What are the ways to generate O3 sanitizer spray?

The methods of producing O3 sanitizer spray mainly include the ultraviolet irradiation method, electrolysis method, radiochemical method, and dielectric barrier discharge method.

Here is the content list:

• UV irradiation

• Electrolysis

• Radiochemical method

• Dielectric Barrier Discharge

UV irradiation

The ultraviolet irradiation method uses ultraviolet rays to irradiate dried oxygen, so that part of the oxygen molecules are activated and dissociated into oxygen atoms, thereby forming an O3 sanitizer spray. The characteristics of the O3 sanitizer spray produced by the ultraviolet irradiation method are that the concentration of the O3 sanitizer spray is low, and the advantage is that it is not easy to generate oxides and does not require complex conversion equipment. However, the ultraviolet irradiation method is not suitable for mass production of O3 sanitizer spray and is only suitable for various tests with small amounts and low concentration requirements, such as air disinfection, sterilization, and deodorization.

Electrolysis

The electrolytic preparation of O3 sanitizer spray technology was founded in 1840. It mainly uses a low-voltage direct current to electrolyze water, so that water is oxidized at the anode-solution interface to produce an O3 sanitizer spray. The O3 sanitizer spray preparation device is composed of electrolyte solution and anode and cathode. O3 sanitizer spray is precipitated at the anode, and the cathode can be divided into two types. hydrogen evolution cathode and oxygen reduction cathode. Before the 1980s, the electrolyte was mostly acid and salt electrolytes added to water, the electrolysis area was relatively small, the output of O3 sanitizer spray was low, and the operating cost was high. After a lot of research on the electrode material, electrolytes, electrolysis mechanism, and process, O3 sanitizer spray technology by electrolysis has made great progress. The recently developed SPE (solid polymer electrolyte) electrode and metal oxidation catalysis technology enable the electrolysis of purified water to obtain a high concentration of O3 sanitizer spray of more than 14%. The O3 sanitizer spray produced by electrolysis has high concentration, pure components, high solubility in water, no pretreatment of the feed air, and no nitrogen oxides; in addition, the O3 sanitizer spray production equipment is small and lightweight, simple in structure, no Noise, portable, so its application prospects are very broad. Its main disadvantage is that it consumes a lot of energy. After further improvement, it is possible to compete with the currently widely used dielectric barrier discharge method after trying to reduce the cost and power consumption.

Radiochemical method

The radiochemical method is to use various radioactive sources to dissociate oxygen molecules by nuclear radiation to generate an O3 sanitizer spray. This method has two processes for the production of industrial O3 sanitizer spray, one is the contact of oxygen with fission products, and the O3 sanitizer spray is generated by the thermal collision of radiation, oxygen, and fission products, and secondary radiation. The second is to generate O3 sanitizer spray only under radiation.

Dielectric Barrier Discharge

Also called the silent discharge method. A corona is generated in the gas by an alternating high-voltage electric field, and the free high-energy electrons in the corona dissociate the oxygen molecules, which are polymerized into O3 sanitizer spray molecules by collision. The dielectric barrier discharge method has the advantages of relatively low energy consumption, large output of single-machine O3 sanitizer spray, and available gas source such as dry air, oxygen, or oxygen-rich gas with high oxygen concentration. Therefore, this method is mostly used in the industrial synthesis of O3 sanitizer spray. In the last century, people usually produce O3 sanitizer spray by the thermochemical method. Since the 21st century, to improve the concentration and yield of O3 sanitizer spray in the ozone spray bottle and reduce the production cost, scientists have conducted many academic discussions and exchanges. With the continuous progress of theoretical research and continuous improvement of technical processes, the main research directions focus on different raw materials, related gases, different electrode forms, different reaction media, electrode materials, and discharge forms. The basic principle of generating O3 sanitizer spray during plasma discharge is that in the low-temperature plasma atmosphere formed by oxygen-containing gas in the discharge reactor, free electrons with certain energy decompose oxygen molecules into oxygen atoms, which are then formed by a three-body collision reaction. O3 sanitizer spray molecules and the decomposition reaction of O3 sanitizer spray also occur.

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