7 results about "Nanocomposite" patented technology

The invention discloses a polymethyl methacrylate-zinc hydroxide nanocomposite and a preparation method thereof. The nanocomposite is powder of which the grain size is 5-40mum. The nanocomposite is formed by connecting zinc hydroxide nanosheets and polymethyl methacrylate in mass percent of (1-40):(60-99) by Zn-O chemical bonds. The zinc hydroxide nanosheets are 5-50mum long, 5-50mum wide and 50-500nm thick, and the polymethyl methacrylate is 50-500nm in grain size. The preparation method comprises the following steps of mixing soluble ammonium salt, soluble zinc salt and water firstly and evenly stirring to obtain mixed solution, adding the polymethyl methacrylate to the mixed solution and stirring to obtain complex solution, subsequently, adding an emulsifying agent to the complex solution and severely stirring to obtain emulsion, then, adding an initiating agent to the emulsion to obtain composite emulsion, and then, putting the composite emulsion in vacuum for drying to obtain a target product. The polymethyl methacrylate-zinc hydroxide nanocomposite is excellent in heat stability, and can be widely used in the field of aviation, automobiles, electronic instruments, consumer goods and the like.

The invention belongs to the field of a lithium ion battery material, and discloses a titanium dioxide-copper oxide nano compound and a preparation method and an application thereof. The preparation method comprises the steps of adding nanometer TiO<2> and Cu(Ac)<2>.H<2>O into a solvent, and performing ultrasonic treatment, stirring and mixing uniformly to obtain a turbid liquid; next, dropwise adding stronger ammonia water to adjust PH to be alkali, heating to 85-95 DEG C and reacting for 10-15h, and performing natural cooling after the reaction is completed; and performing washing and dryingon the obtained solid product, and next, performing calcining in the air atmosphere at a temperature of 300-450 DEG C for 3-8h to obtain the titanium dioxide-copper oxide nano compound. The preparation method is simple and easy to implement, and energy-saving and environment friendly; and the obtained TiO<2>-CuO nanometer compound, when used as the negative electrode material of the lithium ion battery, is excellent in electrochemical performance.

The invention discloses a preparation method of a SnS2 nanosheet loaded graphene-based nano composite material, which comprises the following steps: step 1, dispersing graphene oxide nanosheets in deionized water to prepare a graphene oxide solution; 2, dissolving tin tetrachloride in deionized water, and adding thiourea as a sulfur source and a reducing agent; 3, adding the graphene oxide solution in the step 1 into the solution obtained in the step 2, and carrying out mixing treatment through ultrasonic waves and transferring a mixture of the two solutions subjected to ultrasonic treatment into a hydrothermal reaction kettle for reaction to obtain a precipitate; and 4, centrifuging, washing, drying and grinding the precipitate obtained by the reaction in the step 3 to obtain the graphene nanosheet/tin disulfide composite nanomaterial. The graphene nanosheet/tin disulfide composite nanomaterial prepared by the method has higher capacity and stability when being used as a sodium storage electrode material.

The invention discloses a magnetic nano composite material and a preparation method thereof, and an optical-property-adjustable dispersion liquid and a preparation method thereof. The magnetic nano composite material comprises a magnetically coated anisotropic nano structure, preferably a magnetically coated anisotropic nano structure. The dispersion liquid with the adjustable optical property comprises a magnetic nano composite material. The preparation method of the dispersion liquid comprises the following steps: preparing a two-dimensional magnetic nano composite material; dispersing the two-dimensional magnetic nano composite material in a solution to prepare a colloid dispersion solution; and applying an external magnetic field to the colloid dispersion liquid to obtain the compositematerial dispersion liquid with adjustable optical properties. The preparation method is simple in condition, short in preparation period, low in cost and easy to implement, and the prepared dispersion liquid with the adjustable optical property is high in magnetic responsiveness and adjustable in optical property and has great application potential in the field of display devices.

The invention discloses a preparation method of an electrochemiluminescence sensor for detecting organochlorine pesticides. The preparation method is characterized in that firstly a novel two-dimensional nanocomposite-titanium dioxide/molybdenum disulfide composite, namely an iron and manganese codoped titanium dioxide nanodiamond and molybdenum disulfide in-situ composite two-dimensional nanocomposite FeMn-TiO2/MoS2, is prepared, organochlorine pesticide antibodies are loaded by utilizing the good biocompatibility and large specific surface area of the material, during detection, iron and manganese codoped titanium dioxide can catalyze hydrogen peroxide to generate O2 in situ and carry out electrochemical reaction with K2S2O8 in a base solution to generate electrochemiluminescence signals, and the impacts of specific quantitative combination of the antibodies and antigens on the electron transport capacity are utilized, so that the current intensity is reduced, thus reducing the luminescence intensity and finally achieving construction of the electrochemiluminescence sensor for detecting the organochlorine pesticides by adopting an unmarked electrochemiluminescence method.

The invention discloses a magnetically-induced self-assembled electrochemical biosensor for sensitively detecting trace nickel ions and application of the magnetically-induced self-assembled electrochemical biosensor, and belongs to the technical field of electrochemical biosensing. According to the electrochemical biosensor, nickel ion dependent deoxyribozyme is used as a biological recognition element, nickel ions can be specifically recognized, and the electrochemical biosensor has good selectivity. The alpha-Fe3O4/Fe2O3-Au nanocomposite is used as an electrode substrate material, has good conductivity, and can be stably combined on the surface of an electrode through magnetic force induced self-assembly. The electrochemical biosensor has the advantages that the linear range of the nickel ion concentration capable of being detected is 100 pM to 10 muM, and the detection limit is 55 pM; the electrochemical biosensor constructed by the invention is high in sensitivity, strong in specificity, low in detection limit, simple to prepare and short in detection period.