43 results about "Cadmium oxide" patented technology

The composite diaphragm for a zinc secondary battery, including: a base diaphragm and a conductive film for the zinc secondary battery, the conductive film being connected to one end of the base diaphragm. The conductive film includes a porous polymer film, and pores of the porous polymer film are filled with conductive compositions, the conductive compositions including 1-10 parts by weight of a conductive agent and 0.1-1 part by weight of an additive. The conductive agent includes at least one of graphite, conductive carbon black, acetylene black, or a graphene carbon nanotube; and the additive includes at least one of a tin powder, a tin dioxide powder, a bismuth powder, a bismuth oxide powder, an indium powder, an indium oxide powder, a lead powder, a lead oxide powder, a cadmium powder, or a cadmium oxide powder.

A method of remediating a contaminated aqueous medium includes contacting the aqueous medium with an amount of a particulate nanocomposite material that contains elemental carbon (C); an orthorhombic titanium dioxide (TiO2); a tetragonal TiO2 crystalline phase; a cubic cadmium oxide (CdO) crystalline phase; a hexagonal magnesium titanate (MgTiO3) crystalline phase; and, an orthorhombic magnesium titanate oxide (Mg0.6Ti2.4O5). Based on the total number of atoms in the nanocomposite material and as determined by energy dispersive X-ray spectroscopy, the nanocomposite material has an atomic concentration of carbon (C) of from about 1 atomic percent (at. %) to about 5 at. %; an atomic concentration of magnesium (Mg) of from about 5 to about 15 at. %; an atomic concentration of titanium (Ti) of from about 15 to about 30 at. %; and, an atomic concentration of cadmium (Cd) of from about 1 to about 10 at. %.

Magnetic particles with a highly reflective protective membrane (300), comprising: a magnetic core (100), a shell (200) formed on the outer surface of the magnetic core (100), having a multi-layer structure and comprising a first shell (210) made of a dielectric material, and a second shell (220) made of metallic material, formed on the outer surface of the first shell (210) and being a multi-layer membrane in which two or more layers (221, 222, 223) of mutually different metallic materials are stacked on top of each other, and a highly reflective protective membrane (300) which is in contact with the second shell (220) and is formed on the outer surface of the shell (200), wherein the highly reflective protective membrane (300) comprises a multi-layer structure comprising a low refractive index membrane (310) formed on the outer surface of the shell (200) and having an optical thickness between 0.15 to 0.35 of the wavelength, and a high refractive index membrane (320) formed on the outer surface of the low refractive index membrane (310) and having an optical thickness between 0.15 to 0.35 of the wavelength, the dielectric material is one or more materials selected from a group comprising titanium dioxide, aluminum oxide, calcium carbonate, zirconium oxide, magnesium fluoride, zinc oxide and zinc sulfide, the metallic material is one or more materials selected from a group comprising copper, nickel, gold, platinum, silver, aluminum and chromium, the low refractive index membrane (310) consists of one or more materials selected from a group comprising silicon dioxide, magnesium fluoride, polystyrene, polymethyl methacrylate, polystyrene-co-butadiene, vanadium pentoxide, cadmium oxide, polyisobutylene and polyethylene, and the high refractive index membrane (320) consists of one or more materials selected from a group comprising titanium dioxide, aluminum oxide, zinc oxide, zirconium oxide and chromium oxide.

Provided is an inorganic fiber or inorganic flake having excellent neutron shielding properties. A formulation composed of a base component in which SiO2 and Al2O3 are the main components (in which the total mass ratio of SiO2 and Al2O3 in the base component is 0.60 or more) and a neutron shielding component composed of at least one of gadolinium, gadolinium oxide, samarium, samarium oxide, cadmium, or cadmium oxide is prepared in a ratio of 50 to 90 parts by mass of the base component and 10 to 50 parts by mass of the neutron shielding component, and then melted, thereby obtaining a good amorphous inorganic fiber and inorganic flake.

