105 results about "Zno nanoparticles" patented technology

The present invention generally relates to a method for synthesizing NiO / ZnO nanoparticles using solution combustion synthesis. The method comprising: dissolving 10 grams of Zinc nitrate hexahydrate (Zn(NO3)2·6H2O) and 10 grams of Nickel(II) nitrate hexahydrate (Ni(NO3)2·6H2O) in 30 ml of double-distilled water to obtain a solution; adding at least one fuel selected from a group consisting of glucose, urea, and combinations thereof to the solution; stirring the solution for one hour to achieve homogeneity and transferring the homogeneous solution into a Pyrex dish; placing the dish inside a preheated muffle furnace at a temperature range of 440° C. to 460° C. and allowing the solution to boil, froth, and undergo exothermic combustion thereby retrieving the resulting fine nanoparticle powder upon completion of the reaction within 20 minutes; and cooling the synthesized powder to room temperature and grinding the powder to achieve a fine, uniform consistency, thereby forming NiO / ZnO nanoparticles.

The invention relates to the technical field of polypropylene, in particular to an antibacterial modified polypropylene material and a preparation method thereof. The problems of poor antibacterial property and mechanical property of the polypropylene material are solved. According to the invention, the carbon nanotube is used as a carrier, ZnO nanoparticles are grafted on the surface, and the carbon nanotube and the polypropylene resin are subjected to interface synergy and functional complementation, so that the mechanical property and antibacterial activity of the material are synchronously improved; through the short-range-long-range synergistic effect of the short carbon fibers and the glass fibers treated by the silane coupling agent KH550, the fracture resistance of the material is remarkably improved; through the molecular-level synergistic effect of hydroxylated boron nitride nanosheets and maleic anhydride grafted polypropylene, the interfacial compatibility of the nanofiller and a polypropylene matrix is optimized, and the mechanical property of the material is improved; the antibacterial microcapsule is prepared by taking chitosan as a carrier, wrapping hinokitiol and loading nano titanium dioxide, and the material is endowed with long-acting antibacterial performance.

The invention discloses a flexible pressure sensor based on a metal oxide thin film transistor and a preparation method and application thereof. The flexible pressure sensor based on the metal oxide thin film transistor comprises a flexible substrate, a gate electrode layer, a gate dielectric layer, a metal oxide channel layer, a source electrode, a drain electrode and a piezoelectric layer, the piezoelectric layer comprises a piezoelectric polymer, ZnO nanoparticles and MXene nanosheets, and the surface of the piezoelectric layer is provided with a convex micro-nano structure. The flexible pressure sensor based on the metal oxide thin film transistor has the advantages of excellent electrical properties, good flexibility, high sensitivity, easy integration, simple preparation process and low cost, is suitable for the production of large-scale sensor arrays, and has very wide application prospects in the fields of flexible touch screens, human-computer interaction, electronic skin and the like.

The invention relates to a preparation method and application of a black high-transmittance resin composite board, and belongs to the technical field of advertising materials. The resin is formed by compounding a black light-transmitting layer, a light guide layer and a diffusion layer, wherein the high-transmittance layer is prepared by modifying a carboxylated carbon nanotube with a silane coupling agent, polymerizing with a methyl methacrylate monomer, and directionally arranging in a magnetic field, so that high light transmittance and pure black appearance are realized; the light guide layer takes polycarbonate as a matrix, SiO2 microspheres are added, and the light transverse propagation efficiency is improved through hot press molding; the diffusion layer takes polymethyl methacrylate as a matrix, ZnO nanoparticles are added, a periodic microprism structure is processed on the surface, and uniform diffusion of light is realized. When applied to a lamp box, the light source is turned off to present a pure black appearance, and when turned on, the light source has high light transmittance and no mixed color, and is suitable for high-end advertisement display screens, vehicle-mounted lamp boxes and other scenes.

