Photocatalyst device

Abstract

The invention relates to a photocatalyst device which comprises at least one photocatalyst layer and at least one plate electrode; the at least one photocatalyst layer is used for generating electronsand cavities by excitation after absorbing the energy of light with specific wave length; and the at least one plate electrode is respectively arranged to be adjacent to the corresponding photocatalyst layer and used for polarizing the electrons and cavities generated by the corresponding photocatalyst layer by excitation after being provided with a bias voltage. The photocatalyst device sets electrodes, and after being provided with the bias voltage, the electrode can polarize the electrons and cavities generated by the corresponding excited photocatalyst layer which is arranged to be adjacent to the electrode by excitation, thus causing the electrons to be separated from the cavities so as to avoid automatic compound annihilation of the electrons and the cavities, and further effectively maintaining the action activity between the electrons as well as the cavities and oxygen molecules as well as water molecules to achieve the aim of enhancing the effectiveness of photocatalyst action.

Description

technical field [0001] The invention relates to a photocatalyst device. Background technique [0002] Photocatalyst has antibacterial, deodorizing, self-cleaning and other functions. Its working principle is: when the photocatalyst is irradiated with light of appropriate wavelength, the light is absorbed by the photocatalyst in the form of energy, and then the photocatalyst body is excited to generate electrons and holes. Negatively charged electrons and oxygen molecules on the surface of the photocatalyst (O 2 ) can produce superoxide anion (?O 2 - ), positively charged holes and water molecules on the surface of the photocatalyst (H 2 The action of O) can produce hydroxyl radicals (?OH) with strong oxidative decomposition ability; the hydroxyl radicals can decompose organic matter into carbon dioxide and water. Therefore, after the photocatalyst is irradiated with light of appropriate wavelength, the superoxide anion (?O) generated on the surface of the photocatalyst ...

AI Technical Summary

Problems solved by technology

[0003] However, if the electrons and holes produced by the photocatalyst absorb light energy are self-combined and annihilated, the photocatalytic activity of the electrons and holes will be lost, making it impossible to combine with the oxygen molecules (O) on the surface of the photocatalyst. 2 ) and water molecules (H 2 O) produces superoxide free radicals with strong reducing power and hydroxyl free radicals with strong oxidative decomposition power, resulting in a decrease in photocatalyst efficiency

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