The invention provides a high-crystallinity near-infrared emission wurtzite CdS quantum dot / Zn < 2 + > modified CdS quantum dot as well as a preparation method and application thereof, and belongs to the technical field of semiconductor quantum dots. The preparation method comprises the following steps: mixing cadmium oxide, a very small amount of zinc acetate, oleic acid and octadecene, heating for degassing, heating to a reaction temperature, and adding an S-ODE precursor for reaction to obtain the zinc-modified wurtzite CdS quantum dot. The CdS quantum dots synthesized under the condition of high concentration are of a wurtzite structure and have high crystallinity, the particle size is remarkably increased, a small amount of zinc acetate is added, disordered nucleation and growth processes under a high-concentration reaction system are effectively separated through a surface adsorption process, and the monodispersed wurtzite CdS quantum dots are obtained. According to the invention, the LED device is prepared by integrating the optimized CdS quantum dots and the 450nm purple light chip, and the dual functions of visible light illumination and night vision application are realized.

The invention discloses a method for determining the content of cadmium in edible salt through a coprecipitation atomic absorption graphite furnace method, and belongs to the technical field of trace detection. According to the characteristic that cadmium ions can generate cadmium hydroxide under an alkaline condition, ferric nitrate is used as a coprecipitator, the pH value is adjusted to 9.0 by using ammonia water, the generated cadmium hydroxide and ferric hydroxide are co-precipitated, a supernatant is removed, the precipitate is acidified, an atomic absorption spectrophotometer graphite furnace method is used for determination, and a result shows that the adding standard recovery rate of a sample is 104%; and the relative standard deviation is 2.4%. And the relative standard deviation between the ICP-MS determination result and the determination result of the method is 0.03%, which indicates that the interference of the method is not obvious. According to the method, the interference of sodium chloride in the sample is eliminated, the cadmium element in the sample can be enriched, and the cadmium content in the test sample is increased, so that the detection lower limit of the determination of the cadmium content in the edible salt is reduced, and the determination accuracy and precision are improved.

The invention belongs to the technical field of metal surface treatment, and particularly relates to application of an HEDP cadmium plating improvement process to a connector. In order to meet the requirements of the cyanide-free cadmium plating process of the aerospace electric connector and the limitation of cyanide, the cyanide-free cadmium plating bath solution provided by the invention comprises the main components of cadmium oxide, HEDP, KOH, a softening agent and a brightening agent, the softening agent is triethanolamine, citric acid and octylphenol polyoxyethylene ether, and the brightening agent is nickel sulfate and Turkey butter. By the adoption of the method, the plating speed can be increased, highly toxic cyanide is completely abandoned, and meanwhile the core indexes such as the uniform plating capacity and the deep plating capacity of the plating solution can be comparable with those of cyaniding cadmium plating.

This invention discloses a cadmium telluride thin-film solar cell with a cadmium oxide passivation layer and its preparation method, including the following steps: (1) Pretreatment: The cadmium telluride thin film covered by the cadmium oxide layer formed by CdCl2 annealing is placed in a vacuum tube furnace, and the vacuum is drawn to a negative pressure state to remove residual O2; (2) Reduction treatment: The vacuum pump is turned off, an inert gas is introduced, the temperature is raised to the reduction reaction temperature and kept at the temperature, and then a mixture of reducing gas and inert gas is introduced under positive pressure to carry out the reduction reaction; the reduction reaction temperature is 200~400℃; the ratio of reducing gas to inert gas mixture is 1-20%; the reaction time is 5-30min; (3) Posttreatment: The heating is turned off, an inert gas is introduced to cool to room temperature to form a cadmium oxide layer covered by a metal Cd layer.

