558 results about "Flower like" patented technology

The invention discloses a preparation method for preparing manganese dioxides in various crystal forms, comprising the following steps of: with divalent manganese salt as a reducing agent and potassium permanganate as an oxidant, adjusting the ratio of raw materials, and reacting in a reaction kettle at 160 DEG C for 1-12h to synthesize both one-dimensional alpha-MnO2 nano fibers and beta-MnO2 nano bars and gamma-MnO2 flower-like structures. The preparation method is simple in preparation process and low in cost; and the product can be used for the research in fields such as super capacitor direction, catalysis and the like.

The invention discloses a preparation method of a self-assembled ultrathin flower-like nickel cobalt phosphide electrocatalytic material, which is applied to the technical field of electrocatalysis. In the preparation method provided by the invention, a low-temperature hydrothermal-phosphating method is adopted in a preparation process, no additional precipitant is added in reaction, and a nickelsalt and a cobalt salt directly react with a solvent to generate OH-ions, thereby reducing the production cost, simplifying the process and being environmentally friendly. At the same time, an electrocatalytic active substance grown in situ on foamed nickel is directly used as a working electrode, not only avoiding the use of a binder, but also greatly enhancing the electrochemical activity of theactive substance. The self-assembled ultrathin flower-like nickel cobalt phosphide prepared by the method provided by the invention shows good electrocatalytic hydrogen evolution performance in an electrochemical test. In addition, compared with the traditional preparation method, the preparation method provided by the invention has the advantages of simple operation, relatively mild synthesis conditions, energy saving, cheap materials, environmental protection and the like.

An apparatus for treating tissue includes a first energy application device to direct energy at tissue of a patient to cause at least one channel to be formed and a controller to control application of energy from the first energy application device to form the at least one channel. The at least one channel may be in the shape of a spiral-like shape or may be in a flower-like shape. Mechanisms are provided to help open channels formed in the human skin structure. A second energy application source may be used to maintain the channel open after formation. The controller may cause the first energy application device to form a plurality of channels of varying depth, width and distribution over the human skin surface. The apparatus to control the application of energy may be operated using a foot-activated pedal.

The invention discloses a flower-like nano-WO3/graphene composite gas-sensitive material and a preparation method and an application thereof. According to the invention, oxidized graphene and soluble tungsten salt are compounded by a microwave-stirring hydrothermal method so as to prepare the flower-like nano-WO3/graphene composite gas-sensitive material. The content of graphene in the nano-WO3/graphene composite gas-sensitive material is 0.1-1.0%. The nano-WO3/graphene composite gas-sensitive material provided by the invention has unique and uniform morphology, has high sensitivity to aniline gas and has good selectivity. Operating temperature is as low as 80 DEG C. The preparation method adopts microwave heating and stirring. The technology is advanced, reaction time is short and cost is low.

The invention discloses an anode material for lithium sulfur batteries and a method for preparing the anode material. The method includes compounding flower-like zinc oxide and polydopamine under the effect of template agents to prepare polydopamine/flower-like zinc oxide; carrying out carbonization and acid treatment on the polydopamine/flower-like zinc oxide to form three-dimensional flower-like carbon structures; filling the obtained three-dimensional flower-liked carbon structures with sulfur; coating a layer of conductive polymers PDA (polydopamine) on obtained carbon sulfur composite materials. The three-dimensional flower-like carbon structures are used as carriers. The anode material and the method have the advantages that the electrochemical performance and the stability of elemental sulfur which is used as the anode material for the lithium sulfur batteries can be effectively improved; the anode material for the lithium sulfur batteries has flower-like morphology, accordingly, the specific surface area can be effectively increased, and the anode material can be in sufficient contact with electrolyte; the sulfur can be supported by hierarchical holes of the formed three-dimensional flower-like carbon structures, the conductive polymers can be coated by the hierarchical holes, accordingly, loss of polysulfide can be effectively inhibited, and the conductivity and the cyclic stability of electrodes can be improved.

