room temperature showed that the energy transfer between Eu3+ and HCFs occurred at the excitation wavelength of 317nm,which significantly enhanced the emission of helical carbon micron fiber at 354nm in the ultraviolet region,indicating that Eu3+/HCFs was a new type of ultraviolet emission material.
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