596 results about "Nanorod" patented technology

The invention belongs to the technical field of conductive polymer materials, and particularly relates to a three-dimensional polypyrrole conductive material and a preparation method and application thereof. The preparation method of the three-dimensional polypyrrole conductive material comprises the following steps: (1) preparing a metal copper quantum dot and graphene oxide mixed dispersion liquid; (2) adding an oxidizing agent to obtain a reaction solution; (3) adding a pyrrole monomer, and carrying out a polymerization reaction to obtain a graphene oxide / polypyrrole composite dispersion liquid; and (4) adding a reducing agent to reduce the graphene oxide to obtain the three-dimensional polypyrrole conductive material. After the metal copper quantum dots are loaded on the graphene oxide sheet layer, the graphene oxide sheet layer becomes a structure-oriented core in subsequent polymerization, and finally the stable three-dimensional conductive composite material with graphene as a framework and polypyrrole nanosheets as connection points is formed. Compared with a traditional three-dimensional material formed by overlapping and integrating a two-dimensional graphene sheet layer and a conductive nanowire / nanorod, the three-dimensional material with the structure can form an efficient conductive path more easily under the condition of low filler content.

The invention relates to a surface-enhanced Raman scattering detection substrate, a preparation method thereof and a Raman scattering detection method. The surface-enhanced Raman scattering detection substrate comprises a silicon substrate, wherein at least one surface of the silicon substrate is provided with a functional area; the plurality of silicon nanorods are positioned in the functional region; the silicon nanorod comprises a main body part and a head part, the main body part is located between the head part and the silicon substrate, and the main body part is connected with the head part and the silicon substrate; the radial width of the head part is gradually reduced in the direction perpendicular to and away from the surface of the silicon substrate; the total area of orthographic projections of the silicon nanorods on the silicon substrate accounts for 1%-10% of the area of the functional area. According to the surface-enhanced Raman scattering detection substrate, enrichment of molecules to be detected in a three-dimensional space can be achieved, the signal enhancement capacity is high, and the detection sensitivity of target molecules can be remarkably improved.

The invention discloses a preparation method of a Pt-CdZnS composite photocatalytic hydrogen production material, which is characterized in that Pt is deposited on a Cd0. 6Zn0. 4S nanorod by using a low-temperature vacuum reduction synthesis method to prepare the Pt-CdZnS composite material. The photocatalytic hydrogen production performance of the sample prepared by the method can be up to 10.25 mmol / g <-1 > h <-1 >, which is about 13.67 times that of pure Cd0. 6Zn0. 4S (0.75 mmol / g <-1 > h <-1 >).

The invention discloses an intelligent purification coating with a bionic pulmonary membrane type respiratory metabolism function. The intelligent purification coating comprises a sensing and adsorption layer, a driving and transportation layer and a catalysis and metabolism unit, the sensing and adsorption layer is composed of a chemical heterojunction network formed by two-dimensional transition metal carbonitride MXene and a zeolite imidazate framework structure material through an in-situ coordination reaction of metal ions and hydroxyl groups on the surface of MXene; the driving and transporting layer takes a cross-linked liquid crystal elastomer network as an intelligent response matrix, and high-length-diameter-ratio magnetic ferroferric oxide nanorods of which the surfaces are modified by a silane coupling agent are uniformly dispersed and embedded into the matrix; and the catalysis and metabolism layer is anchored on a preset key mass transfer path in the driving and transporting layer in a discrete metabolism island form. According to the coating, various volatile organic compounds (VOCs) and enzyme-light synergistic deep mineralization can be realized under mild conditions, and the energy metabolism function of mitochondria can be accurately simulated.