The present invention discloses a method for producing flower-like sphere type nanometer magnesium hydroxide with characteristics of light weight and high specific surface area. The method comprises: (1) preparing a magnesium salt aqueous solution with a certain concentration in a reaction container; (2) preparing an alkaline solution with a certain concentration in a container; (3) adding a certain amount of a dispersing agent to the solution obtained in the step (1) or solution obtained in the step (2) before a reaction; and (4) slowly adding the solution obtained in the step (2) to the solution obtained in the step (1) in a dropwise manner, or slowly adding the solution obtained in the step (1) to the solution obtained in the step (2) in a dropwise manner, reacting to obtain a white precipitate, aging, and carrying out centrifugation washing on the white precipitate (magnesium hydroxide) so as to remove other impurity ions through the washing to obtain the white gelatinous solid. According to the present invention, the special shape magnesium hydroxide preparation method with characteristics of easy operation, no environmental pollution, easy amplification and low equipment requirement is provided, and the magnesium hydroxide synthesized by the method of the present invention is mainly used for printing and dyeing wastewater treatments, heavy metal ion adsorption, and flue gas desulfurization agents.

The invention relates to a flower-shaped copper oxide catalyst and a preparation method and application thereof to the direct synthesis of an organic silicon monomer. The preparation method of the flower-shaped copper oxide catalyst comprises the following steps: (1) adding copper salt to ethanol or mixed solvent of ethanol and water to form solution; and (2) stirring and adding ammonia, strong alkali and nitrate to the solution in sequence to obtain a homogeneous solution, transferring the homogeneous solution to a reactor to carry out the thermal reaction of a solvent, and controlling the amount of the product of reaction, the reaction temperature and the reaction time to obtain the lower-shaped copper oxide catalyst. The preparation process of the flower-shaped copper oxide catalyst has simple experiment procedures and low cost, is convenient to operate, is environment-friendly and can be produced on a large scale. The prepared flower-shaped copper oxide powder can be used as the catalyst to the field of the direct synthesis of the organic silicon monomer, and particularly, the flower-shaped copper oxide powder is highly selective for the dimethyldichlorosilane monomer.

The invention provides a three-dimensional flower-like layered double hydroxide and a preparation method thereof. In the preparation of the three-dimensional flower-like layered double hydroxide, aluminum sulfate or aluminum ammonium sulfate, soluble divalent metal salt and alkali are used as raw materials; the characteristic that sphere-like micron-sized aluminium hydroxide particles can be rapidly formed by solution of aluminum sulfate and aluminum ammonium sulfate, of which the pH value is 3.7 to 4, under a temperature of 95 to 100 DEG C is utilized; after being prepared, the micron-sized particles react with the divalent metal salt and the alkali, so that a great amount of LDH (Layered Double Hydroxide) crystal nuclei can be rapidly formed on the surface of aluminium hydroxide; and finally, three-dimensional flower-like structure LDH are formed. A prepared LDH laminate has a thickness of about 10 to 20nm; and the BET (Brunauer-Emmett-Teller) specific surface area of the prepared LDH laminate is greater than 140 m<2>/g and is much greater than that of common LDH. The preparation method disclosed by the invention is simple, is simple and convenient to operate, does not require high temperature and high pressure, does not need to use an organic solvent and a surfactant and is low in cost. The three-dimensional flower-like layered double hydroxide can be widely applied to the fields of adsorption separation, catalysis, high polymer materials and the like.

The invention discloses a three-dimensional flower-shaped In ₂ S ₃ /In ₂ o ₃ A composite microsphere photocatalytic material and a preparation method thereof belong to the field of pollution control and technology. Using thioacetamide as the sulfur source, the In ₂ o ₃ The lattice oxygen in is replaced by sulfide ions, and in the flower-like In ₂ o ₃ In situ generation of In on the surface ₂ S ₃ nanosheets, forming a heterojunction structure; three-dimensional flower-like In ₂ o ₃ The shape is uniform, the particle size is 3.0–6.5μm, In ₂ S ₃ Nanosheets wrapped in In ₂ o ₃ The surface of micron flowers. The raw materials used in the invention are cheap and easy to obtain, the reaction conditions are easy to control, and the requirement for equipment is low, which is an environment-friendly preparation method. In ₂ S ₃ /In ₂ o ₃ Composite microspheres not only improve the In ₂ o ₃ The utilization rate of visible light and the suppression of the recombination of photogenerated carriers have good application value and prospects in the field of photocatalytic degradation of volatile organic pollutants.

