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Method for preparing europium-doped lanthanum phosphate porous nanorods on basis of herring sperm DNA template

A technology of europium lanthanum phosphate and herring essence, which is applied in the field of preparing europium-doped lanthanum phosphate porous nanorod based on herring essence DNA template

Inactive Publication Date: 2011-05-25
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no application of DNA as a template to prepare LaPO 4 :Eu 3+ Related reports on porous nanorods

Method used

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  • Method for preparing europium-doped lanthanum phosphate porous nanorods on basis of herring sperm DNA template
  • Method for preparing europium-doped lanthanum phosphate porous nanorods on basis of herring sperm DNA template
  • Method for preparing europium-doped lanthanum phosphate porous nanorods on basis of herring sperm DNA template

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Embodiment

[0019] Example: Take 0.0623g herring sperm DNA, put it in 20mL deionized water, stir at low speed for half an hour, and prepare a DNA solution with a concentration of 3.12mg / mL. According to La 3+ / Eu 3+ The molar ratio is 95:5, weigh 0.0350g europium oxide (Eu 2 o 3 ) into a beaker, add nitric acid solution with a volume ratio of nitric acid and deionized water of 1:1 to make it completely dissolved, and slowly evaporate to remove excess nitric acid. After cooling to room temperature, add 60mL of deionized water to obtain Eu(NO 3 ) 3 solution. Weigh 1.732g of La(NO 3 ) 3 ·6H 2 O, added to Eu(NO 3 ) 3 solution, stir to dissolve completely. Add the prepared DNA solution dropwise to the prepared La(NO 3 ) 3 and Eu(NO 3 ) 3 In the mixed solution, stir at room temperature for 24 hours, so that the positively charged lanthanum ions and europium ions are fully adsorbed on the negatively charged phosphate radicals on the DNA and the N atoms on the bases. Weigh 0.5315g ...

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Abstract

The invention discloses a method for preparing europium-doped lanthanum phosphate porous nanorods on basis of a herring sperm DNA template and belongs to the technical field of nano material preparation. The method comprises three steps: (1) preparing mixed solution, namely dissolving Eu2O3 in nitric acid, evaporating the solution to obtain Eu(NO3)3 crystals, adding deionized water, adding La(NO3)3.6H2O to obtain mixed solution of La(NO3)3.6H2O and Eu(NO3)3, and dripping aqueous solution of herring sperm DNA into the mixed solution of La(NO3)3.6H2O and Eu(NO3)3 to obtain the mixed solution, wherein the mole percentage of europium nitrate in the mixed solution of La(NO3)3.6H2O and Eu(NO3)3 is 5 percent; (2) preparing a LaPO4:5-percent Eu<3+> precipitate, namely dripping aqueous solution of (NH4)3PO4 into the mixed solution to obtain the LaPO4:5-percent Eu<3+> precipitate; and (3) preparing LaPO4:5-percent Eu<3+> porous nanorods, namely transferring the LaPO4:5-percent Eu<3+> precipitate to a hydro-thermal reaction kettle, reacting at 160 DEG C for 12 hours, performing centrifugal separation on the precipitate, washing the precipitate by using absolute ethanol, and drying the precipitate at 60 DEG C and under vacuum for 12 hours to obtain crystalline LaPO4:5-percent Eu<3+> porous nanorods, wherein the diameter of the nanorods is 20 to 50 nanometers, and the length of the nanorods is 100 to 200 nanometers. The method is simple, easy to implement, economic and environmentally-friendly and has a bright application prospect.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation research, in particular to a method for preparing europium-doped lanthanum phosphate porous nanorods based on herring sperm DNA templates. Background technique [0002] Rare earth phosphate has good thermal stability and environmental stability, and is widely used as a matrix of luminescent materials, among which LaPO is more researched. 4 . Lanthanum phosphate nano-luminescent material doped with europium ions is an important red fluorescent material with broad application prospects and has attracted people's attention. LaPO with various morphologies has been prepared by various methods such as coprecipitation method, inverse microemulsion method, sol-gel method, hydrothermal and solvothermal method, and electrospinning technology. 4 :Eu 3+ Nanomaterials, such as nanoparticles, nanorods, nanowires, nanofilms and nanofibers, etc. For example, Dai Xuejing et al prepared LaPO by oxalate c...

Claims

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Application Information

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IPC IPC(8): C30B29/14C30B29/62C30B7/10C01B25/26C09K11/81
Inventor 董相廷王进贤刘璐于源华刘桂霞于文生
Owner CHANGCHUN UNIV OF SCI & TECH
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