The invention belongs to the technical field of hydrolysis hydrogen production, and particularly relates to a preparation method of a CoPx-CeO2 loaded platinum catalyst with a core-shell structure and application of the CoPx-CeO2 loaded platinum catalyst in seawater electrolysis hydrogen production. A Co (CO3) 0.5 (OH) nanorod precursor is prepared on foamed nickel through a hydrothermal method and then calcined to obtain CoPx, a CeO2 film is electrically deposited to obtain a CoPx-CeO2 composite carrier, and platinum is impregnated and loaded to obtain the CoPx-CeO2-Pt catalyst. The catalyst shows excellent hydrogen evolution catalytic activity in seawater, and the CoPx-CeO2 composite carrier prevents Pt nano-particles from being agglomerated through interaction of metal carriers, so that the atom utilization rate of Pt is increased. Meanwhile, the CeO2 film actively enriches OH <-> in an alkaline electrolyte to construct a local high-alkalinity microenvironment on the surface of the catalyst, Cl <-> in seawater is prevented from getting close to an active site corroding the catalyst through electrostatic repulsion, and the stability and durability of the catalyst are improved.

The invention discloses a gold nanoparticle loaded polycrystal face zinc oxide photocatalyst as well as a preparation method and application thereof, and relates to the technical field of catalyst preparation and photocatalysis. A hydrothermal method is combined with calcination treatment, and ZnO nanorods and ZnO nanosheets with different exposed crystal faces are prepared by controlling the use amount of a surfactant; and finally, loading the gold nanoparticles on ZnO through a photo-reduction method to construct the Au-ZnO material. According to the preparation method disclosed by the invention, high-efficiency and high-selectivity photocatalytic CH4 oxidative coupling preparation of C2H6 can be realized at normal temperature and normal pressure, the requirement of sustainable development energy strategy is met, and the preparation method has a wide application prospect. According to the method, the ZnO nanorods mainly exposed on the 0110 / 1010 crystal face and the ZnO nanosheets mainly exposed on the 0001 crystal face are synthesized, performance optimization is achieved through specific crystal face regulation and control, and the methane oxidative coupling efficiency is greatly improved.

The invention discloses an electromagnetic wave absorbing material CoFe2O4 / ZnO-RGO with a ternary heterostructure as well as a preparation method and application of the electromagnetic wave absorbing material CoFe2O4 / ZnO-RGO, and belongs to the technical field of electromagnetic wave absorption. According to the material, a novel heterostructure with a multi-scale interface and a three-dimensional conductive network is constructed by compounding magnetic loss type CoFe2O4, dielectric loss type ZnO nanorods and resistance loss type RGO. Wherein the ZnO nanorod not only serves as a dielectric loss body, but also effectively enhances the structural anisotropy and the interface polarization effect of the material, and cooperates with the magnetic loss of CoFe2O4 and the resistance loss of RGO to jointly optimize impedance matching and improve the electromagnetic attenuation capability, so that the material shows excellent wave-absorbing performance under various thickness and even ultrathin conditions. The material source is wide, the cost is low, the preparation process is green, simple and convenient, the material is suitable for large-scale production, and an effective material solution is provided for electromagnetic wave absorption application in the national defense and civil fields.

The invention relates to the technical field of biomedicine, in particular to hyaluronic acid hydrogel for simulating magnetic regulation and control of cell adhesion performance of tumor ECM (extracellular matrix). The hydrogel is prepared from the following components in percentage by weight: 0.5 to 10 percent of thiolated polysaccharide, 0.01 to 2.5 percent of 2-hydroxy-4 '-(2-hydroxyethoxy)-2-methyl propiophenone Irgacure2959, 0 to 100 [mu] g / mL of a superparamagnetic iron oxide nanorod SPIONR, 0 to 100 [mu] g / mL of a cell adhesion ligand and the balance of a solvent. According to the hyaluronic acid hydrogel capable of simulating the magnetic regulation and control of the cell adhesion performance of the tumor ECM, provided by the invention, the isotropic or anisotropic presentation of a cell adhesion ligand is regulated and controlled by magnetic arrangement through the magnetic nanorod coating soft hydrogel with a high aspect ratio; the hydrogel combines RGD modified superparamagnetic nanoparticles with a hyaluronic acid matrix, the arrangement of the nanoparticles is accurately regulated and controlled through an external magnetic field, and dynamic simulation of an ECM anisotropic topological structure is realized.

