Degradation device for degrading organic matter by visible light and preparation method

Abstract

The patent refers to the field of 'chemical, physical, or physico-chemical processes or apparatus'. The invention discloses a degradation device for degrading an organic matter by visible light. The degradation device consists of a titanium dioxide thin film electrode assembly, a platinum electrode assembly and electrolyte, wherein the titanium dioxide thin film electrode assembly consists of a glass matrix, a titanium dioxide thin film and a dye-sensitized film; the titanium dioxide thin film is provided with two functional regions; the part of the titanium dioxide thin film positioned in a dye-sensitized region is a dye-sensitized film, and the non-sensitized part of the titanium dioxide thin film is used as a degradation electrode; the platinum electrode assembly comprises a short platinum electrode and a long platinum electrode which are connected through a copper wire; and the space between the titanium dioxide dye-sensitized film and the short platinum electrode is filled with the electrolyte and a sealing film is adhered to the periphery of the space to seal the space. The degradation device has the advantages of expanding a photo-catalytic response range to a visible light region, improving the solar energy utilization ratio, directly acting the degradation electrode and the platinum electrodes on degradation solution, protecting a dye from being degraded due to a sandwich structure and obviously prolonging the service life, along with novel structure, short distance, low consumption and high degradation efficiency, and is easy to implement.

Description

【Technical field】 [0001] The invention belongs to industrial pollution treatment technology, and in particular relates to a degradation device and a preparation method for degrading organic matter with visible light. 【Background technique】 [0002] Since entering the 21st century, energy and the environment have increasingly become major issues to be solved urgently for future human beings. The organic pollutants in the air and wastewater continue to grow. These organic substances are difficult to degrade in the natural environment and have a very long residence time. range of pollution. Many persistent organic pollutants are carcinogenic, teratogenic, and mutagenic, posing a serious threat to human survival, reproduction, and sustainable development. In recent years, the degradation of organic pollutants has attracted great attention, and how to further improve the degradation of such substances has become one of the most active research fields in the world. Solar energy...

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Problems solved by technology

However, in the process of dye absorbing photons to generate electrons and generate highly active hydroxyl radicals to decompose pollutants, the dye itself is gradually degraded due to oxidation reaction, which eventually leads to sensitized TiO 2 The deactivation of the visible light catalytic system reduces the service life of the catalyst

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