9 results about "Trioctylphosphine" patented technology

The application is suitable for the technical field of nanometer material synthesis and application, and provides a preparation method of crystalline PdCN@amorphous PdP core-shell nanoparticles, which comprises the following steps: polyvinylpyrrolidone, L-ascorbic acid and potassium bromide are added into deionized water to form a mixed solution, after preheating of an oil bath, sodium chloropalladate solution is injected, and then transferred to the oil bath for reaction, and after centrifugation and cleaning, cubic Pd nanoparticles are obtained; the cubic Pd nanoparticles are dissolved in dimethyl sulfoxide solution, transferred to a reaction kettle for reaction, and after centrifugation and cleaning, cubic PdCN nanoparticles are obtained; the cubic PdCN nanoparticles are mixed with oleylamine solution, and after adding trioctylphosphine solution and heating, centrifugation and cleaning, the crystalline PdCN@amorphous PdP core-shell nanoparticles are successfully obtained. The reagents used in the application can be purchased on the market and do not need further treatment, the preparation method is simple, and the required equipment is all basic laboratory equipment, without expensive equipment and instruments.

The present application provides an oil-soluble ionic liquid with anti-corrosion and friction-reducing properties, as well as its preparation method and application. The cation of the oil-soluble ionic liquid is a quaternary phosphonium cation of different alkyl chain lengths with a benzotriazole functional group, and the anion is sodium diisooctyl sulfosuccinate. The preparation method of the ionic liquid is as follows: chloromethylbenzotriazole and trioctylphosphine are mixed, and a quaternary phosphonium reaction is performed to obtain trioctylphosphonium functionalized with benzotriazole; then the trioctylphosphonium functionalized with benzotriazole is mixed with sodium docusate, and an ion exchange reaction is performed to obtain an oil-soluble ionic liquid. The oil-soluble ionic liquid is used as a lubricating additive for base oil PAO10 and is applied to the lubrication of steel / steel friction pairs. Experimental results show that the oil-soluble ionic liquid has good solubility in base oil PAO10, and at the same time, it not only has excellent friction-reducing and anti-wear properties on the steel / steel friction pair interface, but also has a good corrosion inhibition effect on the friction pair interface.

The invention is applicable to the technical field of materials, and provides a customized lead selenide quantum dot preparation method, which comprises: preparing a lead oleate precursor and a trioctylphosphine-selenium precursor in advance; the temperature of the lead oleate precursor in the first reaction container is stabilized to 170-250 DEG C, after the trioctylphosphine-selenium precursor is injected, the temperature is reduced to 135-215 DEG C, and meanwhile, a second reaction container containing octadecene is heated to the same temperature; transferring the thermocouple and the heating jacket of the container II to the container I, keeping the temperature at 135-215 DEG C, reacting for 15 minutes, adding methylbenzene, and quenching in an ice-water bath; and after subpackaging the product, carrying out centrifugal purification twice by using methanol / ethanol, trichloromethane and acetone to obtain the lead selenide quantum dot with the adjustable luminescence peak position of 1200-2500nm. Continuous adjustment of the spectrum and the half-peak width can be achieved, PLQY can be improved by adding phenylethyl ammonium chloride, uniform particle size is guaranteed through the double-container design, operation is easy, convenient and repeatable, the material can be excited by multiple wavelengths, and the method is suitable for the field of optical devices.

The invention relates to the technical field of light-emitting display, in particular to a patterning method of blue nickel-doped indium phosphide quantum dots, which comprises the following steps: preparing a shell zinc precursor solution and a sulfur-trioctylphosphine solution; carrying out synthesis of the InP / InNiP quantum dots; according to the method, the photoelectric property of the InP QDs is explored through nickel single element doping, and the FWHM of the quantum dots is remarkably reduced by carefully controlling the doping process and synthesis conditions. Ni doping has a positive effect on the PL performance of the InP QDs. The size uniformity of the quantum dots can be improved, so that the size of the quantum dots is more uniform; according to the method, the material utilization rate is high, patterning can be achieved without using a mask plate, fine quantum dot pattern control is achieved through ink-jet printing, high-precision imaging is achieved through a low-cost means, and high-precision ink-jet printing quantum dot imaging is achieved.

