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Method for preparing carbon-doped zinc oxide microsphere with multilevel structure

A zinc oxide, microsphere technology, applied in zinc oxide/zinc hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problems of complex process, unfavorable industrialization, harsh conditions, etc., to achieve repeatability Good, short response time, simple operation effect

Active Publication Date: 2015-04-22
JIANGSU XFNANO MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires ethylene glycol as the reaction solvent, and realizes the self-assembly of carbon-doped ZnO nanoparticles through induced polymerization and twinning polar field drive. The conditions are harsh and the process is complicated, which is not conducive to industrialization.

Method used

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  • Method for preparing carbon-doped zinc oxide microsphere with multilevel structure
  • Method for preparing carbon-doped zinc oxide microsphere with multilevel structure
  • Method for preparing carbon-doped zinc oxide microsphere with multilevel structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1: dissolving zinc gluconate in water to obtain a zinc gluconate solution with a concentration of 1.0mol / L;

[0028] Step 2: adopt 1mol / L NaOH solution to adjust the pH value of zinc gluconate solution to 7.0;

[0029] Step 3: Add the zinc gluconate solution after adjusting the pH value into the beaker, and heat it in a water bath at 80°C for ultrasonic treatment, wherein the ultrasonic treatment power is 600W, and the ultrasonic treatment time is 60 minutes;

[0030] Step 4: Add the ultrasonically treated zinc gluconate solution into a microwave digestion tank, then move the microwave digestion tank into a microwave hydrothermal synthesizer, carry out a synthesis reaction at 220°C for 1 hour, and then cool naturally to room temperature to obtain intermediate product;

[0031] Step 5: Centrifuge the intermediate product to obtain a solid, then wash the solid with deionized water and absolute ethanol, and dry to obtain a brown zinc oxide precursor;

[0032] Step 6...

Embodiment 2

[0035] Step 1: dissolving zinc gluconate in water to obtain a zinc gluconate solution with a concentration of 0.1mol / L;

[0036] Step 2: adopt 1mol / L KOH solution to adjust the pH value of zinc gluconate solution to 8.0;

[0037] Step 3: Add the zinc gluconate solution after adjusting the pH value into the beaker, and heat it in a water bath at 75°C for ultrasonic treatment, wherein the ultrasonic treatment power is 200W, and the ultrasonic treatment time is 45 minutes;

[0038] Step 4: Add the ultrasonically treated zinc gluconate solution into a microwave digestion tank, then move the microwave digestion tank into a microwave hydrothermal synthesizer, perform a synthesis reaction at 160°C for 4 hours, and then cool naturally to room temperature to obtain intermediate product;

[0039] Step 5: Centrifuge the intermediate product to obtain a solid, then wash the solid with deionized water and absolute ethanol, and dry to obtain a brown zinc oxide precursor;

[0040] Step 6: ...

Embodiment 3

[0043] Step 1: dissolving zinc gluconate in water to obtain a zinc gluconate solution with a concentration of 0.6mol / L;

[0044] Step 2: adjust the pH value of the zinc gluconate solution to 7.5 by using 1mol / L ammonia water;

[0045] Step 3: Add the zinc gluconate solution after adjusting the pH value into the beaker, and heat it in a water bath at 60°C for ultrasonic treatment, wherein the ultrasonic treatment power is 400W, and the ultrasonic treatment time is 50 minutes;

[0046] Step 4: Add the ultrasonically treated zinc gluconate solution into a microwave digestion tank, then move the microwave digestion tank into a microwave hydrothermal synthesizer, carry out a synthesis reaction at 200°C for 2 hours, and then cool naturally to room temperature to obtain intermediate product;

[0047] Step 5: Centrifuge the intermediate product to obtain a solid, then wash the solid with deionized water and absolute ethanol, and dry to obtain a brown zinc oxide precursor;

[0048] S...

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Abstract

The invention discloses a method for preparing carbon-doped zinc oxide microsphere with a multilevel structure. The method comprises the following steps: dissolving zinc gluconate into water to obtain a zinc gluconate solution; regulating the pH value of the zinc gluconate solution and performing ultrasonic treatment; putting the zinc gluconate solution into a microwave hydrothermal synthesizer to perform synthetic reaction; naturally cooling to room temperature after the reaction is finished, so as to obtain an intermediate product; performing centrifugal separation on the intermediate product to obtain a solid; calcining the solid to obtain the carbon-doped zinc oxide microsphere with the multilevel structure. The zinc oxide microsphere is assembled by nanometer zinc oxide particles, and the diameter of the zinc oxide particles is 30-50nm and the diameter of the zinc oxide microsphere is 1-10 microns. In addition, the prepared carbon-doped zinc oxide microsphere has a multipore loosened structure, is high in specific surface area and high in controllability of carbon doping content, can be used in the fields of photocatalysis of visible light and solar utilization and has application prospect.

Description

technical field [0001] The invention belongs to the technical field of semiconductor material preparation, and in particular relates to a method for preparing carbon-doped zinc oxide microspheres with a multi-level structure. Background technique [0002] ZnO is a new type of direct bandgap semiconductor material. Its forbidden band width is 3.2eV, and the exciton binding energy is 60meV. It has excellent photoelectric properties and can be widely used in light-emitting diodes, photocatalysis, solar cells, and gas sensors. , biosensors and other fields have attracted the attention of scientific and technological workers. In recent years, with the rapid development of nanotechnology, nano-ZnO with different shapes has been prepared by various methods, showing many unique physical and chemical properties. Among them, zinc oxide microspheres with multi-level nanostructures have attracted much attention due to their excellent characteristics such as high specific surface area a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
Inventor 欧阳海波李翠艳黄剑锋曹丽云殷立雄费杰孔新刚王勇
Owner JIANGSU XFNANO MATERIALS TECH CO LTD
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