154 results about "Black phosphorus" patented technology

The invention relates to the technical field of nano materials and biological medicines, in particular to black phosphorus-loaded monatomic nano enzyme as well as a preparation method and application thereof. According to the monatomic nano-enzyme loaded with the black phosphorus, the monatomic nano-enzyme loaded with the black phosphorus takes a black phosphorus nanosheet as a carrier, and a metal simple substance is anchored on the surface of the carrier; wherein the metal elementary substance comprises any one of iron, cobalt and manganese. A metal active center is anchored on a black phosphorus nano-carrier, the catalytic activity of monatomic nano-enzyme and the photo-thermal conversion performance of a black phosphorus nano-material are effectively combined, the anti-tumor effect is jointly enhanced through chemical kinetic catalysis and photo-thermal, in addition, a loaded black phosphorus degradation product is mainly phosphate and has biological safety, and the application prospect is broad. The toxicity problem of the traditional nano-enzyme can be solved; the wide application is facilitated.

The invention discloses a black phosphorus-based composite material as well as a preparation method and application thereof, and relates to the technical field of black phosphorus materials. The black phosphorus-based composite material is prepared from the following raw materials: black phosphorus, nano ferroferric oxide and dopamine hydrochloride. The dopamine hydrochloride is subjected to in-situ polymerization to form polydopamine. The obtained black phosphorus-based composite material has a low friction coefficient and an excellent lubricating effect, can be used for preparing a lubricant, for example, as a lubricating additive in lubricating oil or lubricating grease, effectively improves the friction performance of the lubricant, improves the lubricating effect of the lubricant, and is suitable for lubrication of mechanical parts.

Disclosed is a biomimetic nano-delivery system, comprising an inner core formed from a black phosphorus nanosheet and a drug, and a shell formed from an M1-type macrophage membrane. The biomimetic nano-delivery system has an anti-tumor effect, has a good photothermal effect under the irradiation of a near-infrared laser, and can actively recognize tumor cells and release the drug precisely and efficiently.

The invention belongs to the technical field of lead ion detection, and particularly relates to a black phosphorus field-effect tube lead ion detector and a use method thereof. The detector comprises an insulating substrate, a gate electrode layer, a gate electrode insulating layer, a sensitive layer, a source electrode and a drain electrode. The gate electrode layer is arranged on the insulating substrate, and the sensitive layer is arranged on the gate electrode insulating layer; particularly, the sensitive layer comprises a black phosphorus material, and noble metal particles are arranged on the surface of the sensitive layer. According to the invention, black phosphorus is used as a sensitive material of the field effect transistor, the black phosphorus and lead ions have good chemical matching property, and a stable coordination effect is formed through surface phosphorus atoms and lead ions, so that the conductivity of a channel is obviously changed; in addition, precious metal particles are introduced to the surface of the black phosphorus sensitive layer, so that the selective adsorption capacity of lead ions is enhanced. In a word, high-selectivity and high-sensitivity electrical detection of lead ions can be realized, and a high-performance field-effect tube sensor platform is provided for rapid monitoring of heavy metal pollutants.

The invention belongs to the technical field of rock wool thermal insulation materials, and particularly relates to a high-strength thermal insulation rock wool board and a preparation method thereof. The high-strength thermal insulation rock wool board is prepared from the following raw materials in parts by weight: 65 to 72 parts of basalt, 10 to 15 parts of dolomite, 8 to 12 parts of iron ore, 3 to 8 parts of bauxite, 2 to 5 parts of limestone, 10 to 15 parts of aerogel powder and 4 to 7 parts of binder. The aerogel powder is prepared by the following preparation processes: mixing tetraethoxysilane, ethanol and water, adjusting the pH value to 2.5-4, and stirring under a heating condition to obtain silicon dioxide sol; the preparation method comprises the following steps: dispersing black phosphorene in water to obtain black phosphorene dispersion liquid; and mixing a black phosphorene dispersion liquid with the silicon dioxide sol to form a mixed solution, adjusting the pH value of the mixed solution to 8-10, standing, aging, freeze-drying and grinding to obtain the aerogel powder. The high-strength heat-preservation rock wool board has the advantages of low heat conductivity, low water absorption and excellent mechanical strength.