The invention discloses biodegradable coated paper and a preparation method thereof, and relates to the technical field of polymer materials. The coated paper comprises a polylactic acid compound, wherein the polylactic acid compound comprises the following components in percentage by weight: 2-40% of long-chain branched polylactic acid containing ZnO nanoparticles and 60-98% of polylactic resin. According to the biodegradable coated paper and the preparation method thereof provided by the invention, through introduction of ZnO nanoparticles, physical crosslinking points and nucleating points in a polylactic acid compound system are increased, and the mechanical property, crystallization property, hot water resistance and oil resistance of PLA can be remarkably improved, so that the prepared coated paper has good antibacterial property and excellent comprehensive performance.

The invention relates to the technical field of radiation refrigeration films, and discloses a porous polyvinylidene fluoride based composite radiation refrigeration film and a preparation method thereof. The method comprises the following steps: firstly, carrying out melt blending on PVDF, NaCl and ZnO nanoparticles and forming a film, then dissolving out NaCl through water washing, and constructing a continuous three-dimensional porous structure in a PVDF matrix; and immersing the obtained porous PVDF / ZnO membrane material into a methanol aqueous solution containing 2-methylimidazole, so that ZnO is subjected to a coordination reaction at the pore wall and is converted into the ZIF-8 nanocrystal in situ. In the thin film prepared by the steps, the micron-sized salt-induced pore structure, the nano-sized ZIF-8 particles and the interface of the ZIF-8 particles jointly form a multi-stage scattering network, so that the scattering ability of the thin film in the solar spectrum range of 0.25-2.5 microns can be remarkably enhanced, the high infrared emission performance of the PVDF matrix in an atmospheric window of 8-13 microns is maintained, and the thin film has high solar reflectivity and high infrared emissivity, and can be used for preparing the solar film. An excellent radiation refrigeration effect can be achieved, and the heat-dissipating material is suitable for being applied to building outer surfaces, equipment heat dissipation, individual heat management and the like.

The invention discloses a super-hydrophobic coating based on a fluffy ZnO rod-PDMS, belonging to the technical field of super-hydrophobic coatings. A ZnO / polydimethylsiloxane (PDMS) layer is prepared by strictly controlling the ratio of ZnO and PDMS, a prepolymer A solution is added to a n-hexane solution and fully stirred, nano zinc oxide is added and fully stirred to make it uniformly mixed, a curing agent B solution is added and fully stirred, the mixed PDMS / ZnO nanoparticle solution is spin-coated on a glass slide, and the PDMS / ZnO nanoparticle substrate is prepared by curing; on this basis, staggered zinc oxide rods are prepared on the surface of a substrate by a hydrothermal method, and a fluffy microscopic surface coating is formed, after being modified by a FAS-17 solution, the super-hydrophobic coating has excellent self-cleaning performance, high acid and alkali corrosion resistance, and super-hydrophobic performance to various common liquids, and solves the problems of complicated preparation process, high material cost and poor long-term durability.

Preparation method and application of bismuth sulfide / zinc oxide heterojunction material, which solves the problem that the gas sensor prepared from Bi2S3-based heterostructure can only detect H2S gas under dark conditions, while there are still problems of low response value and poor selectivity under visible light conditions. Method: Synthesize Bi2S3 nanowires, and mechanically mix them with ZnO nanoparticles to form a Bi2S3 / ZnO heterostructure. Regulate the quantity of zinc oxide, change the electronic structure of bismuth sulfide, improve the surface adsorption active sites, and then improve the response value and selectivity for detecting H2S under room temperature visible light, and shorten the response time. After the surface of Bi2S3 nanowires is modified with ZnO in the present invention, it has a response value of 16.0 times for 500 ppb of H2S under room temperature visible light, the response time is only 51.6 s, and it has good selectivity, low cost and simple process, and is suitable for industrial production. It is used for rapid detection of H2S under room temperature and visible light conditions.