The invention relates to the technical field of preparation of high-purity inorganic nano materials, and discloses a controllable preparation method of a high-purity cadmium telluride nanocrystal, which comprises the following steps: pre-dissolving a conjugated acid salt in a water-phase reaction system, and reacting a cadmium salt precursor with a tellurium source precursor when ammonia gas is introduced as an inorganic gaseous ligand; a pH buffer system is constructed by ammonia gas and conjugated acid salt, and transient stability is provided for the generated cadmium telluride nanocrystals within the pH range for inhibiting the cadmium hydroxide impure phase; according to the method disclosed by the invention, an in-situ pH buffer system is constructed, so that a ligand stabilization function of the ammonia gas is decoupled from an alkaline side reaction phase of the ammonia gas, agglomeration is prevented while an impure phase is inhibited, the ligand and the salt are thoroughly removed after the reaction, and the technical problem that controllability and high purity cannot be obtained at the same time in an inorganic aqueous phase method is solved.

Disclosed is a conductive film including a porous polymer film, and pores of the porous polymer film are filled with conductive compositions, the conductive compositions including 1-10 parts by weight of a conductive agent and 0.1-1 part by weight of an additive. The conductive agent includes at least one of graphite, conductive carbon black, acetylene black, or a graphene carbon nanotube; and the additive includes at least one of a tin powder, a tin dioxide powder, a bismuth powder, a bismuth oxide powder, an indium powder, an indium oxide powder, a lead powder, a lead oxide powder, a cadmium powder, or a cadmium oxide powder. The zinc secondary battery is wrapped with a composite diaphragm around the outer perimeter of the electrical core, which solves a problem that an existing conductive tinned copper foil is unable to be welded with a battery diaphragm.

The present invention relates to the field of quantum dot materials, and in particular to a lens material based on quantum dots, and a preparation method and application thereof. The present application discloses a lens material based on quantum dots, and the raw materials for preparation include: a quantum dot precursor, an acrylic compound, an initiator, and a quantum dot stabilizer. The raw materials for preparing the quantum dot precursor include: a cadmium source solution, a sulfur source solution, an oxysilane substance, and a sulfonate substance. The cadmium source is selected from at least one of cadmium oxide, cadmium nitrate, and cadmium chloride; the sulfur source is selected from at least one of sulfur powder, sodium sulfide, cysteine, and thioacetamide. The polymer coating can effectively isolate oxygen, moisture, etc., avoid quantum dot fluorescence quenching and inactivation, and improve the stability of the quantum dot lens material. Moreover, the luminous efficiency is high, the photoluminescence quantum yield (PLQY) is greater than 60%, the brightness decay after photothermal aging is less than 15%, and the transmittance is greater than 90%.

The invention relates to a preparation method of CdZnS / ZnSe / ZnS parabolic energy band structure quantum dots. The preparation method comprises the following steps: preparing an S-ODE precursor solution, an S-TOP precursor solution and a Se-TBP precursor solution; preparing a CdZnS core solution from cadmium oxide, zinc acetate, oleic acid, 1-octadecene and the S-ODE precursor solution; preparing a CdZnS / ZnSe solution from zinc acetate, oleic acid, 1-octadecene, the CdZnS core solution and the Se-TBP precursor solution; the preparation method comprises the following steps: preparing a CdZnS / ZnSe / ZnS parabolic band structure quantum dot solution from zinc acetate, oleic acid, a 1-octadecene CdZnS / ZnSe solution and an S-TOP precursor solution; according to the invention, efficient and stable pure blue light emission is realized through a preparation method of three-shell collaborative design of a CdZnS core, a ZnSe intermediate layer and a ZnS shell.

