31results about How to "Strong specific adsorption capacity" patented technology

The invention discloses a preparation method and application of a sulfonamide dimethyl pyrimidine molecularly imprinted polymer. Using sulfamethazine as a template molecule, under the condition of methanol solvent, using methacrylic acid and diallylamine as a mixed functional monomer, divinylbenzene as a crosslinking agent, under the action of an initiator, through a constant temperature water bath Precipitation polymerization reaction to obtain sulfamethazine molecularly imprinted polymer. The sulfamethazine molecularly imprinted polymer material obtained in the present invention has good recognition ability for SMZ, and the effect of separating and enriching SMZ is achieved through specific adsorption on SMZ, and has good specific adsorption ability.

The invention provides a multi-stage indoor formaldehyde removing device with sterilization effect. According to the invention, a high-pass filter screen, a water vapor removing layer, a carbon dioxide removing layer, a steel mesh and a formaldehyde removing layer are sequentially installed between an air inlet and an air outlet; the high-pass filter screen is used for filtering dust particles andPM2.5 particles; the water vapor removing layer is made of a silica gel or molecular sieve, and the silica gel or molecular sieve is grown on activated carbon cotton or high-pass fibers; the carbon dioxide removing layer employs a metal organic framework material growing on the activated carbon cotton or high-pass fibers; the steel mesh is sprayed with nanometer silver ions and is provided with aplurality of uniformly-distributed ultraviolet lamps; and the formaldehyde removing layer is a metal organic framework material growing on the activated carbon cotton or high-pass fibers, and the metal organic framework material is doped with a photocatalyst. The multi-stage indoor formaldehyde removing device of the invention can remove PM2.5, dust, water vapor and CO2 gas step by step, therebyefficiently removing formaldehyde and achieving sterilization effect at the same time.

The invention discloses a reusable low-cost silica aerogel oil-absorbing sponge material and a preparation method thereof, belongs to the technical field of environment. The method disclosed by the invention comprises the following steps: synthesizing a silica aerogel precursor from functional group substituted alkoxy silane used as a raw material under the action of surfactant; and under the condition of drying at room temperature and normal pressure, preparing the elastic lipophilic hydrophobic silica aerogel oil-absorbing sponge, The silica aerogel material prepared by the method has low density, satisfactory elasticity, stable performance and favorable lipophilicity and hydrophobicity, and is reusable; and compared with the common silica aerogel, the reusable low-cost silica aerogel oil-absorbing sponge is wider in applicable temperature range, more convenient in manufacturing process, lower in cost and more stable in quality.

The invention discloses a method for efficient and harmless treatment of copper cyanide wastewater in mines, comprising the following steps: step 1, preparation of modified straw ash: adding straw ash to deionized water and ultrasonically dispersing for 30-40 minutes, and the ultrasonic power is 300-40 minutes 400W, then add ferric chloride and aluminum chloride in turn and continue to stir for 20-30min. The modified straw ash used in the present invention is treated with raw materials such as ferric chloride and aluminum chloride, then compounded with modified bentonite, and finally through the establishment of a blending system. The use of straw ash has the potential of resource reuse. The effect is in line with the concept of environmental protection. The modification of bentonite is poured with a modified liquid. The modified liquid can form a pore structure in the bentonite, so that the straw ash enters the bentonite, and finally seals the pores with the microsphere emulsion to prepare the material. Has a strong specific adsorption capacity.

The invention discloses a preparation method of clenbuterol hydrochloride molecularly imprinted polymer microspheres. This preparation method comprises the following steps: 1) mixing nonionic surfactant solution, clenbuterol hydrochloride, porogen, initiator, inorganic nanoparticles, monoene monomer and polyene monomer, uniformly 2) heat the emulsion to react to obtain polymer microspheres; 3) wash the polymer microspheres, then soak the microspheres in acid solution, then take out the microspheres, wash and remove the acid solution, and obtain template removal 4) performing Soxhlet extraction on the template-removed microspheres, and then drying to obtain clenbuterol hydrochloride molecularly imprinted polymer microspheres. The preparation method of the present invention is simple, cost-saving, and environmentally friendly, and the prepared clenbuterol hydrochloride molecularly imprinted polymer microspheres have good uniformity, strong specific adsorption capacity, and high stability, and can be used in the fields of food safety detection and environmental restoration, etc. with broadly application foreground.

The invention discloses a preparation method of a lanthanum hydroxide modified airgel dephosphorization adsorbent, relating to a preparation method of a dephosphorization adsorbent. The purpose is to solve the problems of low saturation adsorption capacity of the current phosphorus removal adsorbent, difficulty in recovery and reuse after adsorption, and low mechanical properties. Preparation method: Mix graphene oxide dispersion, lanthanum hydroxide aqueous solution and sodium alginate aqueous solution and stir vigorously, add crosslinking agent aqueous solution drop by drop to obtain water coagulation beads, crosslink and solidify after standing, and finally wash and wash in sequence dry. The adsorbent of the invention can be reused, has low cost, fast adsorption speed, high adsorption capacity and good mechanical properties. The invention is suitable for preparing the phosphorus removal adsorbent.

The invention discloses a lanthanum-based loaded magnetic nano-adsorption dephosphorization material and a synthesis method thereof. The preparation method comprises the following steps: Step 1: sequentially adding ferric oxide, chelating agent and lanthanum salt into deionized water and stirring and mixing in sequence Uniform, wherein: the molar ratio of ferric oxide and lanthanum salt is 1:6-5:1; Step 2: put the mixed solution into a polytetrafluoroethylene-lined stainless steel reactor, at a temperature of 120-200°C React for 8-12 hours to obtain the prepared adsorption phosphorus removal material. The magnetic lanthanum-based phosphorus-removing adsorbent prepared by the invention has excellent phosphorus-removal effect, wide pH application range, strong phosphate-specific adsorption capacity, and is easy to recycle and can be recycled.

The invention relates to the field of environmental functional adsorbents, in particular to preparation of a heavy metal ion imprinted material adopting an inverse emulsion and an inverse emulsion polymerization method and an application of the heavy metal ion imprinted material. According to the preparation, heavy metal ions are taken as imprinting ions, a cyclodextrin substance and an acrylamide substance are taken as functional monomers, and the imprinted material with small and uniform particle size is prepared with an inverse emulsion method. A method for preparation of the heavy metal ion imprinted material adopting the inverse emulsion is simple to operate, and the imprinted material has the advantages of smaller particle size, large specific surface area, higher specific adsorption capacity and the like.

The invention provides a preparation method and application of a solid-phase extraction filler and a solid-phase extraction column for basic dyes in food. Among them, the solid phase extraction fillers use functional ionic liquids 1-benzyl-3-methylimidazolium hexafluorophosphate and 1-decyl-3-methylimidazolium hexafluorophosphate, which are very similar in structure to basic dyes, as the main adsorption The reagent has strong specific adsorption capacity for various basic dyes, and does not adsorb impurities such as salts, sugars, pigments, oils, proteins, and starches in food matrices, and can effectively separate impurities and alkalis in the sample to be tested. Sex dyes. In addition, silica gel is used to immobilize the functional ionic liquid to form a loose solid-phase extraction filler, which can also be fully contacted with the extraction liquid of the sample to be tested without extrusion. The sample liquid passes through the packing quickly, which improves the extraction efficiency and shortens the sample pretreatment time. The solid phase extraction column made of the filler can be used for the rapid determination of the basic dye content in food in high performance liquid chromatography, and the determination result is accurate and stable.