The invention discloses application of a piezoelectric-photocatalytic composite material in a spiral-flow type hydrogen production device, and belongs to the technical field of energy environments and materials. The preparation method comprises the following steps: growing a ZnO nanorod array on the surface of a designed porous material in situ through a hydrothermal method, and carrying out annealing treatment to obtain a composite structure with remarkable piezoelectric property; then the composite material is placed in a spiral-flow type hydrogen production device matched with the composite material, the piezoelectric effect of the piezoelectric-photocatalytic composite material can be improved under excitation of a high-speed rotating turbulent flow field, and meanwhile efficient gathering and separation of hydrogen are achieved through a central negative pressure area. Experimental verification shows that ZnO / NF particles show higher hydrogen evolution efficiency and stability under the action of dynamic shear force after the designed piezoelectric-photocatalytic composite material loaded ZnO particles are put into a cyclone. The test verifies that the piezoelectric-photocatalytic composite material prepared by the invention has the optimal hydrogen evolution rate at the rotating speed of 1000rpm.

The invention discloses a preparation method of a self-supporting composite sulfur positive electrode material and application of the self-supporting composite sulfur positive electrode material in a lithium-sulfur battery, relates to a preparation method and application of a self-supporting positive electrode material of the lithium-sulfur battery, and aims to solve the problems of poor catalytic activity and poor stability of the self-supporting positive electrode material of the existing lithium-sulfur battery. The method comprises the following steps: 1, preparing nanorod-shaped manganese-doped titanium dioxide; 2, loading the catalyst on a carbon source; and 3, loading an active substance to obtain the self-supporting composite sulfur positive electrode material. According to the method, a binder is not used, the mechanical property is good, a three-dimensional conductive network and a smooth ion migration channel are provided, the volume expansion before and after the positive electrode reaction can be effectively relieved through abundant macropores, and the nanorod-shaped TiO2-Mn has catalytic activity and can effectively catalyze the conversion from long-chain lithium polysulfide to short-chain lithium polysulfide, so that the preparation process is simple, and the preparation cost is low. And the loss of active substances in the charging and discharging process of the lithium-sulfur battery is reduced. And the specific discharge capacity under the high current density of 3C is 475.53 mAh / g, so that the lithium-sulfur battery can be used in the field of lithium-sulfur batteries.

The invention relates to an enzyme-mimic CeO2-based multi-active-site catalyst, a preparation method and application thereof, an electrolytic tank and a battery. CeO2 nanorods are synthesized through hydrothermal and high-temperature pyrolysis methods, and then metal ions are anchored to the surfaces of the CeO2 nanorods through strong interaction of carriers; metal nanoclusters and nanoparticles with specific sizes are synthesized, and then chemical vapor deposition reaction is performed through sodium hypophosphite, so that the bionic nano-enzyme electrocatalyst with multiple active sites is obtained. The multi-active-site catalytic material provided by the invention has high selectivity of ammonia production from nitrate radicals, ammonia production efficiency and Faraday efficiency when being used as a cathode. When the RuO2 is used as an anode, in an alkaline water electrolysis reaction, when the current density is 50 mA / cm < 2 >, the overpotential is 288 mV, which is far better than that of commercial RuO2. Based on excellent oxidation and reduction performance, the zinc nitrate battery has high power density, high ammonia yield and good charge-discharge cycle stability, and nitrate removal, ammonia production and power supply can be achieved at the same time.

The invention discloses a preparation method of a high-efficiency gas sensor for confinement isolated platinum atoms based on porous SnO2 nanorods, isolated Pt atoms are precisely deposited in SnO2 pore channels through an ALD technology, and the working temperature (190 DEG C) of the sensor is remarkably reduced by utilizing a confinement effect and a monatomic catalysis synergistic effect, so that the gas sensor has high sensitivity and high sensitivity. The sensitivity (Ra / Rg = 6.33 at5ppm) to acetone, the response speed (9 seconds) and the stability (the attenuation rate is 2.8% in 28 days) are improved. The sensor has wide application prospects in the fields of medical diagnosis, environmental monitoring and the like.

