Preparation method of nano-titanium dioxide modified microchannel reactor

Abstract

The invention provides a preparation method for a nano-TiO2 modified micro-channel reactor. The preparation method comprises the following steps: preparing a micro-channel reactor made of a transparent material, and cleaning the micro-channel reactor for later use; adding a titanium source in an acidic water solution or ammonia water to obtain a mixture, and stirring the mixture to form nano-TiO2 sol; injecting the nano-TiO2 sol in a channel of the later-use micro-channel reactor, staying for 5-30 min, and injecting deionized water in the channel of the micro-channel reactor for cleaning to obtain a nano-TiO2 sol particle modified micro-channel reactor; placing the nano-TiO2 sol particle modified micro-channel reactor in a 500-1,000 W infrared source to be illuminated, ultrasonically cleaning the passage with an acidic cleaning solution and deionized water in sequence, and obtaining the nano-TiO2 modified micro-channel reactor. The preparation method has the characteristics of being simple in preparation process, and easy to achieve industrial production; the micro-channel reactor, prepared according to the preparation method, has the characteristics of being high in density, convenient and high in efficiency.

Description

[0001] (1) Technical field

[0002] The invention relates to a preparation method of a nano-titanium dioxide-modified microchannel reactor, which can be used for photocatalytic sewage treatment, and belongs to the fields of inorganic material coating, microchannel reactor design and water treatment.

[0003] (2) Background technology

[0004] Due to its stable chemical properties, non-toxicity, good biocompatibility, excellent photoelectric and photocatalytic properties, and abundant resources, titanium dioxide has become the most potential photocatalytic material and has become a new research hotspot in sewage treatment. . However, the titanium dioxide photocatalytic technology is still in the stage of laboratory and theoretical exploration, mainly because the catalyst activity of the titanium dioxide photocatalytic reactor, which is the main equipment of the photocatalytic reaction, is not fully exerted, and the insufficient utilization of the light source directly affects th...