The application discloses a preparation method of high-efficiency aldehyde-removing liquid, and a product and application thereof. By adopting microcapsule-coated nano zinc oxide particles with photocatalytic activity, the function of removing formaldehyde is exerted, and meanwhile, due to the isolation of the microcapsule wall material, damage of the photocatalytic oxidation reaction to the base organic material is avoided. The microcapsule in the high-efficiency aldehyde-removing liquid has a suitable size, is not easy to penetrate into the inside of porous materials such as fabrics and wood, is easy to wipe clean, and cannot cause white spot residue to affect the appearance. The application is suitable for different material furniture surfaces without leaving white spots, and is harmless to organic material furniture.

The application discloses a preparation method of modified zinc oxide nanotube catalytic material and belongs to the technical field of photocatalytic materials. Deionized water, alcohol, an organic solvent, a basic solid and a zinc salt are used to prepare a one-dimensional zinc-based organic framework structure, then a colloidal solution with photocatalytic properties is mixed with the one-dimensional zinc-based organic framework structure to obtain a modified one-dimensional zinc-based organic framework structure composite material, and finally, the modified one-dimensional zinc-based organic framework structure composite material is calcined in an oxygen-inert gas mixed atmosphere to obtain a tubular catalytic material composed of modified zinc oxide nanoparticles. The one-dimensional zinc-based organic framework structure is constructed, and a calcination method is used to synthesize a tubular catalytic material composed of zinc oxide and narrow-band-gap semiconductor modified zinc oxide nanoparticles. The synthesis method is simple in operation, low in cost and small in waste generation, and can solve the problems of easy agglomeration of nanoparticle catalysts and low catalytic efficiency, so that a tubular photocatalytic material composed of ZnO nanoparticles with high photocatalytic activity is obtained.

The invention provides biomass carbon as well as a preparation method and application thereof in piezoelectric electro-catalytic degradation of methylene blue. The invention also provides a method. Coffee grounds are used as a biomass charcoal precursor, efficient recycling of organic waste is achieved, the raw material cost is reduced, and the method conforms to the circular economy concept. The ZnO coating with controllable atomic-scale thickness and uniform distribution is realized, and the agglomeration problem of a traditional method (such as an impregnation method) is solved. ALD can be carried out at low temperature, so that the pore structure of the biomass charcoal is prevented from being damaged by high temperature, and the activity of zinc oxide is kept. Through ALD precursor selection (such as diethyl zinc and water vapor) and cycle index optimization, chemical bonding of ZnO and biomass charcoal is enhanced, and the stability of the composite material is improved. The natural porosity (micropore-mesopore) of the coffee residue biomass charcoal is combined with ZnO nanoparticles deposited by ALD, so that a high specific surface area and active sites are provided.

This invention discloses a near-infrared light-responsive porous membrane, its preparation method, and its applications, relating to the field of dressing technology. The near-infrared light-responsive porous membrane is composed of polyurethane, PDA@ZnO nanoparticles, and the antibacterial agent QCS. Under near-infrared light excitation, this near-infrared light-responsive porous membrane can generate reactive oxygen free radicals and heat, and release biofunctional zinc ions. Addressing the clinical challenges of chronic wounds, such as their susceptibility to infection and slow healing, this invention provides a new approach to improving the clinical treatment of chronic wounds by using a PDA@ZnO / QCS / TPU porous membrane that achieves highly efficient and precise sterilization under the synergistic effect of specific wavelengths of light, thereby preventing wound infection and promoting wound healing.

A method for improving the germination of *Carex lumbricoides* seeds based on nano-zinc oxide initiation belongs to the field of wetland ecological engineering technology. The invention includes the following steps: First, nano-zinc oxide particles with a particle size of 30±10 nm are dispersed in deionized water by ultrasonic oscillation to prepare a suspension of 12.5-200 mg / L; second, collected *Carex lumbricoides* seeds are float-screened, and plump seeds that sink to the bottom are selected and subjected to surface sterilization; subsequently, the sterilized seeds are immersed in the nano-zinc oxide suspension and initiated by agitation under light-proof conditions for 6 or 24 hours, followed by air drying to restore the initial moisture content; finally, the initiated seeds are placed in an artificial climate incubator for germination culture under specific variable temperature and light conditions. This invention utilizes the biocompatibility of nano-zinc oxide and effectively solves the problems of long germination cycles and low germination rates of *Carex lumbricoides* seeds by precisely controlling the initiation concentration and time. This invention has the advantages of simple operation, low cost, and environmental friendliness, and can significantly improve the germination rate and germination percentage, providing high-quality seedlings for the restoration of degraded wetland vegetation.

