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Preparation method of holmium phosphate nano-materials

A nanomaterial and holmium phosphate technology, which is applied in the field of preparation of holmium phosphate nanomaterials, can solve the problems of water pollution, low output, and high requirements for reaction equipment, and achieve the effects of reducing production costs, mild preparation conditions, and facilitating industrial production.

Inactive Publication Date: 2013-01-02
SHENZHEN UNIV
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Problems solved by technology

However, the disadvantages of this hydrothermal synthesis method are: high requirements for reaction equipment, high cost, low output, and difficulty in industrialized production; templates are usually organic macromolecular compounds, such as phosphorus-containing surfactants, and some may cause Water pollution, some are easy to volatilize into the air, destroying the ecological environment

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  • Preparation method of holmium phosphate nano-materials
  • Preparation method of holmium phosphate nano-materials
  • Preparation method of holmium phosphate nano-materials

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preparation example Construction

[0053] A method for preparing a holmium phosphate nanomaterial according to an embodiment of the present invention comprises the following steps:

[0054] S01: Separately prepare Ho 3+ Saline solution and PO 4 3- saline solution;

[0055] S02: To the Ho 3+ Add the PO to the saline solution 4 3- Salt solution, to get mixed solution I;

[0056] S03: stirring the mixed solution I, adjusting the pH value of the mixed solution I to 0.5-3.0 to obtain the mixed solution II;

[0057] S04: aging the mixed liquid II at 20° C. to 90° C. for more than 1 hour under ambient pressure to obtain the holmium phosphate nanomaterial.

[0058] In step S01, the Ho 3+ Saline solution and PO 4 3- The saline solution was prepared with soluble Ho 3+ Salt and soluble orthophosphate PO 4 3- Salt is the solute and water is the solvent. For example, the soluble Ho 3+ The salt can be holmium nitrate, holmium chloride, etc., and also includes 2 o 3 Soluble Ho generated by reacting with acid ...

Embodiment 1

[0070] Weigh a certain mass of holmium nitrate [Ho(NO 3 ) 3 ·6H 2 O] and disodium phosphate [Na 2 HPO 4 12H 2 [0], were prepared with deionized water respectively to a concentration of 0.1 mol / liter holmium nitrate aqueous solution and 25 milliliters of disodium hydrogen phosphate aqueous solution. The holmium nitrate solution was placed in an Erlenmeyer flask, stirred with a magnetic stirrer at a speed of 350 rpm, and the disodium hydrogen phosphate solution was dropped into the holmium nitrate solution while stirring. Stirring was continued for 1 hour, during which the pH value of the mixed solution was adjusted to 1.55 with a diluted 10% orthophosphoric acid aqueous solution, and a certain amount of deionized water was added to make the total volume of the mixed solution 80 ml. After stopping stirring, place the Erlenmeyer flask containing the mixed solution in a constant temperature water bath at 90°C, and age it under ambient pressure for 12 hours, then take out the ...

Embodiment 2

[0072] Weigh a certain mass of holmium nitrate [Ho(NO 3 ) 3 6H 2 O] and diammonium phosphate [(NH 4 ) 2 HPO 4 ], and deionized water was used to prepare respectively 25 milliliters of holmium nitrate aqueous solution and diammonium phosphate aqueous solution with a concentration of 0.1 mol / liter. The holmium nitrate solution was placed in an Erlenmeyer flask, stirred with a magnetic stirrer at a speed of 350 rpm, and 25 ml of the diammonium phosphate aqueous solution was dropped into the holmium nitrate aqueous solution while stirring. Stirring was continued for 1 hour. During this period, the pH value of the mixed solution was adjusted to 1.10 with a diluted 20% orthophosphoric acid aqueous solution, and a certain amount of deionized water was added to make the total volume of the mixed solution 80 ml. After stopping the stirring, place the Erlenmeyer flask containing the mixed solution in a constant temperature water bath at 90°C, and after aging for 2 hours under ambi...

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Abstract

The invention provides a preparation method of holmium phosphate nano-materials. The preparation method comprises the following steps: respectively preparing an Ho<3+> salt solution and a PO4<3-> salt solution; adding the PO4<3-> salt solution to the Ho<3+> salt solution under continuous stirring to obtain a mixed solution I; stirring the mixed solution I, and adjusting the pH value of the mixed solution I to 0.5-3.0 to obtain a mixed solution II; and ageing the mixed solution II at 20-90DEG C under an environmental pressure for above 1h to obtain the holmium phosphate nano-materials (comprising nano-wires, nano-rods, nano-tubes, nano-fibers and nano-particles). The preparation method can be implemented by adopting simple and cheap equipment under the environmental pressure, so it is convenient for realizing the industrialized production; and there is no need to add a template in the preparation process, so the environmental influence possibly brought by a waste liquid is avoided.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a preparation method of holmium phosphate nanomaterials. Background technique [0002] Rare earth elements include the lanthanides with atomic numbers 57 to 71 and the congeners scandium and yttrium. These elements not only have similar physical and chemical properties, but also due to their outer electronic structure (4f 0-14 5d 0-1 6S 2 ) characteristics determine their high chemical reactivity. Holmium is the 67th element in the periodic table of elements and belongs to the heavy rare earth element. Holmium is widely used as rare earth luminescent material, up-conversion luminescent material, special glass and colored glass material, superconducting material, etc. Such as lamps used for making square lighting and filming, etc. - holmium holmium lamps; doped holmium (Ho 3+ ) SrF 2 The crystal can realize the up-conversion of laser output, under the exci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/37B82Y30/00
Inventor 周晓明陈正棚子邓桦
Owner SHENZHEN UNIV
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