Ti3C2@TiO2 photo-thermal catalyst, preparation method thereof and method for degrading organic pollutants

Abstract

The invention provides a preparation method of a Ti3C2@TiO2 photo-thermal catalyst, which comprises the following steps of mixing Ti3C2 nanoparticles with deionized water, carrying out ultrasonic dispersion, and drying at 50-70 DEG C, flatly laying the dried powder in an aluminum oxide crucible, then placing the aluminum oxide crucible in a muffle furnace to be calcined, enabling the calcining temperature to be 300-550 DEG C, cooling and grinding after calcining is completed, and preparing the photo-thermal catalyst high in photocatalysis efficiency. The Ti3C2@TiO2 photo-thermal catalyst is prepared by the preparation method disclosed by the invention. A method for degrading organic pollutants comprises the following steps of adding an organic pollutant solution and the catalyst prepared by the preparation method into a self-made quartz reactor, performing ultrasonic dispersion, adding a magnetic stirring magneton, and performing magnetic stirring under a dark condition to balance adsorption and desorption of the catalyst, and illuminating the reactor under magnetic stirring. According to the method, the catalyst and the treated liquid do not need to be separated when the organic pollutants are degraded, and meanwhile, the catalyst can be reused.

Description

technical field [0001] The invention relates to the field of chemical technology, and in particular to a Ti 3 C 2 @TiO 2 A photothermal catalyst, a preparation method thereof, and a method for degrading organic pollutants. Background technique [0002] Traditional water pollution control technologies are mainly based on physical methods, which have disadvantages such as high energy consumption, secondary pollution and low efficiency. Compared with traditional technologies, the energy source of photocatalytic technology is solar energy, which is a clean and almost unlimited energy source. The use of photocatalytic technology to treat organic pollutants in water or air may be one of the technologies suitable for future environmental pollution control. [0003] The research on photocatalytic degradation of organic pollutants in water has been developed for decades, and many types of photocatalysts effective for the degradation of organic matter have been reported. Among the...

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Problems solved by technology

[0003] The research on photocatalytic degradation of organic pollutants in water has been developed for decades, and many types of photocatalysts effective for the degradation of organic matter have been reported. Among them, titanium dioxide photocatalyst has obvious advantages such as low cost, large reserves, simple preparation method and non-toxicity. There are also shortcomings such as only absorbing ultraviolet light and fast recombination of photogenerated electrons and holes.

In the current research, most of the catalysts used in the degradation process are fine powder particles. After the degradation, it is necessary to use centrifugation or filtration to separate the catalyst from the reaction solution. However, in actual operation, the centrifugation method takes a long time and energy. high consumption

When filtering, the fine catalyst particles can easily block the filter, resulting in poor separation effect, and the industrial application prospects of these two methods are not promising