The present application relates to a kind of composite piezoelectric negative pressure dressings and its preparation method, belong to medical dressing field.The present application includes: step S1: collagen is dissolved in acetic acid to obtain collagen solution, collagen sponge is obtained by freeze-drying process;Step S2: PVDF powder and ZnO nanoparticles are dissolved in organic solvent to obtain PVDF / ZnO solution;Step S3: the injector equipped with PVDF / ZnO solution is placed in electrospinning machine, collagen sponge is fixed on the collection wheel of electrospinning machine, and PVDF / ZnO nanofiber is covered on collagen sponge to form composite piezoelectric dressing by electrospinning method;Step S4: semipermeable membrane is covered on the top layer of composite piezoelectric dressing, while connecting drainage tube, forming negative pressure system, to obtain composite piezoelectric negative pressure dressing.The present application has good biocompatibility.Nanofiber membrane is more sensitive, and controllable negative pressure intensity makes it have excellent stability, and piezoelectric performance is more excellent.

A system for the synthesis of zinc oxide nanoparticles (ZnO-NPs) comprising the steps of preparing an aqueous extract from Annona muricata leaves, adding the extract to an aqueous solution of zinc acetate dihydrate, adjusting the pH to approximately 8 with sodium hydroxide, stirring and heating the mixture at approximately 70 °C, and collecting and drying the resulting ZnO nanoparticles.

The invention discloses high-strength anti-aging styrene-butadiene rubber and a preparation method thereof, and belongs to the field of synthetic rubber modification. Porous reticular ZnO aggregated by 6.5 nm ZnO nanoparticles is synthesized by a hydrothermal method by using a composite surfactant of PVP K30 and polyvinyl alcohol 600 in a ratio of 1: 1, and the ZnO is not dried after synthesis so as to avoid aggregation; the preparation method comprises the following steps: carrying out surface modification with a silane coupling agent KH560, carrying out segmented temperature control mixing with styrene-butadiene rubber, carbon black N330 and other assistants, and carrying out pre-crosslinking and gradient heating vulcanization to obtain a finished product. A porous net structure allows rubber slurry to fully permeate, the contact area of the filler and a matrix is increased, and efficient reinforcement is realized by low mixing amount; znO nano-particles can convert ultraviolet light into visible light, and the aging resistance is enhanced by matching with the scattering effect of a porous structure; the coupling agent modifies and optimizes the interfacial compatibility, the problem that agglomeration and performance of a traditional filler are difficult to consider is solved, and the finished product has high strength and excellent aging resistance and meets the requirements of tires, sealing elements and other scenes.

The application provides an anti-aging overhead insulated cable, and belongs to the technical field of cables, comprising a conductor, an insulation layer and an outer sheath; wherein the insulation layer is composed of a three-layer structure, and the inner shielding layer, the main insulation layer and the outer protective layer are sequentially arranged from inside to outside; the inner shielding layer is prepared from carbon black modified cross-linked polyethylene, and the thickness is 0.5-1.2 mm; the main insulation layer is a nano zinc oxide-silicon rubber composite material, 5-8 wt% of nano zinc oxide particles are dispersed in the silicon rubber, and the thickness of the main insulation layer is 2-3.5 mm; the outer protective layer is prepared from polyolefin modified by an ultraviolet absorber. The anti-aging overhead insulated cable has the advantages that through the optimization of multi-layer materials and the structural design, the cable has the advantages of anti-aging, weather resistance, high mechanical strength and stable electrical performance.