The invention discloses a preparation method of a flower-like tin dioxide and graphene composite material, belonging to the technical field of functional composite materials. According to the preparation method disclosed by the invention, the flower-like tin dioxide and graphene composite material with controllable morphology is prepared from graphene oxide, tin chloride pentahydrate and sodium hydroxide as raw materials by adopting the steps of mixed stirring, hydro-thermal synthesis, solid-liquid separation, cleaning and drying. The method disclosed by the invention has the advantages of simpleness, convenience for operation, lower production cost, no influence on the environment and convenience for popularization and application; and in the method, water is used as solvent and no surfactant is used. The flower-like tin dioxide and graphene composite material prepared by adopting the method can be widely applied to new energy source devices such as a lithium ion battery, a solar cell, a super capacitor and the like, or can be applied to the fields of catalyst carriers, information materials and the like.

The invention discloses a method for preparing flower-like nanometer gold, relating to nanometer gold. The invention provides a method for preparing the flower-like nanometer gold covered by trypsinase with higher stability, better biocompatibility and more uniform particles. The flower-like nanometer gold consists of nanometer particles and is covered by the trypsinase, and the particle diameter of the product is between 100 and 200nm with uniform shapes and particle diameters. Chloroauric acid is mixed with trypsinase solution to obtain a mixed liquid of the chloroauric acid and the trypsinase solution; ascorbic acid is added into the mixed liquid of the chloroauric acid and the trypsinase solution to obtain reaction solution; and the reaction product is collected and washed to obtain the product of the flower-like nanometer gold.

The invention discloses a surface enhanced Raman scattering detection chip and a preparation method thereof. In-situ growth of nanometer flower-like ZnO on a silicon wafer is achieved by utilization of a hydrothermal method. A three-dimensional ZnO-Ag composite material is prepared by utilization of a physical non-solvent magnetron sputtering method. The composite material has high surface enhanced Raman effects. In addition, the composite material is modified with probes so as to construct a chip with the surface enhanced Raman effects. By modification with sulfydryl type probe molecules, explosive molecules with low original Raman activity can be captured on the chip. Through synergetic resonance, the probes and the composite material generate surface enhanced Raman signals, so that the sensitivity of the chip to the explosive molecules is better than that of a simple substrate not modified by probes. In addition, the chip shows good Raman effects for a plurality of explosives and has single high selectivity for the explosive TNT.

The invention discloses a nanoscale flower-like zinc oxide preparation method. The flower-like zinc oxide is prepared by ultrasonic-assisted hydrothermal method, and has uniform particle distribution and a nanoscale flower-like structure with uniformly growing slices as petals. The nanoscale flower-like zinc oxide preparation method provided by the invention has the advantages of easily-obtained materials, simple apparatus and process, high efficiency, high speed, high yield, and so on, and is suitable for large-scale industrial production.

The invention discloses a preparation method of nano-nickel oxide for an electrode material of a supercapacitor, and the nano-nickel oxide prepared by the method. The preparation method comprises the following steps: mixing NiCl2.6H2O and a choline chloride-based deep eutectic solvent to obtain a solution I with the mass concentration being 10 to 30 g/L; and heating to 120 to 150 DEG C, mixing 100 to 300 parts of deionized water and 1,000 parts of the solution I, reacting for 0.5 to 2 hours, performing centrifugal separation to obtain precipitate, and washing, drying and calcining the precipitate to obtain the nano-nickel oxide. The preparation method is mild in condition, short in consumed time and suitable for large-scale industrialized production. The prepared flower-like nano NiO crystal grains have the grain sizes of being less than 10 nm, are distributed uniformly and are large in specific surface area, so the supercapacitor prepared by taking the nano NiO crystal grins as the electrode material has high reversible capacity and cycling performance, and the specific capacity of the supercapacitor is still stabilized to be close to 460 F/g after 3,000 times of charging/discharging circulation.

