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Photocatalysis separation film performance test device and its test method

A technology of photocatalytic separation membrane and testing device, which is applied in the field of photocatalytic separation membrane performance testing device, can solve the problems of inability to test the performance of photocatalytic separation membrane, inability to perform real-time online evaluation, complicated operation steps, etc., and achieve a scientific and feasible testing method. , The measured data is true and reliable, and the effect of extending the light receiving range

Inactive Publication Date: 2008-07-16
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, both the evaluation method and the device for realizing the method have shortcomings. First, only the photocatalytic performance of the nanopowder material can be tested, but the performance of the photocatalytic separation membrane cannot be tested; secondly, , the operation steps are complicated and error-prone; finally, the degree of automation is low, and it cannot be evaluated online in real time

Method used

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  • Photocatalysis separation film performance test device and its test method
  • Photocatalysis separation film performance test device and its test method
  • Photocatalysis separation film performance test device and its test method

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Embodiment 1: Complete the test in sequence according to the following steps: a) According to the purpose of testing the activity of the titanium dioxide photocatalytic separation membrane to degrade the liquid phase methylene blue, after preparing a 20 μmol / L methylene blue solution, place it in the container of the test object. b) The detector is selected as an ultraviolet-visible spectrophotometer, which is used to test the concentration of the methylene blue solution after the reaction. c) installing the photocatalytic separation membrane to be tested between the connected container of the degraded substance and the reactant container, and isolating them. Confirm that the light source is ultraviolet light, its wavelength is selected as 365nm, and the photon flux is selected as 6.94×10 per second -7 Mole photons, the ultraviolet light source is installed on one side of the container of the to-be-degraded product, and is arranged in parallel with the photocatalytic se...

Embodiment 2

[0017] Embodiment 2: Complete the test in sequence according to the following steps: a) According to the purpose of testing the activity of titanium dioxide photocatalytic separation membrane to degrade phenol in the liquid phase, a 20 mg / L phenol solution is prepared and then placed in the container to be tested. b) The detector is selected as an ultraviolet-visible spectrophotometer, which is used to test the concentration of the phenol solution after the reaction. c) installing the photocatalytic separation membrane to be tested between the connected container of the degraded substance and the reactant container, and isolating them. Determine that the light source is ultraviolet light, its wavelength is selected as 254nm, and the photon flux is selected as 8.02×10 per second -7 Mole photons, the ultraviolet light source is installed on one side of the container of the to-be-degraded product, and is arranged in parallel with the photocatalytic separation membrane. d) Accord...

Embodiment 3

[0018] Example 3: The test was completed in sequence according to the following steps: a) According to the purpose of testing the activity of the titanium dioxide photocatalytic separation membrane to degrade formaldehyde in the gas phase, 5 μmol / L of formaldehyde gas was prepared and placed in the container of the test object. b) The detector is selected as a special gas detector for formaldehyde, which is used to test the concentration of formaldehyde gas after the reaction. c) installing the photocatalytic separation membrane to be tested between the connected container of the degraded substance and the reactant container, and isolating them. Determine that the light source is ultraviolet light, its wavelength is selected as 254nm, and the photon flux is selected as 6.94×10 per second -7 Mole photons, the ultraviolet light source is installed on one side of the container of the to-be-degraded product, and is arranged in parallel with the photocatalytic separation membrane. ...

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Abstract

The invention discloses a photocatalysis separating film performance detecting device and the detecting method. The device relates to a photocatalysis separating film (3) which is positioned between a container of an object to be degraded (2), the inlet of which is connected with a flow sensor (10), an electromagnetic regulating valve (11), a pressure increasing and reducing device (12) and a container of an object to be detected (13) in turn and a reagent container (6), the outlet of which is connected with a detector (4); an optical source (1) is arranged in parallel with the photocatalysis separating film (3); the flow sensor (10), the electromagnetic regulating valve (11), the pressure increasing and reducing device (12) and the detector (4) are all electrically connected with a computer (8); the method includes preparing a fluid, selecting the detector, confirming the optical source, controlling the degrading process by the computer and calculating the photocatalysis quanta efficiency and the absorption amount of the photocatalysis separating film according to a formula of Rho is equal to r / Phi and an absorption curve through the concentration of the fluid and the data detected by the detector; thereby obtaining the performance of the photocatalysis separating film. The invention can automatically and comprehensively detect the performance of the photocatalysis separating film.

Description

technical field [0001] The invention relates to a test device and a test method, in particular to a photocatalytic separation membrane performance test device and a test method. Background technique [0002] Photocatalytic technology can make full use of the inexhaustible and inexhaustible solar energy, decompose water to generate hydrogen, degrade a series of organic compounds and some such as bacteria and germs at normal temperature and pressure without consuming other energy and materials. , viruses and other microorganisms, thus effectively solving the two problems of renewable energy and environmental pollution faced by the sustainable development of society. As the material basis for realizing photocatalytic technology, the performance of photocatalyst plays a decisive role. Before its practical application, if the performance index of photocatalyst can be known quantitatively, it will be very beneficial to give full play to its effectiveness. For this reason, people ...

Claims

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Application Information

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IPC IPC(8): G01N31/10B01J19/12
Inventor 胡科研崔平李勇
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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