70results about How to "High economic and practical value" patented technology

Photocatalyst preparation method for glass fiber net carried TiO2 fixed membrane belongs to degradation pollution technique field. Use flexible glass fiber net after heat treatment as carrier; take butyl titanate, alcohol, water and nitric acid as volume share of 1:3~12:0.02~0.2:0.01~0.1 to prepare sol-gal liquid; use soakage-pulling method to make hard coat; after airing, finish hydrolysis and polycondensation; finally, bake to remove organic and make TiO2 fastness; repeat process and obtain TiO2 fixed membrane with determined thickness. It is easy to operate and produce in large scale; the product has high purity and can be used repeatedly; the TiO2 fixed membrane photocatalyst of this invention has high activity, good durability, and large specific surface; the membrane module is convenient to assemble, with cheap price and wide application both for drink water advanced treatment, pretreatment and terminal treatment for toxic harmful high content hard-degradation organic waste water, and treatment for polluted air.

The invention discloses a new technique for synthesizing Leuprorelin by the combination of a solid phase method and a liquid phase method, which comprises the following steps of: 1) using Fmoc-Pro-OH and HMPB-AM resin as starting material, and obtaining Fmoc-Pro-HMPB-AM resin; 2) coupling in sequence and synthesizing Leuprorelin precursor peptide-HMPB-AM resin with full protective lateral chains; 3) cutting the resin and obtaining Leuprorelin precursor peptide with full protective lateral chains; 4) processing the Leuprorelin precursor peptide with full protective lateral chains with methylamine, and obtaining Leuprorelin with full protective lateral chains; 5) removing the protective groups of the lateral chains of Leuprorelin with full protective lateral chains, and obtaining the crude product of Leuprorelin; and 6) conducting separation and purification and freeze drying to the crude product of Leuprorelin, and obtaining refined Leuprorelin peptide. The technology has the capability of large-scale production, easy operation, stable technique, low production cost and total yield of more than 50 percent, and has considerable economical and practical value and wide application prospect.

The invention relates to a method for preparing Nesiritide. In the method, HMPB-AM resin is taken as an initial raw material, amino acids with Fmoc blocking groups are sequentially connected in a solid phase synthesis way under the action of condensing agent and transpeptidase reagent to obtain side chain full-protection linear Nesiritide HMPB-AM resin; linear Nesiritide raw peptides are obtained by schizolysis, Nesiritide raw peptides are obtained by liquid phase oxidation, and Nesiritide fine peptides are obtained by purification, salt transfer and freeze drying. The invention has the advantages of simple operation, easy post treatment, few raw materials, low cost, high yield coefficient, and the like, thereby having considerable economy and utility value and also having extensive application prospect in the polypeptide drug design synthesis field.

The invention discloses a carbon nitride-supported molybdenum nitride nanoparticle photocatalyst, and a preparation method and an application thereof. The preparation method comprises the steps: firstly, preparing ultra-thin precursors of CN and Mo2N, and then preparing a Mo2N aqueous solution and a CN ethanol dispersion solution; and then dropping the CN ethanol dispersion solution into the Mo2Naqueous solution in a 70 DEG C oil bath, stirring and mixing, then centrifuging, washing and drying to obtain the carbon nitride-supported molybdenum nitride nanoparticle photocatalyst. The photocatalyst has the advantages of wide light absorption range, property of high decomposition of water to produce hydrogen, low electrical resistivity, fast current carrier transfer ability, high photogenerated current carrier separation ability, low current carrier recombination rate, good hydrogen evolution circulation stability and the like, is used for photocatalytic decomposition of water to producehydrogen, and has the highest hydrogen production rate reaching 0.89 [mu]mol.g<-1>.h<-1>. The preparation method has the advantages of simple operation, low cost and non-toxic used raw materials, andconforms to production of the concept of environmental protection.

