Photocatalysis separation film performance test device and its test method

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

Inactive Publication Date: 2009-09-09
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 the titanium dioxide photocatalytic separation membrane to degrade liquid phase phenol, prepare a 20 mg / L phenol solution and place it in the sample container. 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) According to the 0.5m ...

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 photocatalytic separation membrane performance test device and a test method thereof. The device is a photocatalytic separation membrane (3) which is placed at the inlet and is sequentially connected with a flow sensor (10), an electromagnetic regulating valve (11), a pressure increaser (12) and a sample container (13). 2) Between the reactant container (6) connected with the detector (4) at the outlet, the light source (1) is arranged in parallel with the photocatalytic separation membrane (3), the flow sensor (10), the electromagnetic regulating valve (11), Both the pressure increaser (12) and the detector (4) are electrically connected to the computer (8); the method includes preparing the fluid, selecting the detector, determining the light source, controlling the photodegradation process by the computer, and measuring the temperature according to the concentration of the fluid and the detector. According to the obtained data, the photocatalytic quantum efficiency and adsorption capacity of the photocatalytic separation membrane are calculated according to the formula ρ=r / φ and the adsorption curve, so as to obtain the performance of the photocatalytic separation membrane. It can automatically and comprehensively test the performance of the photocatalytic separation membrane.

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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Patent Type & Authority Patents(China)
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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