92results about How to "Easy to achieve large-scale preparation" patented technology

The invention relates to a preparation technology for graphene transparent conductive films, in particular to a large-scale preparation method for stably-doped large-area graphene transparent conductive films. According to the method, the doping effect and stability of the graphene transparent conductive films are improved through a sandwich structure, and a doping agent is in direct contact with the intrinsic surface of graphene and positioned between the graphene and a transparent substrate. The method comprises the following steps: firstly, forming the doping agent on the surface of the graphene or the transparent substrate on an initial substrate; secondly, combining the graphene, the doping agent and the transparent substrate; finally, separating the graphene from the initial substrate so as to prepare the stably-doped large-area graphene transparent conductive films. The graphene serves as an outer-layer protection film of the doping agent, so that the doping stability can be improved; the intrinsic surface of the graphene is in direct contact with the doping agent, so that the pollution of an interface between the graphene and the doping agent by impurities can be avoided, the doping effect of the doping agent can be improved, and the conductivity of the film can be enhanced; the transferring and doping processes of the graphene are combined, so that the large-scale preparation can be easily realized.

The invention relates to a preparation method of super-hydrophobic, super-oleophylic and ultralight sponge. The preparation method comprises two steps of performing functionalized processing on melamine sponge by using an impregnation method and performing a curing reaction after processing. The melamine sponge used by the invention has a large quantity of active functional groups such as hydroxyl groups and amino groups on the surface, the content of the hydrophobic active functional groups on the surface of the sponge is remarkably reduced after the active groups are chemically functionalized, which causes a result that the surface energy of the material is reduced, thus the sponge is endowed with super-hydrophobic and super-oleophylic effects, and a contact angle between the sponge and water exceeds 150 degrees; and the modified melamine sponge belongs to an ultralight material due to density. The method disclosed by the invention has the advantages that raw materials are low in price and easy to available, the process is simple and easy to operate, the large-scale preparation is easily realized, and the like. The sponge prepared according to the preparation method has the advantages of low density, excellent compression resistance, high oil absorbing speed, high oil absorbing rate, high oil and water separation selectivity and the like, is a novel and efficient ultralight-density oil and water separating material, and has a wide application prospect in the fields such as organic chemical reagent treatment, oil-containing wastewater treatment, and leaking crude oil recovery.

The invention discloses a preparation method and application of a three-dimensional graphene electrode for an electrochemical biosensor. The preparation method comprises the following steps of: fixing spongy graphene in which industrially produced foam nickel is taken as a substrate and which has a three-dimensional structure and is synthesized through chemical vapor deposition on a glass or quartz sheet; connecting the spongy graphene with the three-dimensional structure and a wire by using a silver conductive adhesive; and coating organic silica gel on a connection point of the metal wire and the graphene for insulation to obtain a spongy graphene electrochemical electrode with the three-dimensional structure. The three-dimensional spongy graphene electrode has the outstanding characteristics of high conductivity, high specific surface area, high electrochemical stability and the like, is easily subjected to surface functional modification, and has high detection sensitivity to dopamine and nicotinamide adenine dinucleotide; and a highly sensitive electrochemical biosensor for non-enzymatically and selectively detecting glucose can be obtained after the surface of the electrode is modified by Co3O4.

The invention discloses a high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and a method for preparing the same, and belongs to the technical field of metal-basecomposite materials. The method includes compressing superfine aluminum powder until the porosity of the superfine aluminum powder is appropriate, loading the superfine aluminum powder in jackets, sealing the jackets and drilling the peripheries of the jackets to allow an appropriate quantity air to flow into the jackets; placing the jackets in air furnaces, heating the jackets at the low temperatures and thickening oxidation films; increasing the temperatures until the temperatures reach the high temperatures, generating AlN and Al2O3 from nitrogen and oxygen in the air, sintering powder treated at the high temperatures, and carrying out heat processing on the powder to obtain the high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material which is an (AlN+Al2O3)/Al composite material with excellent high-temperature strength and heat resistance. The high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and the method have the advantages that the air is used as oxygen and nitrogen sources, and complicated equipment can be omitted; risks such as aluminum powder combustion can be prevented, the quantities of oxide and nitride can be easily regulated and controlled, and the high-temperature-resistant AlN and Al2O3 co-reinforced aluminum-base composite material and the method are short in period, low in cost, easy to control and suitable for large-scale industrial preparation.