The invention discloses a spectrum polarization detection method based on a quasi-continuous domain bound state metasurface, and belongs to the application field of micro-nano optics and spectrum polarization detection. The implementation method comprises the following steps: adopting a symmetrical broken elliptical amorphous silicon nano-column arrangement mode to obtain a metasurface structure unit with a narrow-band formant, a high-quality factor and linear polarization dependence; the method comprises the following steps: analyzing a change rule of resonance wavelength along with geometric parameters of a structural unit and a change rule of resonance intensity along with a polarization state of incident light through numerical simulation to obtain a series of metasurface structures with different resonance wavelengths and different polarization responses, reasonably arranging the metasurface structures, processing a metasurface sample, and testing a reflection spectrum of the metasurface sample, and the spectrum and polarization response characteristics are calibrated. A spectrum polarization detection system composed of a detection target, a metasurface and a CMOS detector is built, and the spectrum and polarization information of the target is detected based on the spatial position arrangement of the metasurface structure and the Stokes relation by using gray information shot by the CMOS detector.

The application discloses a synthesis method of nitrogen-doped carbon-coated In2O3-CdSe hexagonal nanorod, and comprises the following steps: dissolving indium nitrate tetrahydrate and terephthalic acid in an organic solvent, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol, and drying the product to obtain a MIL-68-In precursor with a hexagonal nanorod structure; dispersing the MIL-68-In precursor in an organic solvent containing dissolved cadmium acetate, transferring the mixture into a reaction kettle after ultrasonic treatment for 10 minutes, heating the mixture for a period of time, centrifuging and collecting the product after the reaction is completed, cleaning the product with ethanol for several times, drying the product, and using the product for further use, and then calcining the synthesized sample and selenium powder in a tube furnace to obtain In2O3-CdSe@N-C. The application synthesizes the In2O3-CdSe@N-C hexagonal nanorod photocatalyst through a solvothermal and calcination method, and the synthesized photocatalyst has higher photocatalytic activity than the MIL-68-In.

The application discloses TiO2-Fe2O3 ordered hierarchical structure nanorod arrays, a preparation method and application thereof, and belongs to the field of materials and environmental protection technology. A rutile TiO2 film is mixed with a precursor I, a first-time hydrothermal growth reaction obtains TiO2 primary nanorod arrays, the TiO2 primary nanorod arrays are mixed with a precursor II, a second-time hydrothermal growth reaction is carried out, drying and annealing are carried out, and the TiO2-Fe2O3 ordered hierarchical structure nanorod arrays are obtained. The precursor I is a NaCl saturated aqueous solution of TiCl3. The precursor II is a NaNO3 saturated aqueous solution of FeCl3. The TiO2-Fe2O3 ordered hierarchical structure nanorod arrays have good research potential in the application promotion in the field of actual wastewater advanced treatment and practical application prospects under sunlight.

The application discloses a kind of iron oxide / nickel ferrite composite nanorods and synthesis method thereof, belong to nanometer material technical field.The obtained composite nanorod is polycrystalline structure, and is composed of rhombohedral Fe2O3 and cubic NiFe2O4 crystal phase.The diameter of the composite nanorod is 10-100nm, and the length is greater than 500nm.The synthesis method is that iron acetate and nickel acetate are dissolved in deionized water, heated to temperature 80-100 DEG C, and kept for 1-5h, and iron oxide / nickel ferrite precursor is obtained after cooling and drying;iron oxide / nickel ferrite precursor is mixed with calcium chloride and sodium chloride, then the mixture is loaded into corundum crucible, the crucible is placed in reaction furnace, at temperature 800-1000 DEG C, and kept for 5-10h.The synthesis process of the application is simple, does not need complex equipment, and is easy to control.Iron oxide / nickel ferrite composite nanorod has a large number of catalytic active sites, and is expected to have good interface performance, catalytic activity, electrical and magnetic properties, and has good application prospect in catalysts, electrical devices and magnetic devices.

This invention discloses an energy storage type TiO2 / CN X The photoanode of WO3 composite material and its preparation method include the following steps: preparing WO3 nanorods by hydrothermal method; adding WO3 nanorods and anionic surfactant to water, sonicating, adding pyrrole, stirring, and then adding an initiator solution dropwise under ice bath conditions, stirring, and obtaining WO3 / PPy composite after reaction; adding WO3 / PPy composite and anionic surfactant to an alcohol solution, sonicating and stirring, adding tetrabutyl titanate, glacial acetic acid and acetone, and then adding an aqueous alcohol solution dropwise, transferring to a hydrothermal reactor for reaction, obtaining precursor TiO2 / PPy / WO3 composite after hydrothermal reaction; loading the precursor TiO2 / PPy / WO3 composite onto a conductive substrate. TiO2 / CN X / WO3's excellent sustained photocathode protection performance can be attributed to the highly conductive CN X In synergy with WO3, a narrow-bandgap semiconductor with energy storage properties, TiO2 nanoparticles with stable photoelectrochemical properties serve as the main material, ensuring the stability of the photoelectric performance of ternary materials.