The present invention belongs to the field of surface treatment and discloses a method for high-precision plating of a cadmium layer with a deep hole structure having a high aspect ratio, comprising the following steps: cleaning excess material from the surface of a product; electrochemically degreasing the product; weakly corroding the electrochemically degreased product; neutralizing the weakly corroded product; plating cadmium on the neutralized product; performing dimensional inspection on a position where the product requires dimensional inspection; photochemically treating the product after measurement; and passivating the photochemically treated product; wherein during the cadmium plating, the temperature of the cadmium plating solution is 15°C to 40°C. The solution composition is 140g / L~180g / L sodium cyanide, 30g / L~50g / L cadmium oxide, 15g / L~25g / L sodium hydroxide, 30g / L~50g / L ammonium sulfate, and 0.5g / L~1.5g / L nickel sulfate; the electroplating method adopts repeated alternation of impact current / normal current; the cadmium layer obtained by this method has uniform thickness, and any plane is tested multiple times using three coordinates. The measured values are all within the tolerance range of 0.003mm, and the coating adhesion and appearance meet the use requirements.

The application belongs to the field of composite materials and relates to a novel cadmium hydroxide (Cd(OH)2) doped molybdenum oxide photoelectrocatalyst and a preparation method thereof. A cadmium hydroxide doped molybdenum oxide (MoO 3‑x ) film (Cd(OH)2@MoO 3‑x ) is prepared by using a wet chemical one-step electrochemical codeposition method. The introduction of cadmium hydroxide not only significantly improves the light absorption characteristics of the molybdenum oxide material, but also significantly improves the performance of the molybdenum oxide photoelectrocatalytic water splitting for hydrogen production. The preparation process disclosed by the application is simple, has a short time course, simple instruments and equipment, and low cost of non-noble metals, and the prepared Cd(OH)2@MoO 3‑x film has excellent photoelectrocatalytic performance and good application prospect.

The invention relates to the field of acetylene removal catalysts, and particularly discloses a catalyst for reducing acetylene content in calcium carbide tail gas and a preparation method and application thereof. The catalyst for reducing the acetylene content in the calcium carbide tail gas comprises an inhibition type carrier and an active component loaded on the inhibition type carrier in a protein form, the inhibition type carrier is formed by compounding an inhibition component and a carrier component; the catalyst comprises the following components in percentage by mass: 0.1-1% of an active component, 20-30% of an inhibiting component and the balance of a carrier component, the active component is selected from one or more of palladium, ruthenium and nickel; the inhibiting component is selected from one or more of zinc oxide, gallium oxide and cadmium oxide; the carrier component is selected from one or more of aluminum oxide, zirconium oxide and aluminum-magnesium composite oxide. The catalyst disclosed by the invention has the advantage of reducing the generation of methane byproducts while having an excellent acetylene removal catalytic effect.

A Mg0.6Ti2.4O5 / MgTiO3 / tetragonal TiO2 / orthorhombic TiO2 / CdO / C nanocomposite material includes an orthorhombic Mg0.6Ti2.4O5 phase; a hexagonal magnesium titanate (MgTiO3) phase, a tetragonal titanium dioxide (TiO2) phase, a cubic cadmium Oxide (CdO) phase, and an orthorhombic TiO2 phase. The Mg0.6Ti2.4O5 / MgTiO3 / Tetragonal TiO2 / Orthorhombic TiO2 / CdO / C nanocomposite material has a granular morphology including spherical particles having an average particle diameter ranging from 50 nanometer (nm) to 130 nm. Furthermore, a method of production includes calcination of metal precursors.

The present invention provides an electrochromic device containing a transparent CdO layer, comprising a first electrode, a gel electrolyte, and a second electrode. The first electrode comprises a first FTO conductive glass, a first cadmium oxide layer disposed on the first FTO conductive glass layer, and an electrochromic layer disposed on the first cadmium oxide layer. The second electrode comprises a second FTO conductive glass, a second cadmium oxide layer disposed on the FTO conductive glass, and a counter electrode material layer disposed on the second cadmium oxide layer. The gel electrolyte is positioned between the electrochromic layer of the first electrode and the counter electrode material layer of the second electrode. By using a cadmium oxide thin film to simultaneously adsorb electrochromic molecules and counter electrode molecules, the present invention effectively improves the performance of the electrochromic device, resulting in advantages such as good color change uniformity, a good memory effect, and a short response time.

