38results about How to "Firmly loaded" patented technology

The invention relates to a multifunctional antibacterial compound preparation and its application, relating to an antibacterial compound preparation containing silver and zinc ions and its application, in particular to an antibacterial compound preparation containing silver-loaded zinc nano-zeolite and tourmaline and its application . The purpose is to provide a multifunctional antibacterial compound preparation with good antibacterial effect, low cost and firm immobilization of silver and zinc ions and its application. The invention is a multifunctional antibacterial compound preparation, which comprises silver-loaded zinc nanometer zeolite powder and tourmaline superfine powder. The multifunctional antibacterial composite preparation of the present invention has the functions of anti-radiation, antibacterial, and deodorization, and each component therein complements each other and synergizes with antibacterial effect, and the antibacterial composite preparation of the present invention is used to prepare antibacterial fabrics, which can effectively kill bacteria on the fabrics. Harmful bacteria can avoid the spread of diseases, and because the compound preparation is safe, non-toxic, and stable, it can well meet the requirements of practical applications. The invention is applied in the field of preparation of antibacterial products.

The invention discloses a preparation method for a porous biomimetic catalytic material and application thereof. The preparation method comprises the following steps of dissolving chitosan into acetic acid solution, stirring and dropwise adding ammonia water until the pH value is between 6.5 and 7; adding 4-(p-carboxy phenyl) metalloporphyrin ethanol solution, stirring for 24 h, and then adding NH4HCO3 solution, and uniformly stirring; drying by an infrared lamp, and performing vacuum drying to obtain the porous biomimetic catalytic material. The porous biomimetic catalytic material comprises the following components in part by weight 17.6 parts of chitosan, 8.78 parts of glacial acetic acid, 0.0878 part of ammonia water, 0.0176 part of metalloporphyrin, 43.9 parts of ammonium bicarbonate, 500 parts of distilled water and 100 parts of ethanol. Compared with the metalloporphyrin homogeneous catalytic material, the porous biomimetic catalytic material has the advantages that the metalloporphyrin is less in using amount and lower in cost and is easier to separate. The porous biomimetic catalytic material can obviously improve the one-way conversion rate of cyclohexane and the yield of main products and can be reused at least seven times, the average conversion rate of the cyclohexane is between 15.2 and 17.0 percent, and the average conversion rate of ketone alcohol is between 10.9 and 12.7 percent.

The invention discloses a nitrogen and sulfur codoped silica gel supported TiO2 photocatalyst and a preparation method thereof. The method comprises the steps: preparing sol by taking tetraethoxysilane and butyl titanate as precursor raw materials for supporting TiO2 and taking mixed acid of sulfuric acid and nitric acid as a nitrogen and sulfur doped source and an initiator for sol-gel reaction; standing in constant-temperature water bath or standing at room temperature for ageing to prepare a silicon-titanium copolymer containing sulfate radical and nitrate radical; sintering under nitrogen atmosphere to prepare the nitrogen and sulfur codoped silica gel supported TiO2 photocatalyst. The photocatalyst prepared by the method has high purity and crystallinity; nitrogen and sulfur codoped TiO2 crystal particles are positioned in a silica gel mesoporous framework structure, so N and S are effectively codoped, the photoresponse range of the TiO2 photocatalyst is widened, and the aims of photocatalytic red shift and sunlight efficient utilization are fulfilled.

The invention relates to a method for preparing a stationary phase coating material for trace substance identification and application of the material. The method comprises the following steps of: adding carbosilane hyperbranched macromolecules with allyl terminals and MeHSiCl2 into a solvent, adding a Kastedt catalyst, and performing hydrosilylation reaction in the presence of nitrogen; adding triethylamine, fully dried cyclodextrin and fully dried tetrahydrofuran (THF) for bonding reaction; and finally cooling and separating, thus obtaining the material. The material is coated on capillary inner columns; and the material has the advantages of uniform film formation, high column efficiency and high adsorption quantity, and has analysis and identification capability for trace substances.