The invention provides a nitride epitaxial wafer, a preparation method of the nitride epitaxial wafer and a Micro-LED. The nitride epitaxial wafer comprises a heterogeneous substrate, a composite column structure, a nitride buffer layer, an n-type nitride layer, a light-emitting layer and a p-type nitride layer. The composite column structures are distributed on the surface of one side of the heterogeneous substrate at intervals, and each composite column structure comprises a plurality of composite Si nano columns and a composite nano layer wrapping the surfaces of the composite Si nano columns; the composite Si nano column comprises a first composite Si nano column and a second composite Si nano column; the height of the first composite Si nanorod is different from that of the second composite Si nanorod; the nitride buffer layer covers the composite column structure, and the surface of one side, far away from the substrate, of the nitride buffer layer is a horizontal plane; the light-emitting layer comprises at least one light-emitting unit, and each light-emitting unit comprises an In-containing quantum well layer and a nitride quantum barrier layer which are arranged in a stacked mode. According to the invention, the brightness, electric leakage and ESD antistatic release performance of the nitride epitaxial wafer can be improved.

The invention belongs to the technical field of electrode materials, and particularly relates to a MnCo2O4 / ZnCo2O4 nano composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: taking soluble manganese salt and soluble cobalt salt as raw materials, taking foamed nickel as a carrier, carrying out hydrothermal reaction in an alkaline environment to obtain MnCo-LDH / NF, then immersing the MnCo-LDH / NF in a precursor solution composed of the soluble cobalt salt, soluble zinc salt and 2-methylimidazole, carrying out coordination reaction to obtain MnCo-LDH ZIF-67 / ZIF-8, and finally carrying out heat treatment to obtain the MnCo2O4 / ZnCo2O4 nano composite material. In the MnCo2O4 / ZnCo2O4 nano composite material obtained by the method disclosed by the invention, MnCo2O4 with a nanorod structure and ZnCo2O4 with a dodecahedron structure form a heterojunction, so that the defect of poor conductivity of MnCo2O4 is overcome.

The application provides a one-dimensional iron oxide nanorod heterojunction composite material and a preparation method and application thereof, and belongs to the technical field of photoelectrocatalytic water splitting hydrogen production. The composite material provided by the application comprises: one-dimensional iron oxide nanorods, cuprous sulfide nanoparticles loaded on the one-dimensional iron oxide nanorods, and cobalt hydroxide nanosheets coated on the surfaces of the one-dimensional iron oxide nanorods and the cuprous sulfide nanoparticles. On one hand, the Fe2O3 / Cu2S p-n heterojunction is introduced to accelerate the separation of photo-generated carriers in the Fe2O3 nanorod array, and on the other hand, the Co(OH) x The surface OECs accelerate the kinetics process of interfacial water oxidation, the rapid depletion of photo-generated holes further improves the charge separation of the photoanode surface, and the synergistic effect between the Fe2O3 / Cu2S p-n heterojunction and the OECs significantly improves the PEC water splitting performance of the iron oxide nanorod array composite material.

The invention discloses a preparation method of graphene super-energy zinc oxide, and relates to the technical field of inorganic synthesis and nano material preparation. Comprising the steps of hydrothermal synthesis in a polar solvent system, wet precipitation, ultrasonic treatment and high-temperature roasting and ball milling. A comb-shaped functional additive is matched with an auxiliary agent to regulate and control a solvent environment, and ZnO with controllable morphology such as hexagonal prism / nanorod / nanowire is generated under a hydrothermal condition. And mixing the graphene with calcium carbonate and graphene to obtain the graphene super-energy zinc oxide. The rubber composition has excellent processability in the processing process, can effectively improve the production efficiency and ensure the stability of the product quality, and is suitable for producing and processing various rubber products, such as tires, rubber tubes, adhesive tapes, rubber shoes and the like.

