A preparation method and application of cubic pyrochlore phase nanofibers based on electrospinning method

Abstract

The invention discloses a preparation method of cubic pyrochlore phase nanofiber based on an electrospinning method and application. The method includes using dimethylformamide as a solvent, adding anappropriate amount of polyvinylpyrrolidone to form a Taylor cone in an electrostatic field by dropping, preparing a one-dimensional nano material by the electrospinning method under the action of liquid surface tension and the electric field, and removing organic matter residues by heating, heat preservation and cooling to obtain the cubic pyrochlore phase one-dimensional nano material. The doping process of other rare earth ions and the traditional double doping or multi-doping processes are avoided, and the preparation method is simple and practicable, good in repeatability and capable of meeting the batch production requirements. A green up-converting luminescent substrate involved is an oxide with good chemical stability, non-toxic, inexpensive and prone to meet industrial productionrequirements. The prepared one-dimensional pure pyrochlore phase nano material is expected to play an important role in the fields of display, anti-counterfeiting, biological detection, infrared sensors, solar photovoltaic devices and the like.

Description

technical field

[0001] The invention belongs to rare earth ternary Bi 2 Ti 2 o 7 : The field of Er compound one-dimensional nanomaterial preparation and luminescent technology, specifically relates to a preparation method and application of cubic pyrochlore phase nanofibers based on electrospinning method. Background technique

[0002] Up-conversion luminescent material is a new type of optical functional material that can convert infrared light invisible to the naked eye into visible light, also known as multi-photon material. It has very important application value in the fields of anti-counterfeiting, display, biological detection, imaging, and photothermal treatment of diseases. At present, the main up-conversion luminescent materials can be divided into rare earth fluorides (NaYF 4 etc.), rare earth oxyhalides (represented by YOCl 3 etc.), rare earth sulfur oxides (with La 2 o 2 S, Y 2 o 2 S, etc.), rare earth oxides and composite oxides (represented by Y 2 o ...

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