The invention discloses a photoelectric detection heterojunction, a photoelectric detection device and a preparation method and application thereof. The photoelectric detection heterojunction comprises a Van der Waals heterojunction formed by stacking a black phosphorus layer and a second-type Weel semimetal material layer. According to the technical scheme provided by the invention, the Van der Waals heterojunction photodetector based on black phosphorus-second class of Weel semimetal (BP-II WSM) is constructed, and the influence of parameters such as different types of II WSM materials, device structures, external electric fields, excitation light wavelengths and energy on device performances such as detection range, responsivity, response speed, quantum efficiency and detection rate is researched. The BP-II WSM Van der Waals heterojunction infrared photoelectric detector which has the excellent performance of giving consideration to broadband response, especially aiming at far infrared bands, being high in room temperature responsivity, high in response speed and the like is obtained.

The invention relates to a synthesis method of novel energy-saving phosphorus-doped copper oxide, a catalyst as well as a preparation method and application of the catalyst. The synthesis method comprises the following steps: S100, obtaining copper oxide nanoparticles; s200, obtaining a black phosphorus nanosheet; s300, the copper oxide nanoparticles and the black phosphorus nanosheets are mixed and then subjected to ultrasonic treatment, and phosphorus-doped copper oxide is obtained.According to the method, the phosphorus-doped copper oxide nanoparticle catalyst can be synthesized under the mild condition, and very high methanol oxidation reaction activity and formate selectivity are achieved.

The invention discloses a 3D printing stainless steel material and a preparation method thereof, and relates to the technical field of 3D printing stainless steel materials. The 3D printing stainless steel material comprises the following components in percentage by mass: less than or equal to 0.01% of carbon, less than or equal to 0.02% of silicon, less than or equal to 0.50% of manganese, 14.00-16.00% of nickel, 15.00-18.00% of chromium, 2.50-3.00% of molybdenum, less than or equal to 0.30% of niobium, 0.03-0.06% of cerium, 0.10-0.40% of a graphene material, 0.08-0.10% of a graphene coated black phosphorus composite material and the balance of iron. By preparing the graphene-coated black phosphorus composite material and cooperating with the graphene material and cerium, the comprehensive performance of the 3D printing stainless steel material is effectively improved, and finally a 3D printing product obtains higher strength and longer service life.

The application provides a preparation method of modified black phosphorus quantum dots, a nonaqueous electrolyte and a sodium ion battery thereof. The preparation method of the modified black phosphorus quantum dots comprises the following steps: S1, adding ground black phosphorus and nitrogen-containing heterocyclic ionic liquid into a solvent to obtain a reaction solution; and S2, refluxing the reaction solution in an inert atmosphere. The modified black phosphorus quantum dots are obtained by modifying the black phosphorus quantum dots by using the nitrogen-containing heterocyclic ionic liquid. When the modified black phosphorus quantum dots are applied to the nonaqueous electrolyte, the impedance of the sodium ion battery in the cycle process can be reduced, and the high-rate cycle performance and high-temperature cycle performance of the sodium ion battery can be effectively improved.

The present invention discloses a flame retardant and smoke suppressing coating, and a preparation method and application thereof. The raw materials of the coating include the following components in terms of weight percentage: 2-30% gelatin, 1-5% metal oxide functionalized black phosphorus, 5-25% kosmotropic salt, 0.1-2% antibacterial agent, and the balance water; the metal oxide functionalized black phosphorus is prepared by solvent thermal reaction using black phosphorus nanosheets, cobalt salts, ferrous salts and sodium acetate as raw materials and an organic solvent as solvent, and the mass ratio of black phosphorus nanosheets, cobalt salts and ferrous salts is 2:2.5-5:2.5-3.75. The present invention enables the coating to have excellent flame retardant properties through the interaction of the components in the above contents. The limiting oxygen index of the polyurethane foam after coating modification increases from 17.5% to 32.0%; the peak heat release rate increases from 485kW / m 2 Down to 200kW / m 2 ; Peak smoke release rate from 0.30m 2 / s dropped to 0.15m 2 / s; tensile strength increased from 0.8MPa to 1.8MPa.

The invention discloses a black phosphorus and chromium-manganese-sulfur heterojunction photocatalytic material which comprises a Cd0. 3Mn0. 7S solid solution and black scales loaded on the Cd0. 3Mn0. 7S solid solution, and the black scales account for 1% of the mass of the Cd0. 3Mn0. 7S solid solution. According to the invention, wide spectrum response is realized through loading of black phosphorus, charge separation efficiency is improved, and Cd0. 3Mn0. 7S photocatalytic hydrogen production is enhanced.