The invention discloses a perovskite solar cell light absorption layer, and the light absorption layer is a film which is obtained by the spinning coating of organic lead halide perovskite precursor solution with organic carboxylic acid on a proper substrate and the heating processing. The organic carboxylic acid is used for controlling the nucleating of organic lead halide perovskite and the growth of crystal, thereby improving the interface contact characteristics of a perovskite light absorption layer and an electron transmission layer. Through the coordination and electrostatic interaction between carboxyl and lead ions, the nucleating of the organic lead halide perovskite light absorption layer and the growth of crystal are controlled effectively, and the organic lead halide perovskite light absorption layer which is large in area, is smooth, is high in quality of crystalline state, is excellent in electrical performance and is stable is prepared, and good ohmic contact between the perovskite light absorption layer and the electron transmission layer is formed. The solar cell prepared in the invention can improve the efficiency and reduce the cost. The preparation technology is simple, and the repeatability is good. The batch production of the solar cell can be achieved.

The invention discloses a method for preparing a natural ore soil loaded nanometer arsenic removal agent. The method comprises the following steps: adding a metal salt solution into natural ore soil, adding an alkali solution into the natural ore soil, and stirring so as to carry out a full reaction; filtering and separating the obtained products, cleaning, drying, grinding and pelleting to prepare round balls with the diameter of 0.5-1.5mm, and finally, drying, sintering, and naturally cooling to room temperature, thus obtaining the natural ore soil loaded nanometer arsenic removal agent. The arsenic removal agent has large specific surface, more active sites can be provided, high arsenic adsorption capacity is realized, aggregation of nanometer materials is avoided, secondary pollution to the water body is avoided, and the method can be widely applied to aspects such as high-arsenic surface water purification treatment and arsenic-containing sewage treatment.

The invention discloses a synthetic method of 2-(4-hydroxyphenyl)-5,7-dimethoxy benzofuran. The synthetic method comprises the following steps of: firstly, performing bromination reaction and Perkin reaction on 3,5-dimethoxy phenylacetic acid and parahydroxyben-zaldehyde which are used as raw materials to obtain 2-(2-bromo-3,5-dimethoxy phenyl)-3-(4-hydroxyphenyl) acroleic acid; then performing series-wound hydroxylation/intramolecular cyclization/dehydrogenation reaction to obtain 2-(4-hydroxyphenyl)-5,7-dimethoxy benzofuran-3-carboxylic acid; and finally, performing decarboxylic reaction to prepare the 2-(4-hydroxyphenyl)-5,7-dimethoxy benzofuran. According to the method, raw materials are low in price and easy to obtain, the synthetic route is simple, quick and efficient, a noble metal and a ligand are not needed for catalysis, and the method is simple and convenient to operate and good in atom economy.

The invention relates to a one-pot method for preparing 3-hydroxyphtalic anhydride. The method comprises the following steps that a compound shown in a formula I is dissolved in organic solvent, and a reaction is conducted for 1-8 h at the temperature ranging from 80 DEG C to 130 DEG C under the alkaline condition in which a copper salt catalyst exists; then a condensing agent is added, and a reaction is conducted for 2-8 h at the temperature ranging from 100 DEG C to 130 DEG C; after purification is conducted through a purification agent, drying and filtration are conducted, and the 3-hydroxyphtalic anhydride is obtained. The method has the advantages of being short in synthetic route, mild in condition, easy to operate, high in yield and the like, and the HPLC purity can be made to be larger than or equal to 95 percent without complex post-treatment. The one-pot method for preparing the 3-hydroxyphtalic anhydride has great use value and social and economic benefits.

The invention discloses a method for preparing an alpha-nickel sulfide and carbon nanometer rodlike composite material in an in-situ mode. The method is mainly characterized in that the method that nanometer rodlike carbon wraps nickel in an in-situ backflow vulcanizing mode is adopted to prepare the alpha-nickel sulfide and carbon nanometer rodlike composite material, and controllable adjusting on the nickel sulfide crystalline phase is achieved through the nanometer limited range action of a carbon nanometer rod . Compared with the existing synthetic technology, according to the alpha-nickel sulfide and carbon nanometer rodlike composite material synthesized through the method, the crystalline phase of the alpha-nickel sulfide is single, the alpha-nickel sulfide is distributed evenly in the carbon nanometer rod, the synthesis process is simple, repeatability is good, and a supercapacitor electrode made of the nanometer composite material has a large specific capacitance value and good circulation stability.