The invention provides an insulation shielding cover for electric power detection. The insulation shielding cover is used for shielding a cross arm for live working and comprises a cross arm cover body, two wire fixing mechanisms, an insulation baffle plate and a detection device, wherein the cross arm cover body includes a first body and a second body; the two wire fixing mechanisms are respectively, oppositely and fixedly disposed on an outer wall of the first body; the insulation baffle plate includes two fan-shaped plate bodies which are located on the same plane; and the detection device includes an alarm, a voltage acquisition module which is disposed inside a groove, and a controller which is electrically connected with the alarm and the voltage acquisition module. According to the insulation shielding cover, a second body is slidably disposed in the first body in a sleeved manner, the second body can be stretched out and drawn back in the first body, the length of the shielding cover is adjusted according to the length of the cross arm so that a single shielding cover can be suitable for cross arms of various sizes; meanwhile as the detection device is disposed, the magnitude of voltage borne by the cross arm is detected at any time; and when the magnitude of voltage exceeds the safety value borne by a human body, an alarm device gives an alarm in time, thereby improving the safety of the shielding cover.

The invention discloses a reaction cup arrangement system for a magnetic particle chemiluminiscence immunity analyzer. The reaction cup arrangement system comprises a cup leaking device and a rotating disc cup arrangement device, wherein the cup leaking device comprises a reaction cup cabin; a cup leaking hole is formed in the bottom of the reaction cup cabin; an assistant cup leaking mechanism is arranged below the cup leaking hole; the rotating disc cup arrangement device comprises a centrifugal mechanism and a cup arrangement channel; the centrifugal mechanism is mainly used for conveying reaction cups into the cup arrangement channel; a limiting inlet for limiting the reaction cups to be fed in a lying manner is formed in the cup arrangement channel; a conveying device is arranged inside the cup arrangement channel; and a cup arrangement groove is formed in the cup arrangement channel. By adopting the scheme, a great number of reaction cups can be placed in the rotating disc cup arrangement device under control, the great number of the reaction cups are further rapidly arranged in an upright manner by using the rotating disc cup arrangement device, then the reaction cups can be taken and used by the analyzer, the detection efficiency of the analyzer is effectively improved, the workload and the working intensity are alleviated, great economic practical values can be achieved, and the automatic scientific development progress of laboratories can be accelerated.

The invention provides an electric heating air filtration element and a low-energy-consumption high-temperature disinfection and sterilization device for air. The electric heating air filtration element comprises high-temperature-resistant primary filter cotton, a metal aluminum net, an insulating electric heating wire and a high-temperature-resistant efficient air filtration element, wherein themetal aluminum net is mounted at an air inlet of the high-temperature-resistant efficient air filtration element and is attached to an aluminum-foil paper partition plate of the air filtration element; the insulating electric heating wire is fixed on the metal aluminum net, and the primary high-temperature-resistant filter cotton covers the surface of the metal aluminum net; and two ends of the insulating heating wire are connected with a working power supply. The insulating electric heating wire in the electric heating air filtration element can heat the primary filter cotton and the high-temperature-resistant efficient air filtration element at the same time in a power-on stage, and bacteria and viruses attached to the primary filter cotton and the high-temperature-resistant efficient air filtration element are subjected to high-temperature disinfection and sterilization; and the sterilization device achieves low-energy-consumption high-efficiency air sterilization and purification effects through filtering and sterilization control at different time periods.

The invention discloses an in-situ carbon-coated copper-nickel alloy material photocatalyst and a preparation method and an application thereof. The preparation method comprises the steps: firstly, acopper-nickel bimetallic organic framework (CuNiBTC) is prepared through a hydrothermal method, and a CuNiBTC material is obtained through centrifugation, washing and drying; and vacuum sealing is carried out on a sample by using a quartz tube, and calcining is carried out at high temperature to obtain the in-situ carbon-coated copper-nickel alloy nanoparticle photocatalyst. The in-situ carbon-coated copper-nickel alloy nanoparticle photocatalyst has the advantages of wide light absorption range, high carbon dioxide reduction performance, low electrical resistivity, rapid carrier transfer capability, high photon-generated carrier separation capability, low carrier recombination rate and good carbon dioxide conversion cycle stability, is used for near-infrared light catalytic reduction of carbon dioxide, and has the carbon monoxide precipitation rate up to 11.205 [mu]mol*g<-1>*h<-1>. The preparation method is simple to operate and low in cost, the used raw materials are non-toxic, and the product has a certain economic value and conforms to production of the environmental protection concept.