The present application provides the use of a nanocomposite with a core-shell structure. Specifically, the present application provides the use of a nanocomposite with a core-shell structure in the preparation of a drug for preventing and / or treating Clostridium difficile infection and recurrent diseases caused thereby, wherein the nanocomposite comprises: ZnO nanoparticles as a core; mesoporous silica as a shell coated on the surface of the ZnO nanoparticles; an antibiotic loaded in the pore channel of the mesoporous silica; hyperbranched polylysine modified on the surface of the mesoporous silica; and a pH-responsive coating material as the outermost layer. The nanocomposite provided by the present application can achieve precise targeted release of the drug in the colon, and through the sequential and synergistic mechanism of "membrane breaking-sterilization-spore inhibition-repair", it can simultaneously solve multiple factors leading to CDI recurrence such as biofilm protection, spore storage, bacterial population destruction, mucosal damage, etc., and improve the treatment effect.

The invention discloses a weather-resistant and ultraviolet-resistant home textile fabric and a processing device, a fabric base material is composed of one or more of polyester fibers, cotton fibers or polyester-cotton blend fibers, and an ultraviolet-resistant auxiliary agent comprises nano zinc oxide particles, an ultraviolet light absorber benzotriazole compound and a waterborne polyurethane adhesive. Through the synergistic effect of the nano zinc oxide and the benzotriazole compound and in combination with a cross-linked network of the waterborne polyurethane adhesive, the assistant and the fiber form a chemical bonding and physical anchoring dual-combination mechanism, and the polyester-cotton blended base material balances the strength of chemical fibers and the hygroscopicity of natural fibers, so that the mechanical property of the fiber is improved, and the mechanical property of the fiber is improved. Due to the addition of the far infrared ceramic powder, the temperature control performance of the fabric is further improved, the fabric is endowed with the characteristics of being warm in winter and cool in summer, the hand feeling is soft, the chemical fiber feeling is remarkably reduced, the hot drying connecting plate and the rolling connecting plate are linked through the movable column and the butt joint plate, and the problem of local overheating or uneven drying is solved.

The application discloses a kind of high-dispersed zinc oxide nanocomposite polyester chips and preparation method thereof.The application is aimed at improving the dispersing ability and compatibility of ZnO nanoparticles in polyester matrix by suitable and effective surface modification, achieving good dispersion of antibacterial components in polyester matrix during in-situ coating process, and maintaining good spinning and antibacterial performance.ZnO nanoparticles after surface modification are dispersed again in D 90 The modified polyester chips have a size of 100-500 nm and an intrinsic viscosity of about 0.6-1.5 dL / g.The ZnO nanocomposite polyester chips can be used for the preparation of polyester fibers, which have improved antibacterial performance while maintaining good mechanical properties and color phase, ultimately improving product quality and reducing cost.In addition, the prepared polyester fibers have excellent antibacterial effect on escherichia coli and staphylococcus aureus.

The application belongs to the technical field of semiconductor gas sensitive material and sensor, and particularly relates to a selective gas sensitive material for a complex gas environment and a preparation method and application thereof. The gas sensitive material takes WO3 nanofiber as a substrate, composites ZnO nanoparticles on the surface of the substrate, and loads noble metal Ir to form an Ir-ZnO / WO3 ternary composite structure. The composite structure is obtained by adding WO3 nanofiber prepared by an electrospinning method, ZIF-8 precursor and Ir nanoparticles into an anhydrous ethanol solution, and then performing ultrasonic treatment and drying, and finally calcining under an air atmosphere. The material and the sensor exhibit high sensitivity and high selectivity to BTXs, and have good anti-interference ability and stability, and are suitable for real-time monitoring and early warning of BTXs leakage in a complex industrial site with multiple gas interference such as petrochemical industry and waste treatment.