The application discloses a preparation method of a black phosphorus doped magnesium-based novel hydrogen storage material, and the method comprises the following steps: mixing and ball-milling black phosphorus micro powder and magnesium powder obtained through electrochemical exfoliation under an inert gas atmosphere, and performing ultrasonic crushing to obtain a nano Mg / BP composite material; and performing heat treatment on the nano Mg / BP composite material under an H2 atmosphere to obtain a nano MgH2 / BP hydrogen storage material. The method uses cheap magnesium powder as raw material, embeds the magnesium powder between expanded black phosphorus layers by using a simple method combining ball-milling and ultrasonic crushing, uses lone pair electrons of the black phosphorus as anchor points to solve the problem of easy agglomeration of magnesium powder nanoparticles, simultaneously uses a large specific surface area of the black phosphorus and strong physical adsorption characteristics of the black phosphorus on hydrogen to expand the capacity of the hydrogen storage material, and finally uses the attraction ability of the lone pair electrons of the black phosphorus on high-valence magnesium in magnesium hydride to weaken Mg-H bonds and effectively reduce the dehydrogenation temperature. The preparation method has the advantages of low cost, short cycle, strong repeatability and wide application prospect in the field of hydrogen energy.

This patent application discloses a preparation method, application and purification method of a boron nitride black phosphorus heterojunction type photocatalyst, the preparation method comprises: (1) weighing red phosphorus, grinding and passing through a 150-250 mesh sieve, washing and drying the portion under the sieve; (2) weighing the red phosphorus treated in step (1) and mixing it with hexagonal boron nitride in a container, wherein the mass ratio of red phosphorus to hexagonal boron nitride is 1:1-4; (3) adding ethylenediamine and dispersing it by ultrasonication for 20-60 minutes; (4) reacting the mixture in an autoclave at 150-170°C for 18-36 hours to obtain a crude product; (5) washing the obtained crude product with anhydrous ethanol and deionized water, and vacuum drying it at 35-45°C for 20-30 hours to obtain a boron nitride black phosphorus heterojunction type photocatalyst. The photocatalytic preparation method of this scheme can improve the problem of generally low catalytic efficiency of traditional photocatalysts; at the same time, h-BN / BP has excellent acid and alkali resistance; in addition, the cost is low and the preparation process is simple.

This invention belongs to the field of biomedical materials technology, and relates to a black phosphorus phthalocyanine hydrogel, its preparation method, and its application. The black phosphorus phthalocyanine hydrogel comprises black phosphorus phthalocyanine and a photocurable gel. The preparation method of black phosphorus phthalocyanine includes the following process: under acidic conditions, black phosphorus nanosheets are mixed with aminosilicon phthalocyanine, allowing the black phosphorus nanosheets and aminosilicon phthalocyanine to self-assemble to form black phosphorus phthalocyanine. This invention combines black phosphorus with aminosilicon phthalocyanine; under the action of near-infrared laser, black phosphorus and aminosilicon phthalocyanine can synergistically exert a bactericidal effect. Simultaneously, black phosphorus can degrade, and its product, phosphate, can promote bone tissue regeneration, thus more effectively treating peri-implantitis.

The present invention provides a one-dimensional silicon-doped black phosphorus fiber, a preparation method thereof, and an ultraviolet photoelectric device, comprising: (1) mixing iodine and silicon powder and placing them in a quartz tube, vacuum-sealing the quartz tube, burying the quartz tube in glass powder, heating to 700-900°C, and keeping the temperature, to obtain a silicon-iodine compound; (2) mixing amorphous red phosphorus, tin powder, and a silicon-iodine compound and placing them in a quartz tube, vacuum-sealing the quartz tube, burying the quartz tube in glass powder, heating to 620-650°C, and keeping the temperature; then cooling to 450-500°C and keeping the temperature, to obtain a one-dimensional BP-Si fiber. This method can effectively introduce silicon and realize the controllable growth of one-dimensional BP fiber, on this basis forming a Schottky junction with Ag to improve its photoelectric detection performance, which is conducive to the large-scale production and industrial application of BP-based photoelectric devices.

