Visible light-based hydroxyl radical generator and trapping method

A technology for generating devices and free radicals, applied in measurement devices, water supply devices, separation methods, etc., can solve problems such as few reports, and achieve the effects of reducing losses, wide industrial application value, and fast and simple capture methods.

Inactive Publication Date: 2011-01-12
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 will be further described below in conjunction with the accompanying drawings. This embodiment is carried out on the premise of the technical solution of the present invention, and the detailed implementation 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 online ozone monitor 3, a light source 4, a petri dish 5 and a fan 6, wherein: an ozone generator 2, a light source 4, a petri dish 5 and The fans 6 are respectively fixed in the test box 1, the light source 4 is fixed above the petri dish 5, the fan 6 is fixed inside the test box 1 and facing the petri dish 5, and the ozone online monitor 3 is located outside the test box 1 And the probe of the ozone o...

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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 active oxygen, which is composed of hydroxide (OH) from the molecular formula - ) loses an electron to form. Hydroxyl radicals have a very strong electronic ability, that is, oxidation ability, with an oxidation potential of 2.8v. Second only to fluorine, it is higher than ozone, hydrogen peroxide, potassium permanganate, chlorine dioxide, chlorine, etc., and has excellent bactericidal function. Therefore, hydroxyl radicals can be widely used in civil and industrial fields, and the generation and detection of hydroxyl radicals are particularly important. [0003] Common detection methods for hydroxyl radicals include electron spin resonance, fluorescence detection, high performance liquid chromatography, and...

Claims

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Application Information

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Patent Type & Authority Applications(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 JIAO TONG UNIV
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