Photochemical cell, preparation method thereof and application of photochemical cell in cyclic degradation of organic dyes

Abstract

The invention relates to a photochemical cell, a preparation method thereof and application of the photochemical cell in cyclic degradation of organic dyes. The adopted technical scheme is as follows:a photochemical cell anode is prepared, namely TiO2 and ethanol are mixed and stirred to obtain a mixture of TiO2 and ethanol, the mixture is dropwise added on conductive glass, drying is performed to obtain a TiO2 thin film, H2PtCl6 solution is fetched and dropwise added on the TiO2 thin film under the condition that coverage area can not exceed the area of the TiO2 thin film, drying is performed, then the TiO2 thin film is placed in a muffle furnace to be fired, and cooling is performed, so that the photochemical cell anode is obtained; a photochemical cell cathode is prepared, namely platinum is plated on conductive glass to be taken as a cathode of the photochemical cell; and the TiO2 surface of the anode and the platinum-plated surface of the cathode are oppositely placed, an insulating material is adopted for sealing a space formed by the anode and the cathode, so that the photochemical cell is obtained. The prepared photochemical cell has better response in visible light, and anodic reaction is performed by virtue of photogenerated holes, so that the organic dyes are degraded; meanwhile, photogenerated electrons are transmitted to an external circuit, and electricity can begenerated.

Description

technical field [0001] The invention relates to the technical field of photochemical cells, in particular to a photochemical cell, a preparation method thereof and an application in cyclically degrading organic dyes. Background technique [0002] Nowadays, with the development of chemistry, there are more and more types of organic pollutants in printing and dyeing industrial wastewater, and the molecular structure is much more complex than the traditional molecular structure, so the traditional treatment methods are not suitable. Titanium dioxide itself has the characteristics of biological inertness, strong oxidizing ability, non-toxicity and non-photocorrosion, etc., and its low cost, non-toxicity and wide resources make it widely used in photocatalytic degradation. When TiO 2 When irradiated by light with energy greater than the forbidden band width, the electrons (e) in the valence band are excited, jump over the forbidden band and enter the conduction band, leaving pos...

AI Technical Summary

Problems solved by technology

At present, from the perspective of protecting the environment and saving energy, the suspension catalyst system is difficult to recycle, easy to poison, and when there are high-valent cations in the solution, the catalyst is not easy to disperse, etc., so the TiO 2 It is only in the stage of laboratory research for the degradation of organic dyes

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