3results about How to "Strong specific adsorption capacity" patented technology

The invention discloses a surface molecular imprinting fluorescence sensor based on UIO-66-NH2, a preparation method of the surface molecular imprinting fluorescence sensor and application of the surface molecular imprinting fluorescence sensor in detection of rhodamine 6G, and relates to the field of surface molecular imprinting fluorescence sensors. The preparation method comprises the following steps: S1, dissolving UIO-66-NH2 in acetonitrile, adding warfarin and acrylic acid, and performing ultrasonic treatment to obtain a UIO-66-NH2 solution; adding ethylene glycol dimethacrylate and azodiisobutyronitrile, heating to 70-90 DEG C in an inert atmosphere, carrying out reflux reaction for 7-9 hours, and carrying out suction filtration and drying to obtain an intermediate; and S2, eluting warfarin in the intermediate, and drying to obtain the surface molecular imprinting fluorescence sensor. UIO-66-NH2 is adopted as a carrier and a fluorophore at the same time, the surface molecular imprinting fluorescence sensor capable of specifically recognizing and detecting rhodamine 6G is synthesized, and the surface molecular imprinting technology and the fluorescence sensing technology are combined, so that the capability of specifically recognizing rhodamine 6G of the surface molecular imprinting technology and the fluorescence sensing technology is kept; meanwhile, the advantages of high sensitivity and the like of the rhodamine 6G are fully exerted, so that the aim of trace detection of the rhodamine 6G is fulfilled.

The present application relates to a kind of refractory dispersant and its preparation method in the technical field of refractory additive, it is the comb structure copolymer, the copolymer includes styrene-maleic anhydride copolymer main chain, polyethylene glycol side chain grafted on the styrene-maleic anhydride copolymer main chain by ester bond, and phosphate radical;The polyethylene glycol side chain includes short-chain polyethylene glycol with molecular weight of 400-600 and long-chain polyethylene glycol with molecular weight of 800-1200.The present application realizes the precise division of function by using asymmetric compound polyethylene glycol side chain of specific molecular weight range, and controls esterification grafting degree is 50%-85%, not only can provide excellent initial wetting and dispersion force, ensure that slurry has excellent construction fluidity, but also can effectively prevent particle re-aggregation and sedimentation under static or shear, so as to fundamentally solve the technical problem that traditional dispersant is difficult to consider high initial fluidity and long-term anti-settling property, plasticity.

The invention belongs to the field of membrane separation, and particularly relates to a polymer membrane for an azeotropic mixture and a preparation method of the polymer membrane. Preparing porous nano silica sol; fully infiltrating the porous nano-silica sol and a cross-linking agent into the separation layer, and cross-linking to obtain the porous nano-silica gel. The method can be used for separating the azeotropic mixture of the methanol and the hydrophobic organic matter with the kinetic diameter larger than that of the methanol, and has a specific adsorption tendency to formaldehyde.