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Flower-like spherical calcium molybdate preparation method

A calcium molybdate, curd-shaped technology, applied in chemical instruments and methods, molybdenum compounds, inorganic chemistry, etc., to achieve excellent performance, easy access to raw materials, and convenient operation

Inactive Publication Date: 2017-03-29
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although some people have synthesized CaMoO with different morphologies by hydrothermal method, microwave method, microemulsion method, etc. 4 , but the uniform CaMoO with special morphology was synthesized by a facile method 4 Nanomaterials remain a major challenge

Method used

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  • Flower-like spherical calcium molybdate preparation method
  • Flower-like spherical calcium molybdate preparation method
  • Flower-like spherical calcium molybdate preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of flower spherical calcium molybdate, comprising the steps of:

[0021] (1) Take a certain amount of calcium chloride and 0.006g EDTA in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0022] (2) Take a certain amount of sodium molybdate in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0023] (3) Sodium molybdate solution is poured in the beaker that fills calcium chloride solution;

[0024] (4) Continue to magnetically stir the solution for 15 minutes, then move it to an ultrasonic cleaner and ultrasonicate for half an hour;

[0025] (5) The obtained precipitate was washed three times with distilled water and ethanol respectively, and dried in an oven at 60° C. for 6 hours to obtain flower-shaped calcium molybdate.

[0026] The prepared product was observed by scanning electron microscope, and the figure 1 It can be seen that the obtained calcium molybdate is in the...

Embodiment 2

[0028] A preparation method of flower spherical calcium molybdate, comprising the steps of:

[0029] (1) Take a certain amount of calcium chloride and 0g EDTA in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0030] (2) Take a certain amount of sodium molybdate in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0031] (3) Sodium molybdate solution is poured in the beaker that fills calcium chloride solution;

[0032] (4) Continue to magnetically stir the solution for 15 minutes, then move it to an ultrasonic cleaner and ultrasonicate for half an hour;

[0033] (5) The obtained precipitate was washed three times with distilled water and ethanol respectively, and dried in an oven at 60° C. for 6 hours to obtain flower-shaped calcium molybdate.

Embodiment 3

[0035] A preparation method of flower spherical calcium molybdate, comprising the steps of:

[0036] (1) Weigh a certain amount of calcium chloride and 0.012g EDTA in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0037] (2) Take a certain amount of sodium molybdate in a beaker, add an appropriate amount of distilled water, and fully magnetically stir;

[0038] (3) Sodium molybdate solution is poured in the beaker that fills calcium chloride solution;

[0039] (4) Continue to magnetically stir the solution for 15 minutes, then move it to an ultrasonic cleaner and ultrasonicate for half an hour;

[0040] (5) The obtained precipitate was washed three times with distilled water and ethanol respectively, and dried in an oven at 60° C. for 6 hours to obtain flower-shaped calcium molybdate.

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Abstract

The present invention discloses a method for preparing flower-like spherical calcium molybdate by chelating a chelating agent ethylenediaminetetraacetic acid (EDTA) and Ca<2+>. The method comprises: using calcium chloride and sodium molybdate as raw materials, respectively adding a certain amount of distilled water, carrying out magnetic stirring to uniformly mix, pouring the sodium molybdate into the calcium chloride solution during the stirring, continuously stirring for 15 min, carrying out an ultrasonic reaction for half an hour, centrifugating the precipitate, washing, and drying to obtain the flower-like spherical calcium molybdate. According to the present invention, the used raw materials such as calcium chloride, sodium molybdate, EDTA and the like are cheap and easy to obtain, the ultrasonic operation is easily performance, and the requirement on the equipment is low; and the prepared flower-like spherical calcium molybdate has advantages of large specific surface area and good photoluminescence property.

Description

technical field [0001] The invention belongs to the technical field of synthesis of micro-nano materials, and in particular relates to a flower-shaped calcium molybdate and a preparation method thereof. Background technique [0002] Since the new century, people have paid more and more attention to functional materials. From the perspective of the synthesis of inorganic nanomaterials, it is not only the physical and chemical properties of the basic particles that make up the material that determine the function of the material, but also the way in which these basic particles construct the material. Materials constructed of the same molecule in different ways may show great differences in crystallinity, geometric shape, size, internal and surface composition and structure, etc., resulting in great differences in the properties of materials. s difference. Therefore, existing elements can be used to react and synthesize under various conditions to prepare inorganic nanomateri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G39/00
Inventor 王立敏张永方王振凤王立鹏储德清
Owner TIANJIN POLYTECHNIC UNIV
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