Preparation method for spherical thorium dioxide nano material with sheet-shaped surface structure and spherical thorium dioxide particles obtained from preparation method

A thorium dioxide, surface structure technology, applied in chemical instruments and methods, nanotechnology, inorganic chemistry and other directions, to achieve the effects of good reproducibility, low cost, and easy industrial production

Active Publication Date: 2018-05-29
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And so far, there is no reported case of using microwave-assisted hydrothermal method to prepare nano-thorium oxide with special shape.

Method used

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  • Preparation method for spherical thorium dioxide nano material with sheet-shaped surface structure and spherical thorium dioxide particles obtained from preparation method
  • Preparation method for spherical thorium dioxide nano material with sheet-shaped surface structure and spherical thorium dioxide particles obtained from preparation method
  • Preparation method for spherical thorium dioxide nano material with sheet-shaped surface structure and spherical thorium dioxide particles obtained from preparation method

Examples

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Effect test

Embodiment 1

[0035]A preparation method of a spherical thorium dioxide nanomaterial with a sheet-like surface structure is carried out according to the following steps:

[0036] S1, add 2mmol Th(NO 3 ) 4 ·6H 2 O was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasound, and stirred to form a uniform and transparent solution;

[0037] S2, 3mmol of urea (CO(NH 2 ) 2 ) was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasonic, and stirred to form a uniform and transparent solution;

[0038] S3, transfer the thorium nitrate solution in step S1 and the urea solution in step S2 to a clean 100mL polytetrafluoro reactor, tighten the lid, and put on the outer tank;

[0039] S4, the reactor in step S3 is placed in a microwave reactor, the reaction temperature is selected to be 180°C, the microwave power is 600W, and the reaction is heated for 60min; Washed twice with water and ethanol;

[0040] S5, drying the precipit...

Embodiment 2

[0043] A preparation method of a spherical thorium dioxide nanomaterial with a sheet-like surface structure is carried out according to the following steps:

[0044] S1, add 2mmol Th(NO 3 ) 4 ·6H 2 O was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasound, and stirred to form a uniform and transparent solution;

[0045] S2, 3mmol of urea (CO(NH 2 ) 2 ) was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasonic, and stirred to form a uniform and transparent solution;

[0046] S3, transfer the thorium nitrate solution in step S1 and the urea solution in step S2 to a clean 100mL polytetrafluoro reactor, tighten the lid, and put on the outer tank;

[0047] S4, the reactor in step S3 is placed in a microwave reactor, the reaction temperature is selected to be 200°C, the microwave power is 400W, and the reaction is heated for 60 minutes; after the reaction is completed, cool down, collect the microwave...

Embodiment 3

[0050] A preparation method of a spherical thorium dioxide nanomaterial with a sheet-like surface structure is carried out according to the following steps:

[0051] S1, add 3mmol Th(NO 3 ) 4 ·6H 2 O was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasound, and stirred to form a uniform and transparent solution;

[0052] S2, 3mmol of urea (CO(NH 2 ) 2 ) was dissolved in 10ml of deionized water under stirring at room temperature or under ultrasonic, and stirred to form a uniform and transparent solution;

[0053] S3, transfer the thorium nitrate solution in step S1 and the urea solution in step S2 to a clean 100mL polytetrafluoro reactor, tighten the lid, and put on the outer tank;

[0054] S4, the reactor in step S3 is placed in a microwave reactor, the reaction temperature is selected to be 180°C, the microwave power is 800W, and the reaction is heated for 60min; Washed 3 times with water and ethanol;

[0055] S5, the precipitate ...

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Abstract

The invention provides a preparation method for a spherical thorium dioxide nano material with a sheet-shaped surface structure. The preparation method comprises the following steps: dissolving thorium nitrate into water to form a thorium nitrate solution; dissolving urea into water to form a urea solution; transferring the thorium nitrate solution and the urea solution into a reaction kettle, wherein a molar ratio of thorium to urea is 1 to (1-10); putting the reaction kettle into a microwave reactor, selecting a reaction temperature of 120-200 DEG C to perform heating reaction for 30-60 minutes, centrifugally separating microwave products obtained in the reaction kettle to obtain precipitates; and drying the precipitates to obtain the spherical thorium dioxide nano material with the sheet-shaped surface structure. The invention further provides spherical thorium dioxide particles prepared from the method. In a word, the preparation method provided by the invention is simple in process and is good in reproducibility; and moreover, used raw materials are inorganic compounds, are cheap and easily available, are relatively low in cost, are environmentally friendly, and are easy for industrial production.

Description

technical field [0001] The invention belongs to the technical field of preparation technology of rare earth oxide materials with special morphology, and more specifically relates to a preparation method of spherical thorium dioxide nanomaterials with sheet-like surface structure and spherical thorium dioxide particles obtained therefrom. Background technique [0002] There are many ways to prepare nano-rare earth oxide materials. The commonly used hydrothermal method is a relatively high temperature and high pressure liquid phase reaction in a closed container, which makes the material react, grow, and nucleate at a certain temperature and pressure to prepare a special shape. of nanomaterials. Such materials generally have the characteristics of high surface area and high activity and are widely used in adsorption and catalysis. Nano-thorium oxide also has the above-mentioned applications, but the current research on the preparation of nano-thorium oxide by hydrothermal met...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F15/00B82Y40/00
CPCC01F15/00C01P2002/72C01P2004/04C01P2004/36C01P2004/64
Inventor 崔荣荣窦强刘艳成王晨阳程治强李晴暖
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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