The invention discloses a titanium dioxide nanorod / dissimilar metal MOFs heterojunction material and a preparation method and application thereof, and belongs to the technical field of photoelectrochemistry seawater hydrogen production. Soluble nickel salt, soluble cadmium salt or soluble cobalt salt and ammonium molybdate are adopted as metal sources, spherical dissimilar metal MOFs grow on the surface of a TiO2 nanorod in situ, and the TiO2 nanorod / dissimilar metal MOFs heterojunction material is prepared. According to the present invention, the oxygen deficiency-regulated dissimilar metal MOFs material (i.e., the titanium dioxide nanorod / dissimilar metal MOFs heterojunction material) is obtained through subsequent acid etching and annealing treatment, the material is subjected to in-situ reconstruction during the OER process to spontaneously form the active hydroxide (NiOOH) of anion protection (MoO4 < 2->), and the excellent stability is represented; only small Faraday efficiency loss (1.2-2.3%) occurs in a high chloride ion environment (3.5 wt%-7wt% of NaCl), and an extensible path is provided for industrial-scale solar hydrogen production by using seawater.

The application discloses an IMU light path structure based on multiple super surfaces, and the light beam generated by a laser 1 is divided into three mutually perpendicular light beams after the action of a beam splitting super surface 3, and then is converted into circularly polarized light and linearly polarized light by a polarization conversion beam splitting super surface 4, and is used for pumping and detection of a nuclear magnetic resonance gyroscope 5 respectively. The beam splitting super surface 3 is composed of polarization-insensitive cylindrical nanorods, and the incident light is split and corresponding deflection is generated by combining the generalized Snell law. The polarization conversion beam splitting super surface 4 is composed of polarization-sensitive rectangular nanorods and polarization-insensitive cylindrical nanorods, the rectangular nanorods are used for converting linearly polarized light into circularly polarized light, and the cylindrical nanorods maintain the linear polarization characteristics and realize light beam splitting and direction adjustment. The application adopts a single laser configuration, realizes efficient light field regulation and control based on super surfaces, avoids the problem that a traditional IMU light path system depends on multiple lasers, reduces the system volume, complexity and energy consumption, improves the stability and integration, and is suitable for high-precision inertial navigation applications.

The disclosure relates to the technical field of functional nanomaterials, in particular to a fluorescent metal-organic framework superstructure compound, a preparation method and application thereof. The present disclosure provides a method for preparing a fluorescent metal-organic framework superstructure compound, comprising the steps of: providing a microfluidic mixing device; injecting a soluble rare earth salt solution from the first feeding pipe 1; injecting an oil phase solution from the second feeding pipe 2; forming droplets of the rare earth salt solution in the mixing channel 4; then subjecting the droplets to a coordination reaction with an organic ligand solution to obtain the fluorescent metal-organic framework superstructure compound. The preparation method provided by the present disclosure can prepare the fluorescent metal-organic framework superstructure compound in the form of a sphere which is self-assembled from MOFs nanorods, and the particle size distribution of the sphere is uniform.

The invention discloses a preparation method of a high-flux anti-pollution nanofiltration membrane based on nanorods. The preparation method comprises the following steps: treating cerium nitrate hexahydrate and sepiolite nanoparticles to obtain nanorods, dispersing the nanorods in a water-phase monomer solution to obtain a nanorod / water-phase dispersion liquid, activating a microporous membrane to obtain an active base membrane, immersing the active base membrane in the nanorod / water-phase dispersion liquid to obtain a water-phase impregnated membrane, and drying the water-phase impregnated membrane to obtain the water-phase impregnated membrane. And immersing the water-phase impregnated membrane in an organic solvent solution of acyl chloride monomers, airing in the air to obtain an intermediate membrane, washing the intermediate membrane with deionized water, and staying in a drying oven to obtain the high-flux anti-pollution nanofiltration membrane. The product has high water flux recovery rate FRR to bovine serum albumin (BSA) and high flux to magnesium sulfate, has good anti-pollution performance and high flux, and solves the technical bottleneck that anti-pollution modification of an existing nanofiltration membrane brings negative effects on permeability.