The present invention discloses a super-hydrophilic oleophobic material, which comprises a metal substrate and a micro-nano structure, wherein the micro-nano structure grows on the metal substrate, and comprises a metal phosphate and/or a metal polyphosphate compound. According to the present invention, the super-hydrophilic oleophobic material has advantages of Super-hydrophilicity, underwater ultra-low oil adhesion, good chemical stability and good thermal stability, can resist oil, organic matters, biomass, bacteria, microorganisms and other pollutions, and can be used in the fields of anti-adhesion coatings, oil transportation, oil-water separation, oil spill interception and the like. The invention further discloses a preparation method and applications of the super-hydrophilic oleophobic material.

The invention relates to a porous composite material for generating electric arcs in microwaves and a preparation method thereof. The porous composite material comprises an inorganic porous skeleton and a carbon material loaded on the inorganic porous skeleton. The carbon material accounts for 0.001%-99% of the total mass of the porous composite material; the inorganic porous skeleton is an inorganic material with a porous structure, wherein the average pore diameter is 0.01-1000 microns and the porosity is 1%-99.99%. The porous composite material can be obtained by fully immersing the inorganic porous skeleton or an inorganic porous skeleton precursor into the carbon material and/or a carbon material precursor solution or dispersion liquid, and then heating, drying and carbonizing. The material has excellent mechanical properties, can generate electric arcs in a microwave field to quickly generate high temperature, and can be used in the fields of microwave high-temperature heating, biomass cracking, waste polymer material cracking, petrochemical cracking, carbon fiber composite material recovery, garbage treatment, VOC waste gas treatment, COD sewage treatment, high-temperature catalysis and the like.

The invention discloses a ZIF-8 magnetic self-driving micro-tube motor adsorbent with controllable size and application thereof and belongs to a novel MOFs material adsorbent. With ceiba as a template, a ZIF-8 magnetic self-driving micro-tube motor is manufactured through an in-situ growing method. According to the ZIF-8 magnetic self-driving micro-tube motor adsorbent disclosed by the invention,firstly, a magnetic hollow tube motor is obtained through an impregnation and calcination method; then, ZIF-8 is loaded on the micro-tube motor through the in-situ growing method; and finally, the ZIF-8 magnetic micro motor is obtained. The preparation process is simple, the reaction conditions are mild and easy to control, and the large-scale preparation can be carried out; the obtained MOFs micro-motor adsorbent also has excellent adsorption capacity and dynamic fast adsorption performance, and the motion direction can be controlled in the presence of an external magnetic field, thereby making the adsorption function more intelligent. The adsorbent can effectively adsorb different organic pollutants under the simulated sewage condition, and can move and adsorb in a real water body, thushaving great potential of practical application.

The invention discloses two methods for preparing E-3,5-dimethoxy-4'-oxhydryl diphenylethene and a derivative thereof, comprising the following steps: firstly, methylating 3,5-ihydroxyacetophenone toobtain 3,5-dimethoxy hypnone; then preparing 3,5-methoxyphenylacetic acid by Willgerodt-Kindler rearrangement and hydrolysis reaction; enabling the 3,5-methoxyphenylacetic acid and a 4-hydroxybenzeneformaldehyde compound to carry out Perkin reaction to obtain E-2,3-diaryl crylic acid; finally obtaining the E-3,5-dimethoxy-4'-oxhydryl diphenylethene and the derivative thereof by decarboxylation and isomerization reaction and hydrolysis (or hydrolysis, decarboxylation and isomerization) reaction. An all-trans product obtained by using the method has the advantages of good atomic economy, high yield, convenient operation, low cost, easy realization of mass preparation, and the like.

The invention discloses a flexible lithium metal battery negative electrode, which comprises a current collector, a lithium-philic substance and lithium metal, wherein the lithium-philic substance and the lithium metal are loaded on the current collector; the lithium-philic substance is a substance capable of reducing the nucleation barrier of the lithium. The substance capable of reducing the nucleation barrier of lithium is loaded on the current collector, so that on one hand, the nucleation barrier of lithium can be reduced, the uniform compounding of lithium metal and the current collector is realized, and on the other hand, as a rivet-like effect, the binding force of lithium metal and the current collector can be enhanced, and the preparation of the flexible lithium metal electrode is realized. The invention also provides a preparation method of the flexible lithium metal battery negative electrode. According to the method, the lithium-philic substance can play a role in inhibiting the growth of lithium dendrites and play a rivet role in the negative electrode of the flexible lithium metal battery. The invention also discloses a lithium metal battery. The lithium metal battery has the advantages of reduced hidden trouble of short circuit, improved coulombic efficiency and prolonged service life.

