44 results about "Titanium disulfide" patented technology

The invention relates to a preparation method of a titanium disulfide nanosheet/quantum dot composite mercury ion fluorescent probe, which comprises the following steps: hydrothermal synthesis is carried out on a raw material titanium disulfide to prepare lamellar-structure TiS2 nanosheets, and an ultrasonic-assisted chemical process is carried out to prepare TiS2 fluorescent quantum dots; a terminal amino group of single-chain oligodeoxyribonudeotide is combined with a carboxy group on the TiS2QDs surface stabilizer molecules to form ODN-modified TiS2QDs, wherein the ODN can be attached to the TiS2 nanosheets under the action of intermolecular force, so that the TiS2QDs indirectly contact the nanosheets to generate fluorescent resonance energy transfer, thereby causing TiS2QDs fluorescent quenching; Hg<2+> can be specifically combined with thymine base on the single chain ODN to form a T-Hg<2+>-T structure, so that the ODN departs from the TiS2 nanosheet surface, and the TiS2QDs also depart, thereby causing fluorescent restoration; and the relationship between the fluorescence intensity and Hg<2+> concentration of the system is fitted to construct the Hg<2+> fluorescent probe based on the titanium disulfide nanosheet/quantum dot composite. The method implements composite construction of the ionic fluorescent probe from the titanium disulfide nanosheet/quantum dot composite and single-chain ODN.

The invention provides a perovskite solar cell with black phosphorus being a hole transfer layer. A perovskite structure light-absorption layer, an electron transfer layer and a transparent conductive electrode are arranged in sequence on the black phosphorus hole transfer layer; and a positive electrode is prepared on the back surface of the black phosphorus hole transfer layer. The black phosphorus hole transfer layer, compared with an organic matter hole transfer layer, has more excellent chemical stability and lower cost, and improves output power and photoelectric conversion efficiency of the solar cell; and furthermore, titanium disulfide is doped in the black phosphorus hole transfer layer, and titanium disulfide molecules can be nested easily in defect positions of black phosphorus crystal, thereby reducing crystal defect of the black phosphorus hole transfer layer and furthermore, improving photoelectric conversion efficiency.

The invention discloses a titanium disulfide nanosheet and a preparation method thereof. An accordion-shaped titanium carbide material prepared through etching Ti3SiC2, Ti3AlC2 or Ti2AlC ceramic powder material by hydrofluoric acid is used as a raw material, and the two-dimensional titanium disulfide nanosheet can be prepared by high-temperature processing on hydrogen sulfide gas and subsequent liquid-phase ultrasonic stripping. The two-dimensional titanium disulfide nanosheet has relatively high specific capacity, favorable rate performance and charge-discharge cycle performance when used as a lithium ion battery negative electrode material.

The present invention relates to the field of solar cell technology and provides a titanium disulfide nano sheet/graphene composite material counter electrode preparation method. The method comprises the steps of (1) taking graphene oxide, titanium powder and sulfur powder as precursors to experience mechanical milling mixing, (2) allowing the mixture obtained in step (1) to experience high-temperature annealing under an inert atmosphere, and cooling the mixture to a room temperature to obtain a composite material whose sulfide nano sheet vertically grows on a graphene surface, (3) uniformly grinding the obtained composite material and a binder, and coating slurry to a conductive layer, and (4) allowing the conductive layer which is coated by the slurry obtained in step (3) to experience heating and annealing processing under the protection of the inert atmosphere, and cooling the conductive layer to the room temperature to obtain a target counter electrode. According to the method, the preparation process is simple, the cost of a raw material is low, the method is suitable for high-volume industrial preparation, compared with a traditional platinum counter electrode, the platinum counter electrode with high price, insufficient resource and poor stability can be substituted, and the method has an important meaning for the reduction of the cost of a dye-sensitized solar cell.

The invention discloses a preparation method of high-purity and high-crystallinity titanium disulfide nanometer plates. A layer-like TiS2 nanometer plate has good electronic mobility and good intercalation performance and is applicable to a cathode material of a lithium ion battery, a super capacitor and the like. By adopting a two-step liquid-phase colloid synthesis technology, the preparation method can be used for synthesizing hexagonal crystal system type high-purity high-crystallinity TiS2 nanometer plates through reaction of a titanium source, a sulfur source and a surfactant. The preparation method comprises the following steps: firstly uniformly mixing the titanium source with the surfactant, then filling the sulfur source, heating to a specified temperature and preserving heat for a certain time so as to generate the high-purity high-crystallinity TiS2 nanometer plates different in thickness. The preparation method disclosed by the invention is moderate in reaction condition, simple in preparation process, easy to control and good in repeatability. The TiS2 nanometer plates obtained through the preparation method disclosed by the invention are uniform in size and shape, controllable in size, good in crystallinity and high in purity.

