Nanofiber and its preparation method
A nanofiber and fiber technology, applied in the field of luminescent materials, can solve problems such as poor chemical/optical stability, and achieve the effects of easy control of conditions, stable performance, and reduced production costs
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[0032] On the basis of the nanofibers described above, the embodiments of the present invention also provide a method for preparing the nanofibers. The process flow of the nanofiber preparation method is as follows: image 3 shown, it includes the following steps:
[0033] S01. Provide a quantum dot solution: the quantum dot solution includes quantum dots and a viscosity control agent dispersed in a solvent;
[0034] S02. Provide an inorganic oxide fiber precursor solution, the inorganic oxide nanotube precursor solution includes an inorganic oxide fiber precursor and a viscosity control agent dispersed in the solvent;
[0035] S03. Inject the quantum dot solution into the inner tube of the jet needle, inject the inorganic oxide fiber precursor solution into the outer tube of the jet needle, and use the coaxial double-tube electrospinning technology to prepare the nanofibers.
[0036] In the step S01, the quantum dots are commonly used single-core quantum dots, core-shell qu...
Embodiment 1
[0054] This embodiment provides a nanofiber and a preparation method thereof. The nanofibers include inorganic oxide fiber nanotubes and quantum dots filled in the cavity of the inorganic oxide fiber nanotubes; wherein, the material of the quantum dots includes CdS / Cd 1-x Zn x S / Cd y Zn 1-y S / ZnS quantum dots, the material of the inorganic oxide fiber nanotube is oily ZnO.
[0055] The preparation method of described nanofiber comprises the steps:
[0056] S11. Preparation of quantum dot solution:
[0057] The prepared CdS / Cd 1-x Zn x S / Cd y Zn 1-y S / ZnS quantum dots were prepared into 10 mg / mL n-hexane solution after drying, and at the same time, polyvinylpyrrolidone with a mass ratio of 15% was added to the n-hexane solution, magnetically stirred for 2 hours, and the solution was uniformly dissolved and then allowed to stand for 30 minutes for later use;
[0058] S12. Preparation of inorganic oxide fiber precursor solution:
[0059] Oily ZnO was first prepared, and...
Embodiment 2
[0063] This embodiment provides a nanofiber and a preparation method thereof. The nanofibers include inorganic oxide fiber nanotubes, and quantum dots are filled in the cavity of the inorganic oxide fiber nanotubes; wherein, the quantum dot material includes Cd 1- x Zn x Se / ZnSe quantum dots, the material of the inorganic oxide fiber nanotubes is TiO 2 .
[0064] The preparation method of the nanofiber comprises the following steps:
[0065] S21. Preparation of quantum dot solution:
[0066] The prepared Cd 1-x Zn x After drying, the Se / ZnSe quantum dots were prepared into a 5 mg / mL n-hexane solution. Polyvinylpyrrolidone with a mass ratio of 25% was added to the n-hexane solution, and the solution was magnetically stirred for 2 h. After the solution was evenly dissolved, it was left to stand for 30 min for use.
[0067] S22. Preparation of Inorganic Oxide Fiber Precursor Solution:
[0068] Weigh 0.5g of polyvinylpyrrolidone and dissolve it in 6.25g of ethanol, then ad...
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