Method for preparing yttrium sulfide nano-fibers
A nanofiber, yttrium sulfide technology, used in fiber processing, fiber chemical characteristics, chemical post-processing of rayon, etc.
Inactive Publication Date: 2012-10-03
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
At present, there is no preparation of Y by electrospinning technology. 2 S 3 Related reports on nanofibers
Method used
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[0020] Example: Weigh a certain amount of yttrium oxide, dissolve it with dilute nitric acid and evaporate to obtain Y(NO 3 ) 3 For crystals, add an appropriate amount of DMF solvent, then weigh a certain amount of PVP and add it to the above solution, magnetically stir at room temperature for 3 hours, and stand for 2 hours to form a spinning solution. The mass percentages of each component of the spinning solution are: yttrium nitrate content of 9%, PVP content of 9%, and solvent DMF content of 82%. Put the prepared spinning solution into the liquid storage tube of the spinning device for electrostatic spinning. The inner diameter of the nozzle is 1mm, and the angle between the nozzle and the horizontal plane is adjusted to 20°. A DC voltage of 13kV is applied, the curing distance is 15cm, and the room temperature is 16~ 30℃, relative humidity is 50%~70%, get PVP / Y(NO 3 ) 3 Composite nanofibers. The said PVP / Y(NO 3 ) 3 The composite nanofibers are put into a programmed tempera...
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Abstract
The invention relates to a method for preparing yttrium sulfide nano-fibers, belonging to the technical field of preparing nano materials. Yttrium sulfide nano-particles and nano-rods are prepared by the prior art. The invention utilizes a method which combines an electrostatic spinning technology with a vulcanizing technology to prepare Y2O3 nano-fibers. The method provided by the invention comprises two steps of: (1) preparing Y2O3 nano-fibers: utilizing the electrostatic spinning technology to prepare polyvinyl pyrrolidone / yttrium nitrate PVP / Y(NO3)3 composite nano-fibers; then carrying out a heat treatment to prepare the Y2O3 nano-fibers; (2) preparing Y2S3 nano-fibers: utilizing carbon disulfide CS2 to carry out a vulcanizing treatment on the Y2O3 nano-fibers to obtain pure-phase Y2O3 nano-fibers with novel structure, wherein the fibers have good crystal forms, the diameter is 171-233 nm and the length is more than 200 microns. The yttrium sulfide nano-fibers provided by the invention are novel materials with an important function and can be importantly applied to the fields of high-performance thermoelectric material, ceramic, toxin-free environmental-friendly pigment, nano devices and the like. The method provided by the invention has the advantages of simplicity and feasibility, can be used for volume production and has a wide application prospect.
Description
Technical field [0001] The invention relates to the technical field of nano material preparation, in particular to a method for preparing yttrium sulfide nanofibers. Background technique [0002] Nanofiber refers to a linear material with two dimensions in the nanometer scale on the three-dimensional spatial scale of the material. The radial scale is usually on the order of nanometers, and the length is larger. As the radial dimension of nanofibers is as small as nanometers, it shows a series of characteristics, the most prominent is the large specific surface area, so its surface energy and activity increase, and then produce small size effect, surface or interface effect, quantum size effect , Macroscopic quantum tunneling effect, etc., and therefore exhibit a series of specificities in chemistry and physics (heat, light, sound, electricity, magnetism, etc.). In the prior art, there are many methods for preparing nanofibers, such as spinning method, template synthesis method, ...
Claims
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IPC IPC(8): D01F9/08D01F11/00D01D5/00
Inventor 董相廷高萍王进贤于文生刘桂霞徐佳
Owner CHANGCHUN UNIV OF SCI & TECH