Technique for preparing porous ceramicite loaded Ag/N-TiO2 nano film

Abstract

The invention provides a preparation technique for porous porcelain granules loaded with Ag / N-TiO2 nanometer film, which comprises the preparation of the porous porcelain granules and the manufacture of film on the porous porcelain granules, and is characterized in that: (1) -100 meshes of fly ash and quicklime and -200 meshes of kaolin and glass powder are adopted as raw materials, which are mixed according to the weight ratio of 70: 6: 10:14; TiO2 that accounts for 0.5-1 percent of the total weight of the raw materials, NH4HCO3 that accounts for 20-30 percent of the total weight of the raw materials and water that accounts for 60-65 percent of the total weight of the raw materials, are all added into the mixture mixed by the four raw materials; the new mixture is stirred uniformly to prepare granules with the particle size of 1-2cm, which is immediately placed under microwave for foaming and drying for 1-5min so as to prepare porous porcelain granule billets with the diameter of 2-5cm, and then the billets are sintered for 1h under 1100DEG C to prepare the porous porcelain granules; (2) Ag / N-TiO2 sol is prepared by adopting sol-gel method and the sol is coated on the porous porcelain granules by adopting dipping method, thus obtaining the porous porcelain granules loaded with Ag / N-TiO2 nanometer film after drying and calcining. The sol is evenly coated on the porous porcelain granules, so active constituent does not lose effectiveness under low temperature, thus having good visible light degradation and relatively strong bactericidal effect.

Description

technical field [0001] The invention provides a loaded Ag / N-TiO 2 The invention relates to a preparation process of porous ceramsite of nanometer film, which belongs to the technical field of preparation process of functional ceramics. Background technique [0002] During the use and transportation of petroleum, a large amount of oily substances will be left around people, and rivers, lakes and seas will be polluted to varying degrees. These water-insoluble and floating oily pollutants will cause harm to humans and marine organisms. The treatment of oily wastewater has attracted people's attention and has become a major problem in water treatment. In the past ten years, the intensive aquaculture industry at home and abroad has developed rapidly. Compared with traditional farming methods, high-density intensive farming requires relatively less land and water resources. Although its economic advantages are great, it also brings serious water pollution problems. The substanc...

AI Technical Summary

Problems solved by technology

[0004] With the increasingly mature technology of fly ash research and development, fly ash cement, concrete admixture, fly ash block and fly ash ceramsite have been paid attention to and utilized by people, but the current national average utilization rate of fly ash is only 50%, there are still 50 million tons of fly ash that need to occupy land or rivers, sea areas, etc., causing serious pollution to the environment. Therefore, it is still a very urgent task to strengthen the utilization of fly ash and develop ways to use fly ash. Task