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Magnetic chitosan microsphere/zinc oxide composite antibacterial agent and preparation method thereof

A technology of chitosan microspheres and compound antibacterial agent, which is applied in the fields of botanical equipment and methods, biocides, disinfectants, etc., can solve the problems of small carrier load, difficult recovery, poor carrier activity, etc., and achieves easy recovery, Large specific surface area and the effect of increasing the loading of zinc oxide

Inactive Publication Date: 2018-01-12
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems of ZnO antibacterial agent carrier loading capacity is small, recovery is difficult, and the activity of carrier itself is poor, the purpose of the present invention is to provide a kind of magnetic chitosan microsphere / zinc oxide composite antibacterial agent and preparation method thereof, the obtained The magnetic chitosan microspheres / zinc oxide composite antibacterial agent is magnetic, which provides the possibility for the future development of automatic recovery devices for antibacterial agents

Method used

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  • Magnetic chitosan microsphere/zinc oxide composite antibacterial agent and preparation method thereof
  • Magnetic chitosan microsphere/zinc oxide composite antibacterial agent and preparation method thereof
  • Magnetic chitosan microsphere/zinc oxide composite antibacterial agent and preparation method thereof

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Embodiment Construction

[0029] The applicant's technical idea is to combine the superior antibacterial performance of ZnO with the characteristics of high adsorption, high loading capacity and easy recovery of magnetic chitosan microspheres, so as to obtain a new antibacterial agent with excellent performance. Prepare magnetic chitosan microspheres by one-step precipitation method, place the magnetic chitosan microspheres in zinc solution, add a certain concentration of NaOH solution, control the temperature and stirring conditions, and carry out chemical deposition reaction. After the reaction is completed, After the solution is naturally cooled, washed with pure water, and dried at 95°C, a millimeter-sized magnetic chitosan microsphere / zinc oxide composite antibacterial agent is obtained.

[0030] The specific implementation process is as follows:

[0031] 1. Equipment and reagents

[0032] (1) Scanning electron microscope

[0033] (2) X-ray diffractometer

[0034] (3) Flame atomic absorption sp...

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Abstract

The invention discloses a magnetic chitosan microsphere / zinc oxide composite antibacterial agent. A preparation method comprises the following steps: taking magnetic chitosan microspheres prepared byusing a one-step precipitation method as a carrier, putting the magnetic chitosan microspheres into a Zn(Ac)2.2H2O solution, adding an NaOH solution with a certain concentration, controlling the temperature and stirring, and carrying out a chemical deposition reaction to obtain the magnetic chitosan microsphere / zinc oxide composite antibacterial agent. The surface of the composite antibacterial agent is loaded with a large amount of nanometer granular zinc oxide, the composite antibacterial agent is high in inactivation ratio for bacteria in water and lasting in effect, and the composite antibacterial agent is of magnetism and is convenient to recycle.

Description

technical field [0001] The invention belongs to the technical field of material preparation and environmental protection, and in particular relates to a magnetic chitosan microsphere / zinc oxide composite antibacterial agent and a preparation method thereof. Background technique [0002] With the improvement of health and environmental awareness, people are increasingly pursuing non-toxic and harmless antibacterial materials and methods. Compared with traditional water treatment disinfectants, the new antibacterial agent has the advantages of no chemical residues, no disinfection by-products, and no drug-resistant bacteria. It can be applied to drinking water source purification, water supply and distribution pipeline network sterilization, circulating water System sterilization and other fields have rapidly become a hot spot in recent years. [0003] Zinc oxide (ZnO) is an inorganic antibacterial agent with good antibacterial properties under light and dark conditions. It i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N59/16A01N43/16A01N25/10A01P1/00
Inventor 张崇淼温银梅
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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