Provided are compositions and associated methods for producing elastomeric rubber gloves with improved strength and flexibility at desirable glove palm thicknesses. An example elastomeric rubber glove comprises a substrate formed from a composition comprising a synthetic rubber latex, and an ionic liquid. The ionic liquid may comprise a combination of one or more alkyl imidazole ionic salts. The composition may comprise one or more metal oxides, including at least one of zinc oxide, magnesium oxide, cadmium oxide, and aluminum oxide. The synthetic rubber latex compositions were found to yield a material with strength and flexibility characteristics comparable to natural latex gloves of a greater thickness. The described gloves may also be cured without the addition of Sulphur and other vulcanization or rubber accelerators, further reducing the risk of allergies and costs of production.

The invention discloses a preparation method of a cadmium oxide / cadmium sulfide / aluminum nano-structure photocatalytic material. The preparation method comprises the following steps: firstly, preparing a cadmium oxide flower-shaped nano-structure on conductive glass by utilizing an electro-deposition method; then growing a hydrangea-shaped cadmium sulfide nano-structure on the surface of the cadmium oxide flower-shaped nano-structure by utilizing a chemical bath deposition method; and finally, depositing aluminum nanoparticles on the surface of the cadmium oxide / cadmium sulfide nano-structure by using a magnetron sputtering method to prepare the cadmium oxide / cadmium sulfide / aluminum nano-structure photocatalytic material. The cadmium sulfide nanostructure with matched energy bands and the aluminum nanoparticles with the surface plasma resonance effect are used for cooperatively modifying the cadmium oxide nanostructure, the solar energy utilization rate and the photon-generated carrier separation efficiency are effectively improved, and excellent photoelectrochemical water decomposition electricity and hydrogen production performance is shown. The method is simple in process, the size of the obtained cadmium oxide / cadmium sulfide / aluminum heterostructure is nanoscale, and the cadmium oxide / cadmium sulfide / aluminum heterostructure is a novel nano-structure photocatalytic material and is suitable for the field of photoelectrochemical water decomposition.

The invention provides a preparation method of cadmium fluoride for a thorium-based molten salt reactor, aiming at overcoming the defect that the cadmium fluoride meeting the technical index requirements of the thorium-based molten salt reactor is difficult to industrially produce due to the reasons of raw material purity, process parameters and the like in the existing preparation method. The method comprises the following steps: dissolving and filtering cadmium oxide by using ammonia water to remove alkaline insoluble impurities, stabilizing the crystal form of cadmium fluoride by gradient drying, and removing protective ammonium bifluoride impurities at high temperature to obtain a cadmium fluoride product meeting the technical index requirements of a thorium-based molten salt reactor.

The invention relates to the technical field of photoelectric detection, and discloses a doped cadmium oxide quantum dot film, a preparation method thereof and an infrared detector. The method comprises the following steps: mixing a cadmium oxide precursor, an indium doping source, a fluorine doping source, a surface ligand and an organic solvent to form a reaction system, and degassing at a preset first temperature; raising the temperature to a preset second temperature under the protection of inert gas, and keeping the temperature, so that the cadmium oxide precursor is nucleated and grows; after nucleation is completed, quenching, precipitating, washing and re-dispersing to obtain fluorine and indium doped cadmium oxide quantum dot dispersion liquid; cleaning and activating an indium tin oxide interdigital electrode substrate, and preparing a methanol solution containing a short-chain ligand; and depositing the quantum dot dispersion liquid on a treated indium tin oxide interdigital electrode substrate to form an initial quantum dot film, carrying out ligand exchange by using a methanol solution containing a short-chain ligand, and annealing to obtain the fluorine and indium doped cadmium oxide quantum dot film. The doped cadmium oxide quantum dot film prepared by the method is safer and more stable, and the performance can be regulated and controlled.