The invention relates to a system for amplifying nucleic acids, in particular by means of a polymerase chain reaction, comprising a fluid receptacle (1), in particular a microtiter plate or a microchip, and a reaction mixture (2), which contains at least one nucleic acid (2.1) to be amplified, a polymerase enzyme, a buffer medium (2.2), a plurality of excitable nanoparticles (3), preferably nanostars or nanorods, and quantification means, in particular a fluorescent and / or intercalating nucleic acid dye, the reaction mixture (2) being receivable in the fluid receptacle (1). The system further comprises a reaction chamber (4), which has excitation means, the fluid receptacle (1) preferably being introducible into the reaction chamber (4) and the excitation means (5) being designed to excite the nanoparticles (3); the nanoparticles (3) are designed to generate heat in the excited state; and the reaction chamber (4) has a detection device (6), which is designed to excite the quantification means and quantitatively and / or qualitatively detect same, said excitation means being near-infrared radiation emitters (5).

The present application relates to the technical field of thin film photocatalyst preparation, in particular to a kind of heterojunction thin film photocatalyst and its preparation method and application, the present application is constructed by purple phosphorus nanosheet (VPNS) and ZnO nanorod array on flexible substrate ITO-PEN A kind of VPNS / ZnO nanorod array heterojunction thin film photocatalyst, and it shows excellent catalytic performance in photocatalytic degradation organic pollutants and carries out sewage treatment, can realize the demand of photocatalysis and carries out sewage treatment.The VPNS / ZnO heterojunction thin film photocatalyst provided in the present application on flexible substrate ITO-PEN has the advantages of simple preparation method, high efficiency and good stability, high degradation efficiency, easy recovery and the like.

This invention provides a self-supporting one-dimensional nanorod array composite material, its preparation method, and its application, belonging to the field of clean energy harvesting technology. The preparation method provided by this invention includes the following steps: mixing soluble nickel salt, soluble molybdate, and water, and carrying out a hydrothermal reaction to obtain a NiMo precursor; heat-treating the NiMo precursor and a modifier under a protective atmosphere to obtain the self-supporting one-dimensional nanorod array composite material. Experimental results show that the composite material prepared by the method provided by this invention has excellent electrocatalytic water splitting activity and operational stability, and photo-assisted synthesis further enhances the electrocatalytic water splitting activity of the composite material, making it applicable to solar-driven electrocatalytic water splitting.

The application discloses a kind of implant and its preparation method and application, the implant includes material body, metal oxide layer and mixed crystal layer, the mixed crystal layer is located the surface of the metal oxide layer;The metal oxide layer includes metal oxide nanorod array;The metal oxide is selected from zinc oxide, silver oxide or its combination;The mixed crystal layer includes CaP crystal and metal oxide crystal.The implant of the application is sterilized by the bacteriostatic metal ion generated by physical puncture and degradation of metal oxide nanorod, has good antibacterial effect to gram-positive bacteria and gram-negative bacteria, prevents infection;It can also relieve post-implantation inflammatory response, reduce immune response under post-implantation infection, shorten wound healing time.In addition, due to the coating effect of mixed crystal layer on metal oxide layer, the bacteriostatic metal ion is slowly released, the release time is long, and long-lasting antibacterial effect can be achieved, and post-implantation inflammatory response can be reduced.

The invention belongs to the technical field of zinc ion batteries, and particularly relates to a zinc metal negative electrode and a zinc ion battery. The zinc metal negative electrode comprises a zinc metal substrate and a coating covering the surface of the zinc metal substrate, the coating comprises a conductive metal oxide; the coating is formed on the zinc metal substrate in a manner independent of an organic polymer binder. According to the scheme, the use of an insulating organic polymer adhesive is avoided, so that the conductivity of the coating is improved, and the structural controllability of the coating is improved. The high-conductivity indium tin oxide (ITO) nanorod is prepared through cooperation of microwave solvothermal synthesis and high-temperature calcination, and a protective layer which is free of a binder and controllable in structure is constructed on the surface of the zinc foil through the electrophoretic deposition technology.