The invention discloses a 4-substituted mino-6-methoxycarbonyl group benzofuran and [2,3-d] pyrimidine compound and a preparing method thereof. 2-amino-3-cyano benzofuran-5-carboxylic acid methyl ester and ortho-formate are dissolved into a solvent A, a reaction is conducted under the acid catalysis and heating conditions, and concentration is carried out after the reaction is finished to obtain an intermediate; then, the intermediate and an amine compound are subjected to a reflux reaction in a solvent B, a reaction product is subjected to separation and purification treatment, and a product is obtained. The compound has potential biological activity, important research value and good application prospects. The preparing method is mild in reaction condition, easy to implement, short in reaction time, high in yield and low in cost, and mass preparation can be easily achieved.

The invention discloses a monolithic solid amine adsorbent and a preparation method thereof. The monolithic solid amine adsorbent comprises a hollow silicon dioxide microsphere skeleton and an amination reagent loaded on the surface of the skeleton. The monolithic solid amine adsorbent prepared by the invention has the advantages of easily available raw materials and low cost, and is easy to realize large-scale preparation. The prepared carbon dioxide adsorbent has the advantages of being high in mechanical strength, good in plasticity, excellent in adsorption capacity, high in cycling stability, capable of reducing pressure drop in practical application and the like when applied to the industrial carbon dioxide trapping process, the adsorption capacity can reach 180 mg g <-1 >, the adsorption capacity is stable and maintained to be 160 mg g <-1 > or above in continuous 50 times of adsorption and desorption cycles, and the carbon dioxide adsorbent has application prospects in the field of CO2 trapping.

The invention discloses a phase-change nanobubble, and a preparation method and application thereof. The nanobubble is prepared by taking an amphiphilic material chitosan-polylactic acid grafted copolymer as a coating material and taking perfluoropentane capable of generating liquid-gas phase transformation under the action of temperature as a bubble core filling substance by adopting an emulsifying solvent volatilization method. The prepared nanobubble is creamy yellow, and the particle size is 101.1+/-2.7 nm. The particle size change is small in two months in vitro, and stability is good. The nanobubble can enhance the ultrasonic imaging effect under action of ultrasonic waves and can be broken by the ultrasonic waves. The chitosan-polylactic acid grafted copolymer nanobubble prepared bythe emulsifying solvent evaporation method is good in in-vitro stability, and ultrasonic imaging can be enhanced. The nanobubble can load an MRI contrast agent, so that the MRI imaging effect of tumor lesions is improved. The nanobubble can also load anti-tumor drugs for targeted therapy of tumors, is a novel multifunctional iconography nano contrast agent integrating diagnosis and treatment, andthus has a great application value.

The invention provides a method for preparing carbon nanofiber aerogel. The method comprises the following steps: performing heat treatment on a beta-lactoglobulin solution at the pH value of 1-3 so as to obtain a beta-lactoglobulin amyloid fiber solution; mixing the beta-lactoglobulin amyloid fiber solution with sugar, and reacting to obtain the carbon nanofiber hydrogel; and drying the carbon nanofiber hydrogel, thereby obtaining the carbon nanofiber aerogel. According to the method disclosed by the invention, the beta-lactoglobulin is self-assembled into amyloid fibers under acidic conditions, the amyloid fiber can act with saccharide molecules under hydrothermal conditions so as to achieve a template effect, the hydrothermal carbon nanofibers are produced, the fibers are lapped to form the carbon nanofiber hydrogel, and then the carbon nanofiber aerogel is obtained after drying. The aerogel prepared in the method is controllable in macroscopic volume, controllable in microscopic diameter and excellent in adsorptive property; and the method is simple, feasible, high in repeatability and capable of easily realizing large-scale preparation. The diameter of the carbon nanofiber aerogel is 30-350nm, and the carbon nanofiber aerogel is capable of adsorbing and filtering multiple pollutants in water.