The invention relates to a preparation method of a cadmium oxide / titanium nitride / sulfur indium cadmium heterostructure nano photocatalytic material, which comprises the following steps: by taking cadmium nitrate tetrahydrate and ammonium chloride as raw materials, depositing a cadmium hydroxide nano structure on the surface of conductive glass by adopting an electrochemical deposition method, and drying and calcining the cadmium hydroxide nano structure to obtain a cadmium oxide nano structure; coating the surface of the cadmium oxide nanostructure with a titanium nitride solution by adopting a spin-coating method, and drying to obtain a cadmium oxide / titanium nitride heterostructure; a water bath method is adopted, cadmium nitrate hydrate, thioacetamide and indium nitrate serve as raw materials, sulfur-indium-cadmium nanoparticles are loaded on the surface of the cadmium oxide / titanium nitride heterostructure, and the cadmium oxide / titanium nitride / sulfur-indium-cadmium heterostructure nanometer photocatalytic material is obtained after drying. Bidirectional hot electrons and carriers are generated by utilizing the surface plasma resonance effect of titanium nitride nanoparticles, and by combining a stepped charge channel of cadmium oxide and sulfur indium cadmium, the solar energy utilization rate and the photon-generated carrier separation efficiency are improved, and the performance of producing electricity and hydrogen by decomposing water through cadmium oxide is improved.

The invention discloses a diluted magnetic semiconductor with a Cr-doped CdS nanostructure and a preparation method of the diluted magnetic semiconductor. The diluted magnetic semiconductor is composed of three elements of Cr, Cd and S, and the chemical general formula of the diluted magnetic semiconductor is Cd1-xCrxS. According to the diluted magnetic semiconductor, cadmium oxide, powdered sulfur and chromium chloride hexahydrate are used as raw materials, ethanolamine and ethylenediamine are used as organic solvents, and the diluted magnetic semiconductor with the Cr-doped CdS nano structure is synthesized through a solvothermal method. The nanoparticles are small in particle size, can generate strong ferromagnetic properties, are excellent in saturation magnetization, and can be widely applied to electronic components, semiconductor chips and integrated circuits.

Provided are compositions and associated methods for producing elastomeric rubber gloves with improved strength and flexibility at desirable glove palm thicknesses. An example elastomeric rubber glove comprises a substrate formed from a composition comprising a synthetic rubber latex, and an ionic liquid. The ionic liquid may comprise a combination of one or more alkyl imidazole ionic salts. The composition may comprise one or more metal oxides, including at least one of zinc oxide, magnesium oxide, cadmium oxide, and aluminum oxide. The synthetic rubber latex compositions were found to yield a material with strength and flexibility characteristics comparable to natural latex gloves of a greater thickness. The described gloves may also be cured without the addition of Sulphur and other vulcanization or rubber accelerators, further reducing the risk of allergies and costs of production.

The invention discloses a FeFET transistor and a related integrated circuit. The channel layer of the transistor (1612a) may be formed of an amorphous oxide semiconductor. Examples of amorphous oxide semiconductors that can be utilized include indium oxide, indium gallium zinc oxide (IGZO), zinc tin oxide (ZTO), indium zinc oxide (IZO), gallium zinc oxide (GZO), aluminum zinc oxide (AZO), cadmium oxide, hafnium indium zinc oxide (HIZO), tin oxide, and indium tin zinc oxide (ITZO), etc. The amorphous oxide semiconductor channel layer may also be doped with elements such as gallium, indium, zinc, tin, hafnium, silicon, aluminum to optimize carrier concentration and mobility.

The present application relates to the field of glass powder materials, in particular to H01B1 / 22, more particularly, the present application relates to a single glass powder, front silver paste, solar cell and preparation method.Single glass powder, including CuO, SiO2, ZnO, PbO, MgO, MoO3, Li2O, WO3, Bi2O3, TeO2, CdO one or more kinds;The glass softening temperature of the single glass powder is 300-550 DEG C.The glass powder has low contact resistance, high fill factor, high open circuit voltage and high conversion efficiency, and the glass component particularly contains cadmium oxide, and the maximum advantage is that it has a wide sintering window and a suitable corrosion rate.

