A tube-and-tube nano-titanium dioxide tube array photocatalytic reactor and preparation method thereof

Abstract

The invention provides a tubular nano titanium dioxide pipe array photocatalysis reactor and a preparation method, relating to a photocatalysis reactor. The tubular nano titanium dioxide pipe array photocatalysis reactor and the preparation method provided by the invention are simple to operate and easy to realize industrial application. The photocatalysis reactor is provided with an ultraviolet lamp, a photocatalyst, 1-6 photocatalysis reaction zone channels, a submersible pump, a sewage input channel, a booster pump, a first sewage recycling channel, a first three-way switch, an air booster pump, a gas-conveying channel, a second three-way switch and a second sewage recycling channel. The preparation method comprises the following steps of: firstly preparing a vertically growing titanium dioxide nano pipe array as the photocatalyst; connecting the pieces one by one by using spot welding, and then rolling into a cylinder; constructing the titanium dioxide nano pipe array as the photocatalyst on the surface of a titanium foil rolled into the cylinder shape; and forming the tubular photocatalysis reactor, and finally assembling to obtain the tubular nano titanium dioxide pipe array photocatalysis reactor.

Description

technical field [0001] The invention relates to a photocatalytic reactor, in particular to a tubular nano titanium dioxide tube array photocatalytic reactor and a preparation method thereof. Background technique [0002] Nanoscale titanium dioxide (TiO 2 ) has excellent photocatalytic, photoelectric conversion and chemical stability properties, so it has attracted great attention in related fields such as photocatalytic air purification and photocatalytic water treatment, and has become one of the hotspots of nanotechnology research today. However, in practical applications, granular nano-TiO 2 The agglomeration of the catalyst and the separation and recovery from the liquid phase after use have become the main obstacles restricting its industrial application. Nano TiO 2 Particle loading and immobilization on the surface of various solid supports can partially solve the above problems, but it may reduce the solid-liquid contact area of ​​the catalyst, thereby seriously af...

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Problems solved by technology

[0004] However, the self-assembly of TiO on the surface of titanium metal by electrochemical anodization 2 Nanotube array structure, usually only small samples of about 1cm×1cm can be prepared in the laboratory for basic application research in the laboratory

To construct TiO on a large area of ​​titanium metal surface 2 Nanotube arrays are still facing the following technical obstacles to achieve industrial application: (1) Large-area titanium surface anodization requires high-power power supply equipment, which requires a large investment; (2) Large-area titanium surface anodization requires a large amount of HF-containing solution , will inevitably cause environmental pollution problems; (3) the uniform low temperature condition of the solution system in the high-current anodic treatment process is difficult to control, so it is difficult to obtain high-quality TiO2 that can be applied industrially 2 Nanotube Array Photocatalyst

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