| abstract |
The invention relates to the technical field of photocatalytic degradation, and discloses a kaolin-loaded Mn-doped ZnO composite material which has a unique sea urchin-shaped appearance, increases the contact and utilization rate of Mn-doped ZnO to light energy, and is MnCO 3 Do not participate in practiceThe Mn ion doping can improve the photodegradation performance of ZnO, which is mainly due to the Mn ion doping, making it a trap for electrons and holes, thereby reducing recombination of electrons and holes and improving photodegradation efficiency, and in addition, the Mn doping introduces an impurity level into the band gap of ZnO, which enhances absorption of a sample in the visible light region and improves the utilization rate of light, and when kaolin supports ZnO, agglomeration of powder can be reduced compared to pure ZnO, and modified kaolin can improve adsorption of an organic compound, increase contact between the organic compound and a photocatalyst, promote separation of photo-generated electrons and holes, and does not inhibit effective absorption of light energy by the photocatalyst. |