The invention discloses a preparation method of a carbon quantum dot reinforced hydrotalcite material and application of the carbon quantum dot reinforced hydrotalcite material as a heavy metal adsorbent. The method comprises the following steps: adding hydrotalcite and carbon quantum dots into ultrapure water, carrying out vigorous stirring reaction at room temperature, centrifuging, washing with ethanol, and drying. According to the invention, hydrotalcite is subjected to non-covalent functionalization by using carbon quantum dots rich in-NH2 and-COOH, such that the carbon quantum dot reinforced hydrotalcite material is obtained. -NH2 and-COOH in the carbon quantum dots have relatively strong binding capacity to calcium ions dissolved out from the hydrotalcite laminate, and after the divalent metal is coordinated with the groups on the surfaces of the carbon quantum dots, more calcium vacancies with lower energy barriers are formed on the hydrotalcite laminate. The existence of calcium vacancies is beneficial to rapid generation of isomorphous substitution and generation of a cadmium hydroxide molecular form, and the adsorption speed and the adsorption efficiency of the material are improved. The carbon quantum dot reinforced hydrotalcite material has an important application prospect in the field of heavy metal pollution emergency treatment or high-performance adsorbent development.

The present invention belongs to the field of industrial control technology, and discloses a material feeding control method, system, device and medium for a cadmium oxide production line, including: collecting sensor data corresponding to various indicators in the production process, where the sensor data is first sensor data collected at multiple time scales or second sensor data collected at a single time scale; fusing the first sensor data to obtain a multi-scale fusion vector of each indicator collected at multiple time scales; inputting all the multi-scale fusion vectors and the second sensor data into an LSTM network to obtain time series features output by the LSTM network; inputting the time series features into a BP neural network to obtain optimized PID parameters output by the BP neural network; and inputting the optimized PID parameters into a PID controller to optimize and adjust the feeding ratio of the material. It can improve the accuracy and stability of the feeding control of the cadmium oxide production line.

The invention provides a method for green synthesis of CdSe quantum dots by a low-temperature one-pot method, and relates to the technical field of nano semiconductor materials, and the method comprises the following steps: mixing cadmium oxide, selenium powder and long-chain fatty acid in an air atmosphere, adding a non-coordination solvent with a boiling point greater than or equal to 250 DEG C, carrying out a stirring reaction at 160-250 DEG C for 5-180 min, cooling, and purifying to obtain the CdSe quantum dots. The quantum dot synthesized by the method is narrow in half-peak width (24 nm), large in controllable range (485-650 nm) and excellent in performance, and powerful support is provided for wide application of the colloidal cadmium selenide quantum dot in the fields of photoelectric devices, biological imaging, display technologies and the like; and the method is easy for large-scale production, can meet the requirements of industrial large-scale preparation, and has good economic and social benefits.

The application provides a low-temperature one-pot green synthesis method of CdSe quantum dots, and relates to the technical field of nanometer semiconductor materials, wherein cadmium oxide, selenium powder and long-chain fatty acid are mixed under an air atmosphere, a non-coordination solvent with a boiling point of greater than or equal to 250 DEG C is added, and stirring reaction is carried out at 160-250 DEG C for 5-180 minutes; and CdSe quantum dots are obtained after purification after cooling. The synthesized quantum dots have a narrow half-peak width (24 nm) and a large controllable range (485-650 nm), and have excellent performance, thereby providing strong support for the wide application of colloidal cadmium selenide quantum dots in the fields of optoelectronic devices, biological imaging and display technology; and the method is easy to scale up, can meet the needs of industrial large-scale preparation, and has good economic and social benefits.