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A kind of zno/c hollow microsphere and preparation method thereof

A microsphere and hollow technology, applied in the field of materials, can solve the problems of zinc oxide hollow microspheres, such as complicated process, harsh experimental conditions, and unsuitable for mass production, so as to improve the efficiency of electrochemical reaction and the performance of batteries, low cost, Uniform and controllable effect

Inactive Publication Date: 2020-05-08
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention provides a ZnO / C hollow microsphere and a preparation method thereof, which solves the problem that the process of preparing zinc oxide hollow microspheres in the prior art is complicated, the experimental conditions are harsh and the yield is not high, and it is not suitable for mass production. technical issues

Method used

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  • A kind of zno/c hollow microsphere and preparation method thereof
  • A kind of zno/c hollow microsphere and preparation method thereof
  • A kind of zno/c hollow microsphere and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] (1) Weigh 2g of sodium alginate into a beaker, then add 200mL of deionized water, fully stir and dissolve at room temperature for later use.

[0039] (2) Weigh 2gZnCl 2 Add it to another beaker, add 200mL deionized water as well, stir until it is completely dissolved and set aside.

[0040] (3) Transfer the sodium alginate aqueous solution prepared in step (1) to a 500mL disposable medical infusion set, and drop it into the ZnCl 2 in the solution with continuous stirring to obtain translucent chelate precursor microspheres. After the dropwise addition is completed, the solution is continuously stirred for 4-5 hours, filtered with suction, and washed with deionized water for 3 times.

[0041] (4) The translucent chelate precursor microspheres prepared in step (3) were hydrothermally reacted in a hydrothermal kettle at 140° C. for 5 hours to obtain ZnO / C hollow microspheres.

[0042] figure 1 For the SEM figure (bar=500um) of the ZnO / C hollow microsphere that embodimen...

Embodiment 2

[0044] (1) Weigh 2g of sodium alginate into a beaker, then add 200mL of deionized water, fully stir and dissolve at room temperature and set aside.

[0045] (2) Weigh 2g of ZnCl 2 Add it to another beaker, add 200mL deionized water, stir until it is completely dissolved and set aside.

[0046] (3) Transfer the aqueous solution of sodium alginate prepared in step (1) to a 500mL disposable medical infusion set, and drop it into the ZnCl 2 solution with continuous stirring to obtain translucent chelate precursor microspheres. After the dropwise addition was completed, the stirring was continued for 4-5 hours, and then it was suction-filtered and washed 3 times with deionized water.

[0047] (4) The translucent chelate precursor microspheres prepared in step (3) were hydrothermally reacted in a hydrothermal kettle at 160° C. for 5 hours to obtain ZnO / C hollow microspheres.

[0048] image 3 For the SEM figure (bar=500um) of the ZnO / C hollow microspheres prepared in embodiment 2,...

Embodiment 3

[0050] (1) Weigh 2g of sodium alginate into a beaker, then add 200mL of deionized water, stir and dissolve at room temperature for later use, if the dissolution rate is too slow, heat it appropriately to make it dissolve quickly.

[0051] (2) Weigh 2g of ZnCl 2 Add it to another beaker, add 200mL deionized water as well, stir until it is completely dissolved and set aside.

[0052] (3) Transfer the aqueous solution of sodium alginate prepared in step (1) to a 500mL disposable medical infusion set, and drop it into the ZnCl 2 solution with continuous stirring to obtain translucent chelate precursor microspheres. After the dropwise addition was completed, the stirring was continued for 4-5 hours, and then it was suction-filtered and washed 3 times with deionized water.

[0053] (4) The translucent chelate precursor microspheres prepared in step (3) were hydrothermally reacted in a hydrothermal kettle at 180° C. for 5 hours to obtain ZnO / C hollow microspheres.

[0054] Figur...

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Abstract

The invention belongs to the technical field of materials and particularly relates to a ZnO / C hollow microsphere and a preparation method thereof. The preparation method of the provided ZnO / C hollow microsphere includes the following steps of 1, dropwise adding a sodium alginate aqueous solution into a soluble zinc salt solution to obtain a chelate precursor microsphere; 2, obtaining the chelate precursor microsphere prepared in step 1 to make the chelate precursor microsphere subjected to a hydrothermal reaction to obtain the ZnO / C hollow microsphere. The provided preparation method is simple, easy to operate, low in cost and suitable for batched industrial production. The ZnO / C hollow microsphere prepared according to the method is uniform in size, the size can be effectively adjusted and controlled according to experimental parameters, and the shape and appearance of the precursor microsphere are completely maintained. The ZnO / C hollow microsphere can be widely used for catalyzation, gas adsorption, separation of oil and water, electrode materials of lithium ion batteries and other domains.

Description

technical field [0001] The invention belongs to the field of material technology, in particular to a ZnO / C hollow microsphere and a preparation method thereof Background technique [0002] Zinc oxide is a wide-bandgap semiconductor material with a wide range of uses. It is widely used in important industrial and technical fields such as catalysis, gas adsorption, oil-water separation, and electrode materials for lithium-ion batteries. Among them, nano-scale zinc oxide has become one of the hot spots in the field of nanomaterial preparation in recent years due to its important application value and novel characteristics. Researchers have synthesized ZnO in many shapes, including nanowires, nanorods, nanocables, nanoribbons, nanotubes, and dandelion-like shapes. Among the many morphologies of zinc oxide, the hollow microsphere structure has broad application prospects in the fields of catalyst supports, microreactors, etc. due to its low density, high specific surface area, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02C01B32/05
CPCC01G9/02C01P2002/72C01P2002/88C01P2004/03C01P2004/34C01P2004/80
Inventor 李兆鹏李争晖钟威豪李柳青
Owner GUANGDONG UNIV OF TECH
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