Method and device for preparing hydrogen based on photoelectric degradation organic pollutant driven by visible light

Abstract

The invention discloses a method and a device for preparing hydrogen based on a photoelectric degradation organic pollutant driven by visible light; the device comprises a reactor, a hydrogen collection device and a light source; the bottom of the reactor is provided with a magnetic stirrer; the inside of the reactor is divided into a photocatalysis primary cell and a photocatalysis hydrogen pool which are independent from each other; a plurality of first photocatalysis electrode pairs are arranged in the photocatalysis primary cell; a plurality of second photocatalysis electrode pairs are arranged in the photocatalysis hydrogen pool; the first photocatalysis electrode pairs and the second photocatalysis electrode pairs are mutually connected serially to form a loop; and magnetons are arranged in the photocatalysis primary cell and the photocatalysis hydrogen pool. According to the method and the device for preparing hydrogen based on the photoelectric degradation organic pollutant driven by visible light, two clean technologies of preparing hydrogen by water electrolysis and preparing hydrogen by degrading the pollutant through solar photocatalysis are coupled, no external power supply is needed, meanwhile the degradation of the organic pollutant and the hydrogen preparation are realized, the hydrogen preparation efficiency is high, and the cost is low.

Description

technical field [0001] The invention relates to the fields of new energy technology and water treatment technology, in particular to a method and device for hydrogen production based on visible light-driven double n-type semiconductor photoelectric degradation of organic pollutants. Background technique [0002] Energy shortage and environmental pollution are two major problems faced by human beings, and finding sustainable and clean alternative energy sources has become a global urgent matter. As a secondary energy source, hydrogen has high energy density and clean combustion, and is recognized as the most ideal alternative energy source for fossil fuels. At present, there are two main methods for producing hydrogen: one is to produce water gas by reacting with water vapor from fossil energy, and then it is obtained through conversion and purification processes; the other widely used and mature method is electrolysis of water Hydrogen production. Fossil fuel hydrogen prod...

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Problems solved by technology

The invention integrates the concepts of dye-sensitized solar cells and fuel cells into the same battery device. Although it can use dyes to absorb solar energy and convert it into electrical energy, and at the same time degrade organic matter in industrial production waste liquid to generate hydrogen energy, this hybrid battery is in In the same reaction cell, it is necessary to degrade organic matter in industrial production waste liquid, generate electricity, and generate hydrogen. The electron-hole pairs of the photocatalytic anode not only have no external driving force to promote their separation, but the remaining electrons after the hole reaction In the process of migration to the hydrogen-producing cathode, it will also be hindered by the external resistance R, so that the efficiency will not be very high

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