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Preparation method of cerium phosphate nano-wires

A nanowire and cerium phosphate technology, which is applied in the field of nanomaterials, can solve the problems of water pollution, harsh preparation conditions, 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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  • Description
  • Claims
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Problems solved by technology

[0004] However, the disadvantages of this hydrothermal synthesis method are: high requirements for reaction equipment, high cost, low output, and difficulty in industrial production; templates are usually organic macromolecular compounds, such as phosphorus-containing surfactants, and some will cause water pollution , some are easy to volatilize into the air and damage the ecological environment
[0005] Patent 200910109858.0 provides a method for preparing cerium phosphate nanowires that is convenient for industrial production and environmentally friendly, but the preparation conditions are relatively harsh, and the pH range of the reaction system during the reaction is narrow; the aging temperature range is narrow and relatively high; mixing The concentration range of the solution is relatively small, which affects the yield of cerium phosphate nanowires and its application range

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preparation example Construction

[0046] A method for preparing cerium phosphate nanowires according to an embodiment of the present invention comprises the following steps:

[0047] S01: Separately prepare Ce 3+ Saline solution and PO 4 3- saline solution;

[0048] S02: To the Ce under continuous stirring 3+ Add the PO to the saline solution 4 3- Salt solution, to get mixed solution I;

[0049] S03: stirring the mixed solution I, adjusting the pH value of the mixed solution I to 0.5-10.0 to obtain the mixed solution II;

[0050] S04: aging the mixed liquid II at 4° C. to 89° C. for more than 1 hour under ambient pressure to obtain the cerium phosphate nanowires.

[0051] In step S01, the Ce 3+ Saline solution and PO 4 3- The salt solution was respectively prepared with soluble Ce commonly used in this field 3+ Salt and soluble orthophosphate PO 43- Salt is the solute and water is the solvent. For example, the soluble Ce 3+ The salt can be cerium nitrate, cerium chloride, etc., and also includes ...

Embodiment 1

[0060] Weigh a certain mass of cerium nitrate [Ce(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 cerium nitrate aqueous solution and disodium hydrogen phosphate aqueous solution that concentration is 0.05 mol / liter. The cerium nitrate solution was placed in an Erlenmeyer flask, stirred with a magnetic stirrer at a speed of 380 rpm, and the disodium hydrogen phosphate solution was dropped into the cerium nitrate solution while stirring. Stirring was continued for 1 hour. During this period, adjust the pH value of the mixed solution with 20% orthophosphoric acid aqueous solution, and add a certain amount of deionized water, so that the pH value of the mixed solution is 1.55, and the total volume is 80 ml. After stopping the stirring, place the Erlenmeyer flask containing the mixed solution in a constant temperature water bath at 89°C, age for 12 hours under ambient pressure, then turn of...

Embodiment 2

[0062] Weigh a certain mass of cerium nitrate [Ce(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 cerium nitrate aqueous solution and disodium hydrogen phosphate aqueous solution that concentration is 0.05 mol / liter. The cerium nitrate solution was placed in an Erlenmeyer flask, stirred with a magnetic stirrer at a speed of 380 rpm, and the disodium hydrogen phosphate solution was dropped into the cerium nitrate solution while stirring. Stirring was continued for 1 hour. During this period, adjust the pH value of the mixed solution with 20% orthophosphoric acid aqueous solution, and add a certain amount of deionized water, so that the pH value of the mixed solution is 1.60, and the total volume is 80 ml. After stopping the stirring, place the Erlenmeyer flask containing the mixed solution in a constant temperature water bath at 70°C, age for 12 hours under ambient pressure, then turn off...

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Abstract

The invention provides a preparation method of cerium phosphate nano-wires. The preparation method comprises the following steps: respectively preparing a Ce<3+> salt solution and a PO4<3-> salt solution; adding the PO4<3-> salt solution to the Ce<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 0.5-10.0 to obtain a mixed solution II; and ageing the mixed solution II at 4-89DEG C under an environmental pressure for above 1h to obtain the cerium 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 cerium phosphate nanowires. 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. Cerium is the 58th element in the periodic table and belongs to the light rare earth element. Cerium is widely used in fluorescent materials, conductive materials, special ceramic materials, ion exchange and catalytic materials. Rare earth cerium phosphate nanomaterials have played a role in more and more fields. For example, cerium phosphate nanocrystals, nanorods, nanowires, or nanofibers are used as mesoporous materials, luminescent materials, lubricating materials...

Claims

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Application Information

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IPC IPC(8): C01B25/37B82Y30/00
Inventor 周晓明张培新朱芳梅谢倩李斯斯周碧涛
Owner SHENZHEN UNIV
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