The invention relates to a carbon nanotube/molybdenum disulfide nanosphere composite material and a preparation method thereof. The preparation method comprises the steps of firstly preparing a nitrogen-doped carbon nanotube, and then reacting to generate a nitrogen-doped carbon nanotube/flower-like molybdenum disulfide nanosphere composite material. The composite material serves as a super-capacitor electrode material and shows excellent electrochemical performance. In addition, the preparation process is simple, green and environmental protection, serves as a new energy material and has great potential applications in the field of equipment such as a super-capacitor and a lithium ion battery.

The invention discloses a preparation method for a flower-like Ag2CO3/Mg-Al-NO3LDHs nanometer material. The preparation method comprises the following steps: adopting an ion exchange method, using flower-like Mg-Al LDHs as a precursor, dropwise adding a silver nitrate solution, continuously stirring for 1 h at the room temperature, conducting centrifugal separation on the product, cleaning with deionized water, and finally drying in a baking oven at 60 DEG C. The preparation method has the advantages that according to the prepared flower-like Ag2CO3/Mg-Al-NO3 LDHs nanometer material, through a scanning electron microscope and a transmission electron microscope, the condition that Ag2CO3 nanometer particles are well dispersed on the lamella of flower-like Mg-Al-NO3 LDHs can be clearly observed, and under visible light, not only can dye with different ion types be efficiently degraded, but also a degradation effect is played on a phenol organic solution. The photocatalysis property attributes to the condition that under the modification of Ag2CO3 nanometer particles, heterojunction is formed between Mg-Al-NO3 LDHs and Ag2CO3, so that effective separation and transfer of electrons and holes are realized.

Disclosed are a flower-like nanometer cobalt hydroxide material and a preparation method thereof. The material is synthesized by the self-assembling method. The preparation method includes that metallic cobalt is reacted with alkali in an oil and water double-phase system at the room temperature, and the flower-like nanometer cobalt hydroxide material is prepared under a guiding effect and a wrapping effect of a soft template with the participation of the soft template. The preparation method is simple to operate and easy to control. The size of a multi-dimensional structure a prepared cobalt hydroxide nanoflower ranges from 300 nanometers to 500 nanometers approximately, the multi-dimensional structure of the nanoflower is self-assembled by cobalt hydroxide plates, and the nanoflower is high in specific surface area and pore volume, and can be applied to fields of battery materials, catalytic materials and the like.

The invention relates to a preparation method of three-dimensional multistage SnO2 nanoflowers, which is characterized in that the initial raw materials for preparing the SnO2 nanoflowers are SnCl2.2H2O, NaOH, CTAB (cetyltrimethylammonium bromide) and deionized water. The preparation process comprises the steps of hydrothermal treatment, centrifuging, washing, drying and roasting. The structural feature of the prepared SnO2 nanoflowers is a three-dimensional multistage flower-like structure assembled from three-dimensional SnO2 nanosheets. The diameters of the prepared SnO2 nanoflowers are 1-3 mu m, and the nanosheets are 20-40nm thick. The invention discloses a specific preparation method of the three-dimensional multistage SnO2 nanoflowers. The raw materials for preparing the SnO2 nanoflowers are cheap and accessible; the method for preparing the SnO2 nanoflowers is environment-friendly, and has the advantages of low hydrothermal temperature and low energy consumption; the method for preparing the SnO2 nanoflowers is simple to operate, also has the advantages of high repeatability and high yield, and is mass production; and the three-dimensional multistage SnO2 nanoflowers have special and peculiar shape, can be used as a material for sensors, catalysts, catalyst supports and the like, and has favorable application prospects.