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Preparation method of lanthanum phosphate nano-wires

A technology of lanthanum phosphate nano and salt solution, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., which can solve the problems of water pollution, low output, and damage to the ecological environment, and achieve the effects of reducing production costs and mild preparation conditions

Inactive Publication Date: 2013-01-02
SHENZHEN UNIV
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  • Claims
  • Application Information

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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 lanthanum phosphate nano-wires
  • Preparation method of lanthanum phosphate nano-wires
  • Preparation method of lanthanum phosphate nano-wires

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preparation example Construction

[0051] A method for preparing lanthanum phosphate nanowires according to an embodiment of the present invention comprises the following steps:

[0052] S01: Prepare La separately 3+ Saline solution and PO 4 3- saline solution;

[0053] S02: To the La 3+ Add the PO to the saline solution4 3- Salt solution, to get mixed solution I;

[0054] S03: stirring the mixed solution I, adjusting the pH value of the mixed solution I to 0.8-9.0 to obtain the mixed solution II;

[0055] S04: aging the mixed solution II at 4° C. to 95° C. for more than 1 hour under ambient pressure to obtain the lanthanum phosphate nanowires.

[0056] In step S01, the La 3+ Saline solution and PO 4 3- The saline solution was prepared with soluble La commonly used in this field. 3+ Salt and soluble orthophosphate PO 4 3- Salt is the solute and water is the solvent. For example, the soluble La 3+ The salt can be lanthanum nitrate, lanthanum chloride, etc., also including 2 o 3 Soluble La produce...

Embodiment 1

[0067] Weigh a certain mass of lanthanum nitrate [La(NO 3 ) 3 ·6H 2 O] and disodium phosphate [Na 2 HPO 4 12H 2 [0], be prepared with deionized water to be respectively 25 milliliters of lanthanum nitrate aqueous solution and disodium hydrogen phosphate aqueous solution that concentration is 0.1 mol / liter. The lanthanum nitrate solution was placed in a conical flask, stirred with a magnetic stirrer at a speed of 400 rpm, and the disodium hydrogen phosphate solution was dropped into the lanthanum nitrate solution while stirring. Stirring was continued for 1 hour, during which the pH value of the mixed solution was adjusted with 0.3 mol / L dilute phosphoric acid, and a certain amount of deionized water was added to make the pH value of the mixed solution 1.75, and the total volume was 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 ...

Embodiment 2

[0069] Weigh a certain mass of lanthanum nitrate [La(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 lanthanum nitrate aqueous solution and diammonium phosphate aqueous solution with a concentration of 0.1 mol / liter. The lanthanum nitrate solution was placed in a conical flask, stirred with a magnetic stirrer at a speed of 400 rpm, and the diammonium phosphate solution was dropped into the lanthanum nitrate solution while stirring. Stirring was continued for 1 hour, and 1 milliliter of orthophosphoric acid aqueous solution diluted to 10% was added during the period, and the pH value of this mixed solution was 1.64 (La in the mixed solution 3+ and PO 4 3- The molar concentration ratio is 0.6), and then add a certain amount of deionized water, so that the total volume of the mixed solution is 80 ml. After stopping the stirring, place the Erlenmeyer flask containing the mixed solution in ...

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Abstract

The invention provides a preparation method of lanthanum phosphate nano-wires. The preparation method comprises the following steps: respectively preparing an La<3+> salt solution and a PO4<3-> salt solution; adding the PO4<3-> salt solution to the La<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 0.8-9.0 to obtain a mixed solution II; and ageing the mixed solution II at 4-95DEG C under an environmental pressure for above 1h to obtain the lanthanum phosphate nano-wires (comprising hexagonal crystal phase lanthanum phosphate nano-wires and monoclinic crystal phase lanthanum phosphate nano-wires). The preparation method can be implemented through 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 lanthanum phosphate nanowires (including hexagonal phase and monoclinic phase lanthanum phosphate nanowires). Background technique [0002] Rare earth elements include the lanthanides with atomic numbers 57 to 71 and the congeners scandium and yttrium. Due to the outer electronic structure of these elements (4f 0-145 d 0-1 6S 2 ) characteristics, so that they have similar physical and chemical properties, and determine their high chemical reactivity. Lanthanum is the 57th element in the periodic table, ranking first among the rare earth elements. Lanthanum has the largest ionic radius among the rare earth elements. Lanthanum has a wide range of applications and excellent application potential in fluorescent materials, laser materials, special alloys, new generation electronic materials, superconducting materials and hydrogen storage ...

Claims

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Application Information

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IPC IPC(8): C01B25/37B82Y30/00
Inventor 周晓明杨锦斌曹睿
Owner SHENZHEN UNIV
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