The invention relates to a device and a method for efficiently purifying black phosphorus based on an electromigration separation principle. According to the method, the Coulomb force borne by black phosphorus is larger than the weak acting force combined with the impurities through the designed three-area grading electric field device by means of the conductivity difference between the black phosphorus and the impurities, the black phosphorus is separated from the impurities firstly, particles are promoted to generate different movement tracks, and therefore the purposes of separation and purification are achieved, and meanwhile the integrity of a crystal structure is maintained. The core of the device is composed of three functional areas, namely a preselection area, a main selection area and a fine selection area. The uniform electric field intensity of 15-20kV / m is adopted in the pre-selection area, so that impurities such as oxides adsorbed on the surface of the black phosphorus can be effectively removed; the gradient electric field intensity of 30-40 kV / m is adopted in the main selection area, and a parallel static magnetic field of 0.5-2 T is introduced, so that metal impurities (such as tin and bismuth) and non-metal impurities (such as red phosphorus and iodine) can be effectively removed; a uniform electric field of 25-35 kV / m is adopted in the fine selection area, trace impurity elements can be finely removed, and the purity of the finally obtained crystal is larger than 99.5%.

The application belongs to the technical field of two-dimensional material preparation, and discloses a preparation method of two-dimensional tin phosphide material. In view of the problems of complex equipment, high cost and strong interface coupling existing in the preparation of two-dimensional SnP3 by using the existing molecular beam epitaxy method, the SnBi / Si (111) substrate with lamellar eutectic structure is prepared by Van der Waals extrusion, and the substrate has the functions of weak coupling interface and self-supply Sn source; the controllable epitaxial growth of two-dimensional SnP3 is realized under the condition of low-temperature chemical vapor deposition at 100 DEG C to 150 DEG C by taking black phosphorus as a phosphorus source. The application has simple process and mild conditions, and can obtain large-area and high-quality two-dimensional SnP3, and is suitable for the fields of optoelectronic devices and integrated circuits.

This invention relates to the field of oil additives for power generation, specifically a method for in-situ preparation of black phosphorus nanoparticles (BPNPs) using PVA / PAAM interpenetrating network hydrogel as a microreactor and its application as a wear-resistant additive in lubricating oils. The confinement effect of the interpenetrating network hydrogel results in uniform BPNP size and high crystallinity, thus endowing BPNPs with excellent air / water / oil stability, with an oxidation rate of <5% within 7 days. Swelling allows RP / KI to permeate uniformly and be physically embedded in the network. Subsequently, under a nitrogen protective atmosphere, photolysis of iodine ions generates solvated electrons (e). ‑ (aq) restores RP to P ‑ P ‑ The BP crystal nucleus is formed by recombination, and the IPN three-dimensional nanochannels (pore size 30~120nm) confine and inhibit excessive growth of the crystal nucleus. At the same time, the PVA hydroxyl groups and PAAm amide groups passivate the BP surface in situ through hydrogen bonding / coordination, preventing oxidation.

The application provides a black phosphorus-carbon composite material and a preparation method and application thereof. The preparation method comprises the following steps: reacting black phosphorus and carbon material in an organic amine solvent at 80-200 DEG C to obtain the black phosphorus-carbon composite material. The black phosphorus-carbon composite material is prepared by using a solvothermal method. The reaction condition is mild, the operation is simple, the equipment is simple, and the scale-up is easy. When the black phosphorus-carbon composite material is used as a negative electrode material of a lithium ion battery, the black phosphorus-carbon composite material has good rate and cycle performance.

The invention relates to the technical field of sodium ion battery processing, in particular to solid waste treatment equipment for sodium ion batteries, which comprises a main body unit, a screening unit and a grinding unit, and is characterized in that the main body unit is used for sorting pretreated waste to obtain black phosphorus powder and coarse grain shells; the screening unit is used for screening the black phosphorus powder to obtain black phosphorus powder with proper granularity; the motor drives the rotating shaft to rotate, the rotating shaft drives the rotating rod and the spiral piece to rotate through the first chain wheel and the first chain, the spiral piece drives waste to move forwards when rotating, and in the moving process, coarse grain shells move to a sorting shell outlet to be collected; the black phosphorus powder falls into the screening unit through holes in the sorting shell to be screened out to obtain proper black phosphorus powder, then the proper black phosphorus powder is ground and purified through the grinding unit, the waste mixture is sorted into all materials, follow-up treatment can be conveniently conducted on all the materials in the waste, all the materials are recycled and reused, and waste of resources is reduced.