The application provides a preparation method of a palladium-tin-gallium ternary alloy nanomaterial, which comprises the following steps: A) under the protection of inert gas, mixing a metal palladium precursor, a metal tin precursor, a metal gallium precursor, methylamine hydrochloride, tri-octyl phosphine and oleylamine, and performing a warming reaction to obtain a preliminary reaction solution; and B) further performing a warming reaction on the reaction solution, washing and drying the reaction solution to obtain the palladium-tin-gallium ternary alloy nanomaterial. The preparation method is simple in operation and controllable in reaction conditions, and the obtained nanomaterial is spherical in shape, uniform in size and good in dispersity. The component of the nanomaterial can be accurately controlled by adjusting the feeding ratio of the metal precursors. The carbon-loaded nanomaterial catalyst prepared by loading the nanomaterial on a carbon carrier has excellent catalytic activity and stability for the electrocatalytic oxidation reaction of various alcohols, and has important application prospects in the field of new energy technologies such as direct alcohol fuel cells.

The application is suitable for the technical field of nanometer material synthesis and application, and provides a method for synthesizing amorphous PdP hollow nanoparticles, which comprises the following steps: adding polyvinylpyrrolidone, L-ascorbic acid and potassium bromide into deionized water, preheating in an oil bath pot, injecting sodium chloropalladate solution to react, centrifuging and cleaning to obtain cubic Pd nanoparticles; dissolving the cubic Pd nanoparticles in dimethyl sulfoxide solution and reacting in a reaction kettle, centrifuging and cleaning to obtain cubic PdCN nanoparticles; mixing the cubic PdCN nanoparticles with oleylamine solution, adding trioctylphosphine and heating, centrifuging and cleaning to obtain amorphous PdP hollow nanoparticles. The application first prepares amorphous PdP hollow nanoparticles with uniform size. The reagents used can be purchased on the market and do not need further treatment; the preparation method is simple, the required equipment is all basic laboratory equipment, and no expensive equipment is needed.

According to the one-step synthesis method of the mid-infrared response PbSe quantum dot, a trioctylphosphine selenium precursor and a lead acetate trihydrate precursor are adopted, and the reaction time and the reaction temperature of the trioctylphosphine selenium precursor and the lead acetate trihydrate precursor are accurately regulated and controlled; the controllable synthesis of monodisperse PbSe quantum dots with an absorption peak reaching a medium-wave infrared range and an average characteristic size of about 10nm can be realized. Furthermore, the invention also discloses the PbSe quantum dot prepared by the one-step synthesis method and application of the PbSe quantum dot in related fields.

This invention discloses a method for preparing semiconductor nanocrystalline quantum dots, the quantum dots themselves, and their applications, relating to the field of quantum dot synthesis technology. The quantum dots have a core-shell structure. The preparation method includes the preparation of a (Cu)AgInGaZnS core solution and the initial (Cu)AgInGaZnS / Ga x Preparation of S quantum dots and the final (Cu)AgInGaZnS / Ga x The preparation of S quantum dots and the preparation method of (Cu)AgInGaZnS core solution include: mixing (Cu source), Ag source, In source, Ga source, Zn source and oleylamine solution and placing them in a vacuum environment. After complete dissolution, the mixture is filled with nitrogen gas to obtain a mixed precursor solution containing (Cu)AgInGaZn. Sulfur powder is dissolved in a mixed solution of oleylamine and octyl mercaptan and injected into the mixed precursor solution. After a single heating and holding, an initial (Cu)AgInGaZnS core solution is obtained. After a single cooling of the initial (Cu)AgInGaZnS core solution, trioctylphosphine (TOP) is injected and held at that temperature. Subsequently, the solution is cooled to room temperature to obtain the (Cu)AgInGaZnS core solution. This invention studies the Ga of quantum dots. x The S-shell is thicker, resulting in high absorption capacity, high efficiency, and pure color.

The invention belongs to the technical field of semiconductor photoelectric materials, and relates to a preparation method and application of two-dimensional metal halide perovskite, the chemical formula of the two-dimensional metal halide perovskite is A2BX4, A is positive monovalent amine ions, and B is one or more of Pb < 2 + >, Sn < 2 + > and Ge < 2 + >; x is one or more of Cl <->, I <-> and Br <->; the preparation method comprises the following steps: dissolving BX2 in trioctylphosphine or trioctylphosphine oxide to form a complex solution, and reacting the complex solution with an amine solution corresponding to A-site cations at room temperature to generate A2BX4. According to the method, the one-step synthesis of the two-dimensional perovskite at room temperature is realized, the use of some strong corrosive solvents is avoided, the size of the perovskite can be precisely regulated in a wide range, and the perovskite can be further processed into ink or slurry, so that a large-area and uniform two-dimensional perovskite thin film can be prepared through spraying, printing and other processes; and great convenience is provided for construction of large-area photoelectric devices and promotion of industrial development of the large-area photoelectric devices.