The invention discloses a solid phase method for synchronizing Argatroban, including the following steps: (1) (2R, 4R)-N-Fmoc-4-methyl-2-nipecotic acid, macromolecule resin, protective amino acid, coupling reagent and organic base are used as starting raw materials to form (2R, 4R)-N-Fmoc-4-methyl-2-nipecotic acid-resin; (2) Fmoc protection is removed, and a solid phase method is adopted to couple Fmoc-Arg(X)-OH so as to obtain Fmoc-Arg(X)-(2R, 4R)-4-methyl-2-nipecotic acid-resin; (3) the Fmoc protection is removed, and after 3-methyl-1,2,3 4-tetrahydroquinoline-sulfonic acid chloride is coupled, complete full protection Argatroban-resin is obtained; (4) complete peptide protection Argatroban-resin is reacted with a side chain separated blocking group so as to gain the crude product of the Argatroban; and (5) after the operation of recrystallization is carried out, the Argatroban with high purity is obtained. The technical process of the invention has the advantages of simple reaction operation, easy post treatment, less raw material, low cost, more than 80 percent of total yield, considerable economic and practical value as well as broad application prospect in the field of designing and synchronizing polypeptide drugs.

The invention provides an easy-to-install high-bay lamp with high performance and low cost, which includes a lamp body frame, a reflector, a lamp panel, a diffuser plate, a bead and a power supply assembly. The component is installed on the frame of the lamp body, and a V-shaped hook is installed on the frame of the lamp body. A hanging chain connected with the hook is installed on the V-shaped hook. It is fixed on the frame of the lamp body, and the light source assembly is installed on the lamp board, and the light source assembly is connected with the power supply assembly. The high-bay lamp with high performance and low cost that is easy to install provided by the present invention is compatible with Compared with the existing technology, it has the advantages of reasonable structural design, good dustproof performance and heat dissipation performance, long service life, beautiful appearance, easy installation, and low production cost, and can be widely used in outdoor lighting, parking lot and other lighting fields, etc. place, has great economic and practical value.

The invention relates to a dietary therapy product, in particular to a simple and convenient dampness-treating food capable of dispelling cold and fundamentally treating damp and hot symptom of a human body. Based on the traditional Chinese medicine, two product parts comprising a main module and a selectable module are prepared by selecting five food materials including red beans, Yoyumin, ginger, Chinese date and brown sugar through reasonable proportion, scientific process and strict flow; and the two parts are matched to generate the simple and convenient dietary therapy product which can dispel wind and cold and can treat damp heat. The product has high pertinency and obvious effect, is convenient to eat, has the obvious effects of nourishing blood, tonifying middle burner, clearing dampness and removing dampness, also has the effects of regulating spleen and stomach, loosening bowel to relieve constipation, promoting blood circulation and the like, can achieve the effects of fundamentally treating damp heat, strengthening body, keeping fit and prolonging life when being eaten for a long time, and can be widely applied to diet therapy of the elderly, the weak, women and children. In addition, the product has the characteristics of simple and readily available materials, simplicity and convenience in preparation, low cost and the like, and has wide market prospect and high economic value.

The invention relates to a multi-purpose flammable honeycomb briquette forming block, in particular to a high-efficiency, energy-saving and environmental protection flammable honeycomb briquette forming block for two-dimensional compact array and three-dimensional stack use, and larger-scale combustion operation. The multiple-purpose flammable honeycomb briquette forming block is set out to two aspects of combustion component and outline structure, overall improves the combustion performance of the honeycomb briquette, creates a novel honeycomb briquette forming block, and is characterized by easy combustion, light weight, high efficiency, environmental protection and the like. In addition, the multiple-purpose flammable honeycomb briquette forming block has the advantages of simple material drawing, convenient preparation, low manufacturing cost, wide application scope and market application prospects, and higher economic practical value.

The invention discloses an on-line remote detection method and device for detecting the state of a disc-type insulator, and the method comprises the steps: firstly obtaining contaminated conductance of a low-level end insulator of a monitoring insulator string through calculation; obtaining a representation value of insulator contamination through calculation, so as to represent the contamination degree of an insulator; building the relation between a proportion value Kn of an insulator voltage at a low-level end of the insulator string to an insulator string voltage and the contaminated conductance in a lab, and determining the number of zero-value insulators in the insulator string. According to the invention, the detection index of the zero-value insulators in the insulator string is very simple, and the number of the zero-value insulators is directly pointed out. When the number of insulators in the insulator string is large, several zero-value insulators are allowed to exist at the same time, thereby clearly pointing out the number of insulators. Moreover, the maintenance can be arranged according to the order of priority.

