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Visible light-based hydroxyl radical generator and trapping method

A free radical and hydroxyl technology, applied in the field of hydroxyl radical generators, can solve the problems that are rarely reported, and achieve the effect of reducing losses, reducing harm, and capturing methods quickly and easily

Inactive Publication Date: 2012-08-22
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most current technologies use ultraviolet light, and there are few reports on the photolysis of ozone under visible light conditions.

Method used

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  • Visible light-based hydroxyl radical generator and trapping method
  • Visible light-based hydroxyl radical generator and trapping method
  • Visible light-based hydroxyl radical generator and trapping method

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Embodiment Construction

[0020] In order to better understand the technical solutions of the present invention, specific embodiments are further described below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation mode and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0021] Such as figure 1 As shown, the implementation device of this embodiment includes: a test box 1, an ozone generator 2, an ozone online monitor 3, a light source 4, a petri dish 5, and a fan 6, among which: the ozone generator 2, the light source 4, the petri dish 5 and The fans 6 are respectively fixedly arranged in the test box 1, the light source 4 is fixed above the petri dish 5, the fan 6 is fixedly arranged inside the test box 1 and faces the petri dish 5, and the ozone on-line monitor 3 is located outside the test box 1. ...

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Abstract

The invention belongs to the technical field of ozone sterilization and discloses a visible light-based hydroxyl radical generator and a trapping method. The visible light-based hydroxyl radical generator comprises a testing box, an ozone generator, an ozone online monitor, a light source, a culture dish and a fan, and is characterized in that: the ozone generator, the light source, the culture dish and the fan are respectively fixed in the testing box; the light source is fixed above the culture dish; the fan is fixedly arranged in the testing box and opposite to the culture dish; the ozone online monitor is positioned outside the testing box; and a probe of the ozone online monitor is positioned in the testing box. Under the condition of visible light, ozone is photolyzed to generate hydroxyl radical, and the generated hydroxyl radical is subjected to spin trapping and ESR detection, and the hydroxyl radical generated in the ozone photolyzing process can be accurately detected, and can be analyzed by combining the ESR spectrum.

Description

Technical field [0001] The invention relates to a method in the technical field of ozone sterilization, in particular to a visible light-based hydroxyl radical generating device and a trapping method. Background technique [0002] Hydroxyl radical (·OH) is an important reactive oxygen species, which is composed of hydroxide (OH) - ) Lose an electron to form. Hydroxyl radicals have extremely strong electronic power, that is, oxidation power, with an oxidation potential of 2.8v. Second only to fluorine and higher than ozone, hydrogen peroxide, potassium permanganate, chlorine dioxide, chlorine, etc., it has an excellent sterilization function. Therefore, hydroxyl radicals can be widely used in civil, industrial and other fields, and the generation and detection of hydroxyl radicals are also particularly important. [0003] Commonly used detection methods for hydroxyl radicals include electron spin resonance, fluorescence detection, high performance liquid chromatography and so on. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/12B01D53/76G01N24/00A61L2/14A61L2/20A61L9/015A61L9/22A61L101/10
Inventor 程金平高利利刘元嫄殷永文
Owner SHANGHAI JIAOTONG UNIV
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