The invention relates to the technical field of analysis and detection, in particular to an electrochemical gas sensor for detecting ocimene and a preparation method of the electrochemical gas sensor. The preparation method comprises the following steps: dispersing multi-walled carbon nanotubes in a ZnO nanoparticle solution, and then coating the surface of an electrode with the ZnO nanoparticle solution to prepare a composite material modified electrode; then ocimene template molecules and acrylamide functional monomers are dispersed in an alcohol solvent, polymerization reaction is performed under the action of a cross-linking agent and an initiator, and a molecularly imprinted polymer solution is prepared; and finally, coating the surface of the electrode modified by the composite material with a molecularly imprinted polymer solution, and eluting template molecules to obtain the electrochemical gas sensor. The sensor can sensitively and accurately detect the content of ocimene gas released in plants, and realizes high-specificity and high-sensitivity stable and accurate detection of ocimene in a complex environment. The invention provides important theoretical basis and technical support for cultivating high-quality crops, and assists the innovative development of the field of crop breeding.

This invention provides a nanocomposite material with a core-shell structure. The nanocomposite material comprises: ZnO nanoparticles as the core; mesoporous silica as the shell coating the surface of the ZnO nanoparticles; an antibiotic loaded within the pores of the mesoporous silica; hyperbranched polylysine modified on the surface of the mesoporous silica; and a pH-responsive coating material as the outermost layer. The nanocomposite material provided by this invention enables precise targeted drug release in the colon, simultaneously addressing multiple factors leading to CDI recurrence, such as biofilm protection, spore storage, microbial disruption, and mucosal damage, through a sequential synergistic mechanism of "membrane disruption-bactericidal-spore inhibition-repair," thereby improving treatment efficacy.

This invention relates to a method for preparing a black high-transparency resin composite board and its application, belonging to the field of advertising materials technology. The resin of this invention is composed of a black transparent layer, a light-guiding layer, and a diffusion layer. The high-transparency layer uses carboxylated carbon nanotubes modified with a silane coupling agent, polymerized with methyl methacrylate monomers, and magnetically oriented to achieve high light transmittance and a pure black appearance. The light-guiding layer uses polycarbonate as a matrix, adding SiO2 microspheres, and improves the lateral light propagation efficiency through hot pressing. The diffusion layer uses polymethyl methacrylate as a matrix, adding ZnO nanoparticles, and processing a periodic microprism structure on the surface to achieve uniform light diffusion. When applied to light boxes, it presents a pure black appearance when the light source is off, and exhibits high light transmittance without any impurities when on, making it suitable for high-end advertising displays, vehicle-mounted light boxes, and other scenarios.

The present application provides an anti-odor coating, a method for manufacturing the anti-odor coating, and a cup. The anti-odor coating comprises a non-stick layer and nano zinc oxide particles filled in the non-stick layer. The cup with the anti-odor coating according to the embodiments of the present application can ensure that foreign matters (e.g. particulate matters, liquid droplets) are not easily adhered to the anti-odor coating after use, thereby reducing the source of odor from the root. The nano-sized zinc oxide can catalyze the system composed of water and air under the condition of photoexcitation to produce active oxygen groups, which can catalyze / degrade various organic molecules to decompose into inorganic substances such as carbon dioxide and water molecules, so that the anti-odor coating with nano zinc oxide particles can reduce or basically solve the odor problem of the cup after use.

The invention discloses functional nano zinc oxide as well as a preparation method and application thereof, and belongs to the technical field of food packaging materials and functional nano composite materials. The preparation method comprises the following steps: dissolving dialdehyde cellulose in a hydrochloric acid solution, mixing with a procyanidine solution dissolved in DMSO (Dimethylsulfoxide), heating to react, dialyzing and drying to obtain a cellulose-polyphenol graft; and uniformly mixing the cellulose-polyphenol graft aqueous solution with a zinc nitrate aqueous solution, adjusting the pH value, carrying out a hydrothermal reaction, carrying out centrifugal separation, washing the precipitate, and drying to obtain the functional zinc oxide nanoparticles. Through an aldehyde cellulose-polyphenol grafting strategy, the particle size controllability and dispersity of ZnO nano particles are improved, the ZnO nano particles are endowed with higher specific surface area and functionality, and after the ZnO nano particles are loaded to a chitosan film, the oxidation resistance, antibacterial property and mechanical strength of the film are remarkably enhanced.

