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Method of preparing perovskite type zirconate hollow nano material

A technology of perovskite and nanomaterials, which is applied in the field of preparation of zirconate nanomaterials, can solve the problems of cumbersome steps and high cost, and achieve good powder dispersion, convenient operation, easy control of size and shell wall thickness Effect

Inactive Publication Date: 2009-04-15
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to prepare and remove the template, the steps are cumbersome and the cost is high

Method used

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  • Method of preparing perovskite type zirconate hollow nano material
  • Method of preparing perovskite type zirconate hollow nano material
  • Method of preparing perovskite type zirconate hollow nano material

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preparation example Construction

[0023] The preparation method (abbreviation preparation method) of the perovskite type zirconate hollow nano material designed by the present invention comprises the following process steps:

[0024] 1. Under stirring conditions, the general formula of 0.001-0.005Mol is ABO 3 Dissolve perovskite-type compounds including metal compounds of barium or strontium at A site and metal compounds of zirconium at B site in 20-30 mL of deionized water, add an appropriate amount of strong inorganic base, and stir for 20-60 minutes to obtain a uniformly dispersed mixture; The A-position barium metal compound refers to one or more mixtures of barium nitrate, barium chloride, barium oxide and barium hydroxide; the A-position strontium metal compound refers to strontium nitrate, strontium chloride, barium oxide One or more mixtures of strontium and strontium hydroxide; the B-site zirconium metal compound is one or more mixtures of zirconium oxychloride, zirconium chloride and zirconium oxide;...

Embodiment 1

[0039] Preparation of BaZrO 3 Hollow nanomaterials. Its process method is as follows:

[0040] (1) Add 0.48g of barium nitrate, 0.538g of zirconium oxychloride and 17.96g of potassium hydroxide to 20mL of deionized water in sequence, and stir at room temperature for 20 minutes to obtain a uniformly dispersed mixed solution;

[0041] (2) The mixed solution obtained in step (1) is put into a 40mL stainless steel reaction kettle lined with polytetrafluoroethylene, sealed, and reacted at 200° C. for 24 hours;

[0042] (3) After the reaction product in step (2) is naturally cooled, remove the upper layer of lye, and under magnetic stirring conditions, wash the resulting product powder with deionized water for 60 minutes, to wash away the lye on the surface of the sample;

[0043] (4) After centrifuging the product powder after washing in step (3), use ultrasonic cleaning for 40 minutes to further wash off the inorganic base adsorbed on the sample powder, then add 20 mL of acetic ...

Embodiment 2

[0047] Preparation of SrZrO 3 Hollow nanomaterials. Its process method is as follows:

[0048] (1) Add 0.146g of strontium nitrate, 0.201g of zirconium oxychloride and 29.45g of potassium hydroxide into 15mL of deionized water in sequence, and stir at room temperature for 20 minutes to obtain a uniformly dispersed mixed solution;

[0049] (2)-(5) are with embodiment 1; Promptly obtain SrZrO 3 Hollow nanoparticle material.

[0050] After testing, the material SrZrO obtained in this example 3 Characteristic peaks of hollow nanocage samples and perovskite structure SrZrO 3 standard spectrum Figure 1 To (see Figure 4 ), the nanocage particle size is 100-150nm (see Figure 5 ).

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Abstract

The invention relates to a preparation method of a perovskite type zirconate hollow nano-material, comprising the following steps: 1. under the condition of stirring, 0.001 to 0.005 Mol of perovskite type compound with general form of ABO3 and containing barium or strontium metal compounds at A and zirconium metal compounds at B is dissolved in 20 to 30mL of deionized water, a suitable amount of inorganic alkali is added and stirred for 20 to 60 minutes, the evenly dispersed mixed liquor is obtained; 2. the mixed liquor is put into a polyfluortetraethylene reaction container with the volume of 40mL, sealed and put into a baking oven, the temperature in which is 180 to 220 DEG C, and reacted for 12 to 48 hours; 3. after natural cooling of the reaction product, upper lye is removed, under the condition of magnetic stirring, the deionized water is used to wash the product powder for 30 to 60 minutes; 4. after centrifugal separation, ultrasonic cleaning is carried out for 20 to 40 minutes, then 10 to 30mL of the acetic acid or formic acid is added to wash for 30 to 60 minutes; and 5. after the centrifugal separation, washing by absolute ethyl alcohol and drying in the baking oven at the temperature of 50 to 60 DEG C of the product powder, the target product is obtained.

Description

technical field [0001] The invention relates to a preparation technology of zirconate nanometer material, in particular to a preparation method of perovskite type zirconate hollow nanometer material, and the international patent classification number is proposed to be Int.Cl.C01G 9 / 02(2006.01)I. Background technique [0002] Inorganic hollow nanostructure materials have the characteristics of low density, high specific surface area, high stability, and surface permeability. At the same time, their internal hollow parts can be used as carriers to accommodate guest molecules or large-size objects, resulting in unique properties based on microscopic encapsulation effects. It has extremely broad application prospects in the fields of chemistry, biotechnology, and material science, such as adsorbents, sustained release of microcapsules, carriers for drug delivery, lightweight fillers, shape-selective absorbents, and catalysts or catalyst carriers, etc. aspect. [0003] Hollow na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/00
Inventor 赵永男余建国董正洪苏皓李璐
Owner TIANJIN POLYTECHNIC UNIV
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