The invention discloses a method for preparing Eptifibatide with a solid phase method, which comprises the following steps of: 1) selecting Sieber resin to remove Fmoc, and obtaining H2N-Sieber resin; 2) adopting Fmoc / tBu solid phase method to couple and synthesize linear peptide Eptifibatide-Sieber resin with full protective lateral chains in sequence; 3) conducting solid phase oxidation to the resin, and obtaining oxidant peptide Eptifibatide-Sieber resin with full protective lateral chains; 4) cutting the resin and removing the lateral chain protection, and obtaining crude product of Eptifibatide; and 5) conducting separation and purification, and breeze drying by a freeze dryer, and obtaining refined Eptifibatide peptide. The technology is characterized by simple operation, easy post treatment, less investment of raw material, low cost, high yield and the like, and has considerable economical and practical value and wide application prospect in the field of polypeptide drug design and synthesis simultaneously.

The invention relates to the field of medicinal chemistry, and discloses a two-step method for preparing norathyriol. The method comprises steps that: 2-bromine-4,5-dimethoxybenzoic acid is added to 1,2-dichloroethane; thionyl chloride is added to the mixture, and the mixture is heated and refluxed for 1 hour; zinc chloride and 3,5-dimethyoxy phenyl hydroxide are added to the mixture, the mixtureis stirred, and are heated for 2 to 4 hours under a temperature of 40 to 80 DEG C; the 1,2-dichloroethane solvent is removed through reduced-pressure distillation; 10% to 30% of a sodium hydroxide solution by mass is added to the mixture, and the mixture is heated and refluxed for 2 to 3 hours, such that 1,3,6,7-xanthone tetramethoxide is produced; 1,3,6,7- xanthone tetramethoxide is added to an ethylene glycol solvent, and hydrochloric acid is added to the mixture; the mixture is heated and refluxed for 3 to 5 hours, such that norathyriol is obtained. Compared to prior arts, the preparation method provided by the invention has advantages of short synthetic route, less step, simple operation, and high yield. The raw materials adopted in the method are cheap and easy to obtain. The processes are safe, and bring low toxicity. The method is environment friendly, and is suitable for industrialized productions. The method provides high economical and practical values.

The present invention relates to a powdered nutritional food, and especially relates to a powdered nutritional food taking six plant fruits of purple rice, sesame, peanuts, black beans, lotus seeds, and Chinese chestnuts as main materials, taking five plant fresh leaves of tea, mint, bitter thorn core, stephania delavayi diels, and coriander herb as auxiliary materials, and being able to take account of two purposes of daily diet and brain health and body strength. According to the present invention, based on the traditional Chinese medicine theory, the product-related food materials are mixed and matched by reasonable proportion, rigorous processes and delicate operations to form three modules of dried fruits, tea vegetables and spices, thus each beneficial ingredient is fully played, and a new nutritional effect is formed. The resulting product is rich in a plurality of nutrients needed by human bodies, has effects of strengthening brain and body, conditioning spleen and stomach, and relaxing bowel, is a healthy food being convenient for diet and therapy and capable of being vegetable dish or meat dish, can be widely applied for daily foods of general population and diet recuperation needs of frail population, and has broad market prospects and high economic values.

The invention discloses a nanometer Ni-P conductive ink and a preparation method thereof, belongs to the field of nanometer materials. The conductive ink comprises one or more of amorphous nano Ni-P powder, water, ethanol and ethylene glycol, one or more of oleic acid, polyethylene glycol and OP-10 emulsifier; the mass content of the amorphous nano Ni-P powder is 10-30%; and the grain size is 30-85 nm. The preparation method orderly comprises the following steps of: preparing nickel salt and sodium hypophosphite into a water solution according to the molar ratio of 0.3; adding the prepared reaction mixing solution into a nucleation revulsant to trigger reaction and disperse; centrifuging, edulcorating and drying the reacted mixing solution to prepare the amorphous nano Ni-P powder; and preparing the conductive ink according to the ratio, wherein the nucleation revulsant is sodium borohydride and / or potassium borohydride. The invention provides the nano Ni-P conductive ink with low price and excellent performance, and the preparation method thereof.