The invention discloses femtosecond light-induced plasmon wide-spectrum ultrafast regulation and control based on black phosphorus. An exemplary black phosphorus-based spectrum modulation method comprises the following steps: emitting pump light and probe light to black phosphorus; adjusting the time delay between the pump light and the probe light; monitoring the spectrum of the black phosphorus plasmon response; and establishing a quantitative mapping model of the time delay between the pump light and the probe light and the plasmon frequency based on the time delay between the pump light and the probe light and the monitored spectrum of the black phosphorus plasmon response. According to the invention, the core defects of narrow dynamic range, limited response speed and single regulation dimension in the existing plasmon spectrum regulation technology are overcome, and broadband and high-speed spectrum dynamic reconstruction is realized through a photoinduced non-equilibrium state carrier injection mechanism.

The invention relates to a preparation method of a secondary ball-milled sulfur-doped phosphorus-carbon negative electrode material and application of the secondary ball-milled sulfur-doped phosphorus-carbon negative electrode material in a sodium-ion battery. The preparation method comprises the following steps: respectively weighing a proper amount of phosphorus source, carbon source and sulfur source according to a certain ball-to-material ratio; the phosphorus source can be selected from red phosphorus or black phosphorus, and the carbon source can be a carbon material with good conductivity and structural stability, such as graphite, carbon nanotubes, conductive carbon black and the like; the sulfur source may be a mixture of an inorganic sulfur source and a sulfur-containing biological agent. The primary ball-milling comprises the following steps: adding a phosphorus source and a carbon source into a ball-milling tank according to a certain proportion, and carrying out ball-milling treatment at a certain rotating speed for a certain time under the protection of inert gas, so that the phosphorus source and the carbon source are fully hybridized to form a phosphorus-carbon bond; and mixing the phosphorus-carbon material obtained by primary ball milling with a sulfur source, uniformly adding the mixture into the ball milling tank, carrying out secondary ball milling treatment at a certain rotating speed for a certain time under the protection of inert gas, and gradually dispersing and doping the sulfur source into the phosphorus-carbon system in the process to form the sulfur-doped phosphorus-carbon negative electrode material.

The invention discloses a black phosphorus-carbon-supramolecular composite material as well as a preparation method and application thereof. The composite material consists of black phosphorus, a carbon material and supramolecules, and is prepared by adopting a planetary ball milling method, the introduction of supramolecular cyclodextrin accelerates the hybridization of the black phosphorus-based material, enhances the action with a binder, adsorbs electrochemical by-products, and promotes flame retardance; the preparation method is simple and controllable, and the obtained composite material has high electrochemical performance and high flame-retardant efficiency, can be used as a high-safety fast-charging lithium battery negative electrode material, and effectively solves the problems of volume expansion, poor safety and the like of the existing black phosphorus-based material.

The invention discloses a method for improving the stability of metal gallium nanoparticles, which comprises the following preparation steps: S1, preparing black phosphorus nanosheets: adding black phosphorus into N-methyl pyrrolidone, carrying out ultrasonic treatment in an ice bath to obtain a dispersion liquid, centrifuging, collecting precipitates, washing the precipitates, and freeze-drying to obtain the black phosphorus nanosheets; s2, preparing modified metal gallium nanoparticles: adding liquid metal gallium elementary substances into ethylene glycol, adding diluted hydrochloric acid, performing ultrasonic treatment, adding the black phosphorus nanosheets, performing ultrasonic treatment in an ice bath, centrifuging, collecting precipitates, washing the precipitates, and performing freeze drying to obtain the black phosphorus nanosheet modified metal gallium nanoparticles. The black phosphorus nanosheet modified metal gallium nanoparticles prepared by the preparation method disclosed by the invention show excellent long-term stability and total oxidation resistance, and in addition, the black phosphorus nanosheet modified metal gallium nanoparticles also show long-term stable photo-thermal performance under near-infrared irradiation, so that the application of the black phosphorus nanosheet modified metal gallium nanoparticles in the field of biomedicine is greatly expanded.