The invention discloses a method for synthesizing a titanium dioxide (TiO2)/ titanium disulfide (TiS2) composite material by using an one-step vulcanization method. The method for synthesizing the TiO2/ TiS2 composite material comprises the steps of adding butyl titanate dropwise into an ethanol solution to form a mixed solution A, adding ethanol into deionized water to form a mixed solution B, adding the mixed solution A dropwise to the mixed solution B, and sonicating the obtained mixture with ultrasonic waves to obtain a transparent solution C; adjusting the pH of the solution C to 6, and obtaining a solution D; adding the solution D into a inner container made of polytetrafluoroethylene, and controlling the filling ratio for a reaction; after the reaction is completed, washing, drying, and grinding so as to obtain a TiO2 precursor; placing the TiO2 precursor and thioacetamide in a porcelain boat, and covering the porcelain boat with a cover; putting the whole porcelain boat with the cover into a low-temperature tube furnace for a sintering reaction; after the temperature drops to a room temperature, taking out the sample of TiO2 precursor and thioacetamide, grinding the sample into a powder sample, and obtaining the TiO2/ TiS2 composite material. The method for synthesizing the TiO2/ TiS2 composite material has the advantages of being simple and short in period, the block size of the prepared material is ten to several hundred nanometers, and the prepared material has the advantages of being high in purity, high in crystallinity and even in morphology.

The invention discloses a doping type lithium battery anode material. The doping type lithium battery anode material contains the following components in percentage by weight: 92wt%-96wt% of a ternary material and 4wt%-8wt% of a doping material, wherein the doping material is a mixture of at least two of ferrous sulfide, manganese sulfide and titanium disulfide. The doping type lithium battery anode material is high in monomer energy density, the electrode polarization phenomenon after a lithium battery is repeatedly charged at a high temperature is relatively high, and the working time and service life of the lithium battery at high temperature can be effectively prolonged.

The invention discloses an anode material used for a rechargeable aqueous solution zinc ion battery, characterized in that the anode material is titanium disulfide TiS2 modified by other elements, a chemical expression of the anode material is MxTiS2, wherein M is the other elements, the other elements are specifically at least one of hydrogen, copper, alkali metals and alkaline-earth metals, andx is doping content of the other elements and is not more than 0.4. The invention performs modification treatment on titanium disulfide (TiS2) by adopting alkali metal or alkaline-earth metal ions (orother metal ions), so that a novel rechargeable aqueous solution zinc ion battery anode material can be obtained; and the obtained modified titanium disulfide material can be taken as the anode material to be applied to a water-based zinc-based battery, and high capacity and long circulation performance are played.

The invention relates to a preparation method of Ti2SC ceramic by microwave synthesis, which is characterized by comprising the following steps: taking titanium powder, titanium disulfide powder and graphite powder in a mole ratio of (2.5-3):3:(1.0-1.2), evenly mixing, pelleting, and carrying out microwave heating on the pellet material under the protection of inert gas which can not generate chemical reaction on the raw material and reactant, thereby synthesizing the high-purity Ti2SC ceramic. The method can be used for quickly preparing the Ti2SC ceramic powder, greatly reduces the reaction temperature and reaction time, enhances the efficiency by tens of times as compared with the traditional Ti2SC ceramic preparation method, and obtains the favorable single-phase sample.

The invention relates to a sulfur doped titanate nanotube visible light catalyst material and its preparation method, a molecular formula of the material is H2-xNaxTi4O9-ySy.H2O (0<=x<=2; 0.01<=y<=0.15). According to the preparation method, titanium disulfide and a sodium hydroxide aqueous solution are taken as raw materials, fully mixed and moved into a stainless steel reaction vessel with a teflon inner liner, a hydrothermal reaction is carried out for 10-48 hours at the temperature of 100-200 DEG C; the obtained sediment is filtered, pickled, then washed to neutrality, dried for 24-48 hours at the temperature of 50-100 DEG C to obtain the light gray powder which is sulfur doped titanate nanotube. The photocatalyst material enables wide absorption in a visible light zone, compared with the catalytic activity of undoped titanium dioxide nano-tube photocatalysts, in an extremely low sulfur doped range, the sulfur doped titanate nanotube photocatalyst presents superior visible light photocatalytic activity, and can be used in the fields of industrial waste water treatment, dye degradation and indoor harmful gas degradation and the like.