The invention relates to a dietotherapy product, especially to a simple dietotherapy product able to radically cure human body damp-heat. Based on traditional Chinese medicinal theories, the product of the invention carefully chooses 12 food materials of red bean, Coix seed, longan, jujube, granulated sugar, lotus seed, lily, ginger, brown sugar, black soya bean, Gorgon fruit and refined salt. By means of strict proportion and scientific technology, two large parts: a main module and an optional module, can be formed in a manner of evolving new things from the old, and a simple dietotherapy product with strong pertinence and for radical cure of damp-heat can be generated through reasonable collocation. The product of the invention has the advantages of substantial effect and convenient eating, and has obvious functions of nourishing blood and the middle-jiao, promoting urination and clearing damp, as well as regulating the spleen and stomach, looseing the bowel to relieve constipation, promoting blood circulation, etc. Long-term eating of the product in the invention can reach the effects of radically curing damp-heat, building up body and prolonging life span, so that the product is widely suitable for diet recuperation of the elderly, the weak, women and children. Besides, characterized by easily available raw materials, simple preparation and low cost, etc., the product provided in the invention has broad market prospects and extremely high economic value.

The invention belongs to the technical field of plastic pipeline repair, and particularly relates to a polyolefin pipe easy to repair quickly, and a repair process method thereof. According to the polyolefin pipe, common PP and PE materials are modified, and therefore the polyolefin pipe contains evenly-distributed epoxy groups, has the advantages of excellent chemical corrosion resistance, abrasion resistance, high insulativity, high-temperature resistance, no toxicity, light weight and convenient in transportation and installation, and is an excellent product which is easy to repair compared with common PP pipes. Glass fiber fabric impregnated with resin generates cross-linking reaction under the action of light, heat and an initiators to form three-dimensional cross-linked insoluble and infusible physical structure molecules; once a monomer is initiated, free radicals are generated, and molecular chains are rapidly increased to form macromolecules, wherein comb-shaped macromolecule polyacrylamide is capable of improving the surface interface action; the physical and chemical properties of a cured product can be improved, and therefore the pipeline repair process requirements and the pipeline use and long-term reliability requirements can be met; and the polyolefin pipe easy to repair quickly contains the epoxy groups, and therefore self-repair can be realized.

The invention relates to a pretreatment strengthening method of recycled aggregate and a preparation method of recycled concrete. The pretreatment strengthening method comprises the following steps: firstly, washing the recycled aggregate with low-pressure water, naturally airing the material, soaking in an aggregate strengthening solution for 6-12 h, taking out the material, and naturally airing the material to obtain the strengthened recycled aggregate; the preparation method of the recycled concrete comprises the following steps: sequentially standing, precipitating and filtering a washing solution obtained after washing to obtain a regenerated solution; and stirring the regenerated liquid, cement, EVA rubber powder, a polycarboxylate superplasticizer and reinforced regenerated aggregate to obtain the regenerated concrete. Compared with the prior art, the strength of the recycled aggregate can be improved, the performance of the prepared recycled aggregate concrete can be effectively improved, and the application range of the recycled aggregate can be expanded.

The invention relates to a method for microwave-ultrasonic-assistant hydrolysis extraction of Caesalpinia spiosa pod gallic acid. The method comprises adding deionized water into Caesalpinia spiosa pod powder as a raw material, carrying out reflux condensation, carrying out filtration to obtain a filtrate, adding an ion exchange resin catalyst and an antioxidation reagent into the filtrate and carrying out microwave-ultrasonic-assistant heating extraction to obtain gallic acid, wherein in heating, under the action of ionic liquid catalysis, tannic acid is decomposed to form gallic acid so that a gallic acid yield is effectively improved. The ion exchange resin is convenient for recovery, can be recycled, is economic and environmentally friendly, is suitable for large scale production and has high economic and practical value.

The invention provides an intelligent efficient vegetable irrigation system. The system comprises a water pump, a water storage system, a water pipe, vertical columns and nozzles mounted on the vertical columns. The water pump is connected with the water storage system and the vertical columns through the water pipe, the water pump is connected with a relay for controlling on and off of the water pump, and the relay is connected with a control unit. The intelligent control based intelligent efficient vegetable irrigation system has advantages of high irrigation efficiency, safety and reliability in use and effectiveness in cost saving. By an intelligent control mode of the irrigation system, working pressure is greatly relieved for workers, production cost is saved, and great economic and practical values are achieved.