The invention relates to an infrared polarized photoelectric detector and a preparation method thereof, and belongs to the technical field of photoelectric detection, and the preparation method comprises the following steps: 1, cleaning a substrate; 2, preparing a patterned metal electrode; step 3, preparation and transfer preparation of a two-dimensional material; respectively stripping from the blocky niobium diselenide crystal and the blocky black phosphorus crystal by adopting a mechanical stripping method to obtain a niobium diselenide sheet and a black phosphorus sheet, and respectively transferring the obtained sheets to the surface of a polydimethylsiloxane elastomer; step 4, Van der Waals assembling of the two-dimensional metal electrode; the two niobium diselenide sheets are sequentially transferred to the substrate with the patterned metal electrodes through a micromanipulation system, the two niobium diselenide sheets are aligned with the two patterned metal electrodes respectively and make close contact with the patterned metal electrodes, and a set distance is kept between the two niobium diselenide sheets; step 5; forming a heterojunction structure; the beneficial effects of the invention are that through the NbSe2-BP-NbSe2 structure, the intrinsic anisotropy of black phosphorus is utilized to respond to polarization information, and the infrared polarization detection precision is improved.

The application provides a two-dimensional black phosphorus flexible infrared detector based on a photothermal effect and a preparation method thereof, and belongs to the technical field of infrared detection. The two-dimensional black phosphorus flexible infrared detector based on the photothermal effect comprises an infrared detector substrate, a source electrode, a drain electrode and a packaging layer. The infrared detector substrate comprises a polyimide substrate, a gate electrode layer, a gate oxide layer and a black phosphorus layer which are stacked in sequence. The source electrode and the drain electrode are located on the surface of the black phosphorus layer. The packaging layer is located on the side of the black phosphorus layer of the infrared detector substrate, covers the infrared detector substrate and exposes the source electrode and the drain electrode. In the application, the polyimide substrate is high in flexibility and low in thermal conductivity. When the substrate is irradiated by infrared light, the temperature of the substrate is increased, the thermal effect is enhanced, the scattering of photons is enhanced, the mobility of carriers is reduced, the negative photoconductance generated thereby is reduced, the current of the black phosphorus transistor in the on state is reduced, and the light response rate of the infrared detector is significantly improved.

The application discloses a two-dimensional black phosphorus electro-optic modulator which comprises a two-dimensional black phosphorus capacitor, a silicon nitride ring waveguide, a silicon waveguide and a silicon dioxide substrate, and is characterized in that: the two-dimensional black phosphorus electro-optic modulator is prepared by the following method: firstly, the silicon nitride ring waveguide and the silicon waveguide are deposited downwards on the upper surface of the silicon dioxide substrate; and secondly, a two-dimensional black phosphorus capacitor is integrated above the silicon nitride ring waveguide and the silicon dioxide substrate, and the two-dimensional black phosphorus capacitor is connected with electrodes connected with a power supply; the two-dimensional black phosphorus capacitor is composed of two black phosphorus layers and an aluminum oxide layer, the aluminum oxide layer is used as a dielectric layer, and each of the upper and lower black phosphorus layers is provided with a black phosphorus layer. The electro-optic modulator has the advantages of low power consumption and large bandwidth.

The invention provides a diaphragm as well as a preparation method and application thereof, and relates to the technical field of lithium ion batteries. The preparation method of the diaphragm comprises the following steps: S1, carrying out modification treatment on black phosphorus to obtain a modified black phosphorus composite material; s2, uniformly stirring the modified black phosphorus composite material, a dispersing agent, water, a functional component, a thickening agent and a binding agent to obtain diaphragm slurry; and S3, coating the surface of a base membrane with the diaphragm slurry, and airing to obtain the diaphragm. The diaphragm provided by the invention not only can improve the wettability of the diaphragm to an electrolyte, but also can be used for transmitting lithium ions, has excellent ionic conductivity, and is beneficial to improving the cycle performance of a battery.

The ghost elimination method based on polarization-spectrum coupling of the ghost elimination method of the present application comprises a reflection layer, which reflects the radiation light of an imaged object and generates a ghost signal; a rotatable polarizer, the rotation angle theta is matched with the black phosphorus crystal axis direction of the black phosphorus spectrum polarization coupled infrared photodetector; the black phosphorus spectrum polarization coupled infrared photodetector is sequentially arranged from bottom to top as follows: SiO2 / Si substrate as an insulating support layer, graphene layer on the SiO2 / Si substrate, InSe thin film covering the graphene layer to form a type II heterojunction interface, black phosphorus layer on the InSe thin film as a core photosensitive layer, Cr / Au metal composite electrode deposited on the graphene layer and the black phosphorus layer respectively, the in-plane anisotropy ratio PER(lambda) of the black phosphorus layer changes with the wavelength, and the difference between the light response value I~alpha T 4 / PER(lambda) distinguishes the real signal from the ghost signal, and provides a miniaturized, self-driven ghost elimination system and method.