The invention discloses a method for preparing a titanium disulfide crystal and a product, and belongs to the technical field of preparation of IVB-VIA group transition metal chalcogenide. The preparation method comprises the following steps: sequentially filling a quartz tube with titanium powder and sulfur powder in a glove box, conducting standing for 1-2 hours, sealing the quartz tube, placingthe quartz tube under a baking lamp at 120 DEG C for 4-6 hours, placing the quartz tube into a tube furnace, conducting vacuumizing for three times, introducing argon, carrying out sealed reaction inthe tube furnace for 4-8 hours, and conducting cooling to room temperature to obtain titanium disulfide crystals. The titanium disulfide crystal is a 1T-TiS2 hexagonal crystal, and the space group ofthe titanium disulfide crystal is P-3m1. The crystal is of a layered structure. The length of a wafer is 10-11 [mu]m, the width of the wafer is 11-13 [mu]m, and the thickness of the wafer is 1-2 [mu]m. The method is simple and easy to operate, good in repeatability and low in cost, and the prepared TiS2 crystal has the advantages of being high in purity, complete in wafer development, uniform indistribution and the like.

The invention relates to a tetraphenylporphyrin covalent functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof, the hybrid material is obtained by a free radical addition reaction of tetraphenylporphyrin diazonium salt TPP-N2 + BF4-and sulfur atoms on the surface layer of a titanium disulfide nanosheet, and the hybrid material is a first example about the covalent functionalization of the titanium disulfide nanosheet at present. Compared with a hybrid material obtained by simply and physically mixing the two types of optical functional materials, the hybrid material obtained by bonding carbon-sulfur covalent bonds shows a remarkably enhanced saturated absorption phenomenon in a visible light range. According to the invention, chemical modification methods of titanium disulfide are enriched, and the obtained material has a wide application prospect in the photoelectric fields of nonlinear optical devices and the like.

A titanium disulfide-sulfur (TiS₂—S) composite particle contains a titanium disulfide (TiS₂) substrate having solid elemental sulfur (S) disposed directly on a surface of the TiS₂. The TiS₂ substrate has a layered crystalline hexagonal structure of space group P-3 ml and includes at least 100 distinct layers. The TiS₂ and S are present in the composite in a weight ratio (TiS₂:S) of 20:80 to 50:50. Cathodes and batteries containing the composite particle, as well as related methods, are also disclosed.

The invention discloses a method for synthesizing an organic molecular interlayer titanium disulfide compound. The method comprises the following steps of: synthesizing a pure-phase compound TiS2, grinding into powder, and preparing an organic matter solution at a certain molar concentration; weighing a proper amount of TiS2 powder, and adding the powder into the organic matter solution; and stirring fully, adding the solution into an inner container of a high-pressure autoclave, sealing, putting into a drying oven, keeping the temperature of between 120 and 150 DEG C, washing for multiple times, filtering and drying to obtain the organic molecular interlayer titanium disulfide compound. By the method, the heat conductivity of the TiS2 is reduced effectively, and a simple and quick method for improving the thermoelectric performance of the TiS2 is provided.

The invention discloses a method for synthesizing titanium disulfide by mechanical ball milling. The titanium disulfide is prepared from the steps that titanium tetrachloride and lithium sulfide are used as raw materials, titanium disulfide powder and titanium tetrachloride are added to a sealed ball milling tank according to a certain ratio under inert gas shielding, operation is performed for aperiod time in a certain rotating speed at a room temperature, after the ball milling reaction is completed, a removed mixture is distilled, filtered, washed and dried, and the titanium disulfide is obtained. The method is simple in process and high in safety.

The invention relates to preparation methods of 2D nanometer titanium disulfide and a 2D nanometer titanium disulfide film electrode, and belongs to the technical field of electrochemistry. The preparation method of 2D nanometer titanium disulfide comprises the following steps that a sulfur source, a solvent and titanium tetrachloride are added to an autoclave, and make reaction for 0.5-12 hours at the temperature of 180-300 DEG C; the sulfur source and the titanium tetrachloride is in the mol ratio of 1: (0.09-2), the amount of the solvent is 40-70% of the volume of the autoclave, the sulfursource includes thiourea or dimethylthiourea, and the solvent includes toluene or xylene. The 2D nanometer titanium disulfide film electrode and the 2D nanometer titanium disulfide flexible adhesive tape based electrode are obtained in a coating method, and the 2D nanometer titanium disulfide film electrode is also prepared in an in-situ growth method, and the electrodes are high in stability andphotoelectric performance and long in service life, and can used to replace a platinum electrode.