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ZnO nanobelt and preparation method thereof

A nanobelt and glass substrate technology, applied in the field of nanomaterials, can solve the problems of long hydrothermal growth cycle and complex formula of zinc oxide nanosheets, and achieve good application prospects, mature preparation equipment, and good dispersion

Inactive Publication Date: 2019-09-06
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current formulation of ZnO nanosheets prepared by hydrothermal method is relatively complicated, and some hydrothermal methods have a long growth period (more than 5 hours) or microwave-assisted

Method used

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  • ZnO nanobelt and preparation method thereof
  • ZnO nanobelt and preparation method thereof
  • ZnO nanobelt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method for ZnO nanobelts, comprising the following steps:

[0027] S1), cleaning the glass substrate, using ethanol and deionized water to ultrasonically clean the glass for 3 times, and drying it with an air gun;

[0028] S2), the preparation of the precursor thin film, transfer the cleaned glass substrate to the high vacuum coating equipment, and evenly place the ZnO powder with a purity of more than 99.9% on the tungsten boat, and then pump the air pressure to less than 5×10 -3 Pa; then slowly increase the evaporation current to 140A within 10 minutes, and evaporate for 10 minutes to obtain an amorphous ZnO precursor film on the glass substrate;

[0029] S3), high-temperature annealing, transfer the prepared precursor film to an annealing furnace, raise the temperature to 600°C at a rate of 10°C / min, and keep it warm for 60 minutes to obtain uniformly distributed ZnO nanobelts on the glass.

[0030] figure 1 with figure 2 Low power and high power sc...

Embodiment 2

[0034] A preparation method for ZnO nanobelts, comprising the following steps:

[0035] S1), cleaning the glass substrate, using ethanol and deionized water to ultrasonically clean the glass for 4 times, and drying it with an air gun;

[0036] S2), the preparation of the precursor thin film, transfer the cleaned glass substrate to the high vacuum coating equipment, and evenly place the ZnO powder with a purity of more than 99.9% on the tungsten boat, and then pump the air pressure to less than 5×10 -3 Pa; then slowly increase the evaporation current to 100A within 8 minutes, and evaporate for 20 minutes to obtain an amorphous ZnO precursor film on the glass substrate;

[0037] S3), high-temperature annealing, transfer the prepared precursor film to an annealing furnace, raise the temperature to 500°C at a rate of 4°C / min, and keep it for 120 minutes to obtain uniformly distributed ZnO nanobelts on the glass.

Embodiment 3

[0039] A preparation method for ZnO nanobelts, comprising the following steps:

[0040] S1), cleaning the glass substrate, using ethanol and deionized water to ultrasonically clean the glass for 5 times, and drying it with an air gun;

[0041] S2), the preparation of the precursor thin film, transfer the cleaned glass substrate to the high vacuum coating equipment, and evenly place the ZnO powder with a purity of more than 99.9% on the tungsten boat, and then pump the air pressure to less than 5×10 -3 Pa; then slowly increase the evaporation current to 120A within 6 minutes, and evaporate for 15 minutes to obtain an amorphous ZnO precursor film on the glass substrate;

[0042] S3), high-temperature annealing, transfer the prepared precursor film to an annealing furnace, raise the temperature to 550°C at a rate of 7°C / min, and keep it for 100 minutes to obtain uniformly distributed ZnO nanobelts on the glass.

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Abstract

The invention provides a ZnO nanobelt and a preparation method thereof. The ZnO nanobelt comprises glass and ZnO nanobelts uniformly distributed on the glass. The preparation method comprises the following steps: washing of the glass, preparation of a precursor film, and high-temperature annealing. The preparation method has the characteristics of simple preparation process, good dispersibility, mature preparation device, and facilitation of reduction of the production cost. In addition, the ZnO nanobelt prepared in the invention have good dispersibility, so the increase of the specific surface area of the nanomaterial is benefited. The ZnO nanobelt prepared in the invention have good application prospects in the fields of photocatalytic degradation and gas sensing.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a ZnO nanobelt and a preparation method thereof. Background technique [0002] Zinc oxide (ZnO) is a third-generation semiconductor material. It has many advantages such as large band gap, good chemical stability, good biocompatibility, and simple preparation method. Its band gap Eg=3.37 at room temperature eV, the exciton binding energy can reach 60meV, which is much higher than GaN's 25meV, so it is favored by researchers. In particular, when zinc oxide is made into nanomaterials, due to its unique volume effect, quantum size effect, surface effect, tunnel effect, piezoelectric effect, and photocatalytic properties, nano-zinc oxide materials are expected to be used in optics, electricity, and biology. Play an active role in fields such as medicine. Therefore, the controllable preparation of ZnO nanomaterials has always been a hot spot in material research in this field....

Claims

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Application Information

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IPC IPC(8): C03C17/245
CPCC03C17/245C03C2217/216C03C2217/71C03C2218/151C03C2218/17C03C2218/31C03C2218/32
Inventor 杨为家刘俊杰刘铭全何鑫陈柏桦
Owner WUYI UNIV
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