30results about How to "Increased photodegradation rate" patented technology

The invention discloses a preparation method of an 8-hydroxyquinoline iron organic dye photodegradation catalyst, and belongs to the field of metal-organic complexes. The method comprises the following steps: firstly, preparing a photodegradation catalyst reaction solution, dissolving ligands in N,N-dimethylformamide or methanol, dissolving an iron salt in methanol or N,N-dimethylformamide, mixingthe obtained two solutions, carrying out stirring at room temperature, heating the prepared reaction liquid to 60-80 DEG C for a reaction, slowly carrying out cooling to room temperature after the reaction is finished to obtain a brown black block crystal, then carrying out washing in methanol, and carrying out airing, so as to obtain the 8-hydroxyquinoline catalyst with catalytic activity. Themethod provided by the invention has simple operation, mild condition and low cost, and the efficiency is high when the catalyst is applied to organic dye photodegradation, so that the method providedby the invention has feasibility in industrial application.

The invention discloses a solid-gas interface Fenton reaction coupled carbon nitride photocatalytic material and preparation and application thereof. The surface of the photocatalytic material is grafted with hydroxyl groups, and ferrous ions or ferric ions or trivalent chromic ions capable of inducing the Fenton reaction are loaded. During preparation, melamine, alkali chloride and alkali containing alkali metal or alkaline-earth metal elements are adopted as raw materials, treatment is carried out in an electric furnace for a period of time at the temperature of 400 DEG C to 600 DEG C, the product is subjected to washing and suction filtration separation, the yellow carbon nitride photocatalytic material is obtained, and alkali chloride in washing liquid is recycled; the ferrous ions or the ferric ions or the trivalent chromic ions are loaded through a soaking method. According to the method, a catalyst forms a hydroxylated surface through a small amount of alkali, then a small number of ferrous ions or ferric ions or trivalent chromic ions are loaded through the soaking method, the modifying process is simple, easy to operate and low in cost, and the obtained product has excellent gas phase pollutant light degradation capacity.