Preparation method of flower cluster-shaped zinc oxide hybrid material based on cellulose nanosphere crystal as template

A hybrid material, nanosphere technology, applied in zinc oxide/zinc hydroxide, nanotechnology for materials and surface science, nanotechnology, etc., can solve problems such as insufficient controllability, high temperature requirements, and lack of performance , to achieve the effect of strong catalytic ability and antibacterial property, simple and easy preparation process, and overcoming poor adsorption capacity.

Inactive Publication Date: 2015-12-02
ZHEJIANG SCI-TECH UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] Among them, taking molecular beam epitaxy as an example, the cost of electrochemical method is generally too high, and it is not suitable for large-scale production; while the nano-zinc oxide prepared by ordinary physical method has a large difference in particle size and no uniform shape. It is lacking in various performances; chemical vapor deposition is a relatively good method, but it needs to be improved in terms of controllability of nanostructures; thermal evaporation method is relatively low in cost, easy to operate and capable of preparing a variety of Therefore, it is one of the main methods to prepare ZnO nanostructures, but its disadvantages are: high temperature requirements and insufficient controllability
The hydrothermal method is a method with high controllability, but large-scale use requires high equipment and equipment, and there are potential safety hazards
Each of these preparation methods has advantages and disadvantages

Method used

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  • Preparation method of flower cluster-shaped zinc oxide hybrid material based on cellulose nanosphere crystal as template
  • Preparation method of flower cluster-shaped zinc oxide hybrid material based on cellulose nanosphere crystal as template

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Stir 31.25 parts by weight of the suspension of cellulose nanospherulites thoroughly, ultrasonically treat for 10 minutes, and mix with a solution of 6.25 parts by weight of zinc nitrate and 62.5 parts by weight of deionized water, and stir thoroughly; mix the mixed solution with concentrated ammonia (6mol / L) Adjust the pH value to 11.0, then fully stir for 15min; transfer to an oil bath, stir and heat to 100°C, condense and reflux, and react at constant temperature for 2h.

[0022] The above reaction solution was cooled to room temperature, filtered and washed with water for 3 times, and transferred to an oven at 80°C for 20 hours. The product obtained was figure 1 It can be seen that the morphology is a flower cluster-like zinc oxide hybrid particle, and the diameter of the nanorods forming the flower cluster is about 50-100 nm.

Embodiment 2

[0024] Stir 31.25 parts by weight of the suspension of cellulose nanospherulites fully, ultrasonically treat for 11 minutes, and mix with 6.25 parts by weight of zinc nitrate and 62.5 parts by weight of deionized water, and stir thoroughly; mix the mixed solution with concentrated ammonia (6mol / L) Adjust the pH value to 11.2, then fully stir for 18min; transfer to an oil bath, stir and heat to 115°C, condense and reflux, and react at constant temperature for 2.5h.

[0025] The above reaction solution was cooled to room temperature, filtered and washed with water for 3 times, and transferred to an oven at 100°C for 5 hours. According to figure 2 It can be seen that the XRD pattern shows new absorption peaks at 31.7°, 34.3°, 36.2°, 47.5°, 56.4°, 62.8°, 67.7°, and 69.1°, which correspond to the hexagonal wurtzite of zinc oxide The structure is the plane at (100), (002), (101), (102), (110), (103), (112).

Embodiment 3

[0027] Stir 31.25 parts by weight of the suspension of cellulose nanospherulites fully, ultrasonically treat for 15 minutes, and mix with 6.25 parts by weight of zinc nitrate and 62.5 parts by weight of deionized water, and stir thoroughly; mix the mixed solution with concentrated ammonia (6mol / L) The pH value was adjusted to 10.89, and then fully stirred for 28min; transferred to an oil bath, stirred and heated to 128°C, condensed and refluxed, and reacted at constant temperature for 1.5h.

[0028] The above reaction solution was cooled to room temperature, filtered and washed with water for 3 times, and transferred to an oven at 90°C for 15h.

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Abstract

The invention relates to a preparation method of a flower cluster-shaped zinc oxide hybrid material based on a cellulose nanosphere crystal as a template. The preparation method utilizes a cellulose nanosphere crystal as a template, a soluble zinc salt as a zinc source and an alkali solution as a pH conditioning agent for adjusting solution pH to 10.5-13, and comprises the following steps of stirring the template and the zinc source, heating the mixture to a temperature of 100-140 DEG C to obtain white precipitates, carrying out suction filtration on the white precipitates, carrying out water washing, putting the white precipitates into an oven at a temperature of 60-120 DEG C, and carrying out drying for 1-24h to obtain the flower cluster-shaped hybrid material which utilizes a cellulose nanosphere crystal as a template and comprises zinc oxide nanometer rods. The preparation method is simple, can be operated easily, does not pollute the environment, and is suitable for industrial large-scale production. The hybrid material has small and controllable particle sizes, a high degree of crystallization, good dispersibility, less surface defects, excellent bactericidal effect and dye degradation performances and a wide application range in the field of water purification, medical materials and dye treatment.

Description

technical field [0001] The invention relates to a preparation method of a nano flower cluster zinc oxide hybrid material, in particular to a preparation method of a flower cluster zinc oxide hybrid material based on cellulose nano spherulites as a template. Background technique [0002] Zinc oxide is a semiconductor material with a wide bandgap, and its bulk material is widely used in optoelectronics and optical storage fields such as light-emitting diodes, sensors, and detectors. As a new type II-IV group material, it has high electrical conductivity, thermal conductivity, chemical stability and good ultraviolet absorption capacity. So far, there have been many chemical, physical and electrochemical preparation methods, among which the physical method is mainly pulverization method and physical vapor deposition method, and the chemical method is the most important method for preparing nanomaterials, which can prepare almost all kinds of nanomaterials. Nanoparticles, by con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G9/02B82Y30/00B82Y40/00
Inventor 余厚咏姚菊明阳仁彤宋美丽张彩虹
Owner ZHEJIANG SCI-TECH UNIV
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