The application discloses a preparation method and application of a GO-rGO / ZnO / GelMA bio-ink material. The rGO reduced by a physical method of ultraviolet irradiation is compounded with GelMA hydrogel, and ZnO nanoparticles are introduced at the same time. The rGO and the ZnO nanoparticles synergistically act, on the one hand, improve the printing performance of the GelMA hydrogel, and on the other hand, reduce the swelling rate and degradation rate of the GelMA hydrogel support, and improve the compression modulus, biological activity, osteogenic property and antibacterial performance of the GelMA hydrogel support. Therefore, the GO-rGO / ZnO / GelMA composite bio-ink material prepared by the application has the printing performance, biological activity, osteogenic property and antibacterial property, can realize integrated and synergistic repair of osteogenesis and anti-infection, and can be widely applied to the preparation of bone repair materials. Meanwhile, the ZnO-rGO composite system can be applied to interior wall coating as an effective antibacterial agent.

The present invention relates to the technical field of galvanized steel pipes, and discloses a corrosion-resistant galvanized steel pipe and a preparation process thereof; in the present invention, an amino-modified carbon dot inhibitor is synthesized by a hydrothermal method, and then dopamine monomers are covalently bonded to its surface through a coupling reaction to prepare a functionalized carbon dot inhibitor. Finally, it is used as an intercalating agent to modify and exfoliate boron nitride to prepare intercalation-modified boron nitride nanosheets; dopamine is used to modify nano-zinc oxide particles, and the Π-Π stacking effect between the catechol groups on polydopamine and the aromatic rings on the inhibitor is utilized, and then a large number of active functional groups on polydopamine are used to graft KH590 on its surface to prepare modified zinc oxide nanoparticles. Finally, it is loaded on the intercalation-modified boron nitride nanosheets through a dehydration condensation reaction to prepare composite boron nitride nanosheets. It is used as the main component of the passivator to form a passivation film on the galvanized steel pipe, and finally a corrosion-resistant galvanized steel pipe is prepared.

The invention belongs to the technical field of semiconductor technologies, and discloses a blood glucose detection device based on a non-toxic colloidal quantum dot photodiode, which comprises a near-infrared light source module, a photoelectric conversion module, a signal processing module and a blood glucose calculation module, the photoelectric conversion module is a non-toxic colloidal quantum dot photodiode; the non-toxic colloid quantum dot photodiode comprises a bottom reflection electrode, a DBR layer, an N-type layer, an absorption layer, a P-type layer and a top transparent electrode which are sequentially stacked. The N-type layer is a TiO2 or ZnO nano particle layer; the absorption layer is an intrinsic AgBiS2 and ZnTe mixed colloid quantum dot layer; the P-type layer is a CuInS2 colloidal quantum dot layer; the top transparent electrode is made of ITO or AZO. The long-term safety of the device can be remarkably improved, and the device is more suitable for non-invasive wearable blood glucose monitoring application which is in contact with or is attached to the skin of the human body.

The invention discloses a preparation method of a modified zinc oxide nanotube catalytic material, and belongs to the technical field of photocatalytic materials. The preparation method comprises the following steps: preparing a one-dimensional zinc-based organic frame structure from deionized water, alcohol, an organic solvent, an alkaline solid and zinc salt, then mixing a colloidal solution with photocatalytic characteristics with the one-dimensional zinc-based organic frame structure to obtain a modified one-dimensional zinc-based organic frame structure composite material, and finally calcining in an oxygen-inert gas mixed atmosphere to obtain the composite material with the one-dimensional zinc-based organic frame structure. The tubular catalytic material composed of the modified zinc oxide nanoparticles is obtained. According to the invention, a one-dimensional zinc-based organic framework structure is constructed, and the tubular catalytic material composed of zinc oxide and narrow-band gap semiconductor modified zinc oxide nanoparticles is synthesized by using a calcination method, so that the synthesis method is simple to operate, relatively low in cost and small in waste generation amount, and the problems that a nanoparticle catalyst is easy to agglomerate, low in catalytic efficiency and the like can be solved; therefore, the tubular photocatalytic material composed of ZnO nano-particles with efficient photocatalytic activity is obtained.