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Photo-magnetic synergistic catalytic technique and its application for degrading organic pollutant

A photocatalytic reactor, photocatalytic technology, applied in chemical/physical process, light water/sewage treatment, chemical/physical/physical chemical process of applying energy, etc. Effects of Catalytic Conversion Efficiency and Mineralization Rate

Inactive Publication Date: 2003-12-10
FUZHOU UNIV
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Problems solved by technology

[0005] In order to overcome the problem of low efficiency of the existing photocatalytic technology, the present invention provides a magneto-optical synergistic catalytic technology capable of improving the quantum efficiency of photocatalysis, that is, the photocatalytic system is simultaneously acted on by a magnetic field and sunlight or ultraviolet light, which can reach Efficiently decompose organic pollutants in wastewater and waste gas

Method used

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  • Photo-magnetic synergistic catalytic technique and its application for degrading organic pollutant

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Embodiment 1

[0011] Platinized titanium dioxide (Pt / TiO) prepared by sol-gel method 2 , containing Pt 0.5wt%) as the catalyst and benzene-containing air (500ppm, the dilution gas adopts standard purified air) as the reactant. use figure 1 The first experiment only added light sources (four 8W wavelength 254nm ultraviolet lamps), and the second experiment added the above-mentioned light sources and an electromagnet magnetic field source with a field strength of 70mT at the same time. When the reactant gas passed through the reactor continuously at a flow rate of 30ml / min, the concentration of benzene remaining in the outlet gas of the reactor and the CO 2 concentration, and calculate the conversion rate and mineralization rate of benzene. The experimental results are: according to the first experimental condition, that is, when there is a light source and no magnetic field, the steady-state conversion rate and mineralization rate of benzene are 15.5% and 19.0% respectively; and according ...

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Abstract

On the basis of original photocatalytic reactor an external magnetic field of added to form said invented magnetic field-photocatalytic coupling reaction equipment, sand invention utilizes the influence of the magnetic field on the catalyst and intermediate body of photocatalytic process to produce photocatalytic-magnetic field synergistic action so as to greatly raise the photocatalytic conversion efficiency of organic pollutant and mineralization rate and attain the goal of high-effectively degradating organic pollutants being in waste water and waste gas.

Description

technical field [0001] The invention relates to a catalytic technology and its application in environmental pollution control, in particular to a light-magnetic synergistic catalytic technology and its application in degrading organic pollutants. Background technique [0002] with TiO 2 Semiconductor oxide-based photocatalytic technology has a wide application background and great significance in clean energy, environmental protection and new materials. However, TiO 2 The quantum efficiency of photocatalysts is too low, and the utilization rate of solar energy is not high, which seriously restricts the large-scale and wide application of photocatalytic technology. In order to improve the efficiency of photocatalysts and photocatalytic processes, a lot of exploration and research have been carried out at home and abroad. to TiO 2 Photocatalysts have been extensively modified or modified, including doping various metal and non-metal elements, compounding the second semicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01J8/02B01J19/08C02F1/32
Inventor 付贤智王绪绪张雯刘平李旦振
Owner FUZHOU UNIV
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