The invention relates to a protection controller for an opening coil and a closing coil of a vacuum circuit breaker and a method. The protection controller for the opening coil and the closing coil of the vacuum circuit breaker comprises binding posts, an opening signal indicating light, a closing signal indicating light, and a main control opening and closing circuit board. The main control opening and closing circuit board comprises a main opening control chip, a main closing control chip, an opening power supply rectification unit, a closing power supply rectification unit, a time-delay outage circuit, an opening voltage detection unit, a closing voltage detection unit, an opening coil driving electronic switch and a closing coil driving electronic switch. The time-delay outage circuit and a coil disconnection indicating unit are connected to the main control chips. The opening coil driving electronic switch is connected with the main opening control chip through the time-delay outage circuit. The closing coil driving electronic switch is connected to the main closing control chip through the time-delay outage circuit. The opening power supply rectification unit is connected to the main opening control chip through the opening voltage detection unit. The closing power supply rectification unit is connected to the main closing control chip through the closing voltage detection unit. The coil disconnection indicating unit is respectively connected to the opening signal indicating light and the closing signal indicating light. The protection controller for the opening coil and the closing coil of the vacuum circuit breaker and the method solve the technical problem that the opening coil and the closing coil often burn out.

The invention discloses a nut cracker. The nut cracker comprises a first solid hemispherical shell and a second solid hemispherical shell, wherein the first hemispherical shell comprises a handle, a first groove and a plurality of second grooves, and the first groove and the plurality of second grooves are partially overlapped to form an incomplete sphere; the second hemispherical shell comprises a third groove, fourth grooves and a pressure applying device, wherein a first through hole is formed in the middle of an arc-shaped surface of the third groove; the pressure applying device comprises an inner rod, an outer rod and a rotation shaft, a plurality of connecting bars are rotatably connected to the outer wall of the outer rod, and downward extend out of the rotation shaft slantwise and form an included angle of 20-70 degrees with the outer rod, pressure heads are arranged on the other ends of the connecting bars, the surfaces of the sides, provided with metal teeth, of the pressure heads face the containing space of nuts, and the nuts are squeezed under the downward movement of the outer rod, so that the shells of the nuts are squeezed to be broken. The nut cracker can break shells of a plurality of nuts, and has the advantages of being simple in structure, safe and convenient, and high in work efficiency.

The invention relates to a vinegar drink product, in particular to a multi-effect vinegar drink product which is prepared from glutinous rice vinegar, garlic, Chinese parsley, white sugar and monosodium glutamate. On the basis of the theory of traditional Chinese medical science, the defects of single using mode, laterality of nature and flavor, few effects, narrow application range and the like in the vinegar drink product which is known at present are overcome, and the vinegar drink product which is suitable for daily health-care drinking and has the effects of beautifying, protecting skin, relaxing tendons, activating collaterals, treating dermatitis, removing flecks, relieving itching and swelling, resisting bacteria, relieving alcoholism, removing greasiness, reducing blood pressure, blood fat and blood sugar, helping digestion, treating insomnia and diarrhea and the like is formed by innovation through a reasonable ratio, a scientific process and a strict flow. In addition, the multi-effect vinegar drink product also has the characteristics of readily available materials, convenience for preparation, low cost and the like, can be widely suitable for the health care and treatment rehabilitation of the ordinary people, is wide in application range, and has a wide market application prospect and high economic and practical value.

The invention relates to a porous nitrogen-doped carbon nanofiber dispersed nickel and molybdenum phosphide photocatalyst as well as preparation and application thereof. The preparation method comprises the following steps: (1) heating and dissolving MoCl5, Ni(NO3)2.6H2O, PS and PAN in DMF to obtain a spinning solution; (2) performing electrostatic spinning on the spinning solution to obtain a carbon fiber membrane; and (3) placing the carbon fiber membrane in a tubular furnace, firstly adopting sodium hypophosphite for pre-phosphorization, and then calcining and carbonizing the component to obtain a target product. The prepared catalyst has a wide light absorption range, the capability of reducing carbon dioxide (CO2) under visible light is greatly improved, and the catalyst shows excellent selectivity of reducing CO2 into carbon monoxide (CO). Meanwhile, the photocatalyst has the advantages of low resistivity, rapid carrier transfer capability, high photon-generated carrier separation capability, low carrier recombination rate, good CO2 reduction cycle stability and the like.