64results about How to "Easy to synthesize in large quantities" patented technology

The invention relates to a fluorescent sensing material with sensing function to phenyl amine compounds, the method and the application thereof. The invention is characterized in that: Aryl is connected with pyridyl to form fluorescent sensing material, the fluorescent sensing material comprises line type, star type and dendritic aryl pyridine; the number of the pyridine units is a positive integer from 1 to 150. The preparation method comprise two steps: synthesizing aryl boric acid or boron ester compound and synthesizing aryl pyridine compound. The fluorescent sensing material provided in the invention is used to detect phenyl amine compounds.

The invention relates to a hydrothermal preparation method of a TiO2-rGO composite photochemical catalyst, sequentially comprising the following steps of: dispersing pretreated TiO2 into 10mL of graphene oxide solution prepared by step 2), and evenly stirring, so as to obtain stable TiO2-GO suspending liquid; and carrying out hydrothermal treatment under the temperature of 100-200DEG C for 0.5-10 hours, washing a product by three times, and carrying out vacuum drying, so as to obtain the TiO2-rGO composite photochemical catalyst. The hydrothermal preparation method has the benefit effects of taking purified water as a solvent, being simple to operate, and free from adding various reducing agents such as an organic surface active agent and an additive, thereby being a green and environment-friendly graphene oxide reduction method. The photoproduction-electron hole effective separation efficiency can be improved due to the high electronic mobility of reduced graphene, so that the photocatalysed performance of the TiO2 can be improved, and the hydrothermal preparation method has the advantages of being very simple to operate, low in equipment requirement, free from expressive reaction devices, easy to synthesize on a large scale, etc.

The invention relates to a visible light photosensitization preparation method of TiO2-rGO compound light catalyst. The method comprises the following steps of: 1) thermally treating the commercial P25 TiO2 at high temperature; 2) ultrasonically dispersing an grapheme oxide in a de-ionized water to form an uniform solution; 3) mixing the Rhodamine B solution with the GO solution to form the uniform solution; 4) dispersing 1g of TiO2 nano particle in the uniform solution of the GO and Rhodamine B, and stirring uniformly; 5) irradiating the suspension liquid for 10-300 minutes in the presence of N2 by using the visible light, washing and drying the obtained product to obtain the TiO2-rGO compound light catalyst. The method provided by the invention has the advantages of environmental conservation and environmental friendliness without adding any organic additive as the reducing agent; meanwhile, the operation is simple, the device requirement is low, and the industrial production is easy to realize; and the prepared compound light catalyst has high photocatalysis, and the good social and economic benefit can be produced.

The invention discloses water-soluble perylene imide compounds, a usage as a DNA intercalator, and applications thereof in the growth inhibition of cancer cells, and belongs to the technical field of chemical synthesis of biological drugs. Through inducing cation amino functional groups into perylene anhydride derivatives and a perylene mono-anhydride system, the water solubility of the perylene anhydride derivatives and the perylene mono-anhydride system is greatly improved; furthermore, the cation amino functional groups are in a photo-stability combination with perylene derivatives, and thus a series of novel water-soluble perylene imide compounds are obtained. The synthesized water-soluble perylene imide compounds can effectively be embedded between the base pairs of DNA double helix of nucleus and be used as a DNA intercalator. The synthesized water-soluble perylene imide compounds have a planar rigid structure, so that the compounds can be specifically enriched around fixed tissue cell nucleus, the compounds have the advantages of strong fluorescence and easiness in fluorescent imaging, and have a similar effect as the DAPI effect of commercial cell nucleus dye. The synthesized water-soluble perylene imide compounds can effectively inhibit the growth of cancer cells such as U2OS, HTC116, Hela, AGS, etc., and have a very prominent anti-tumor effect.

The invention relates to the technical field of electromagnetic wave absorption, in particular to a yolk shell hollow ferroferric oxide@air@carbon nano composite wave-absorbing material and a preparation method thereof, and the preparation method comprises the following steps: (1) coating SiO2 on the surfaces of hollow ferroferric oxide nano particles; (2) carrying out carboxylation modification on the surface; (3) growing MIL-100 (Fe) on the surface in situ; (4) carrying out high-temperature calcination in a nitrogen atmosphere; and (5) heating and stirring in alkali liquor to remove the SiO2 layer, washing and drying to obtain the yolk shell hollow ferroferric oxide@air@ nano composite wave-absorbing material. The preparation method disclosed by the invention is low in cost, green and safe, free from any toxic and harmful substances, free from secondary pollution and easy for large-scale synthesis, and has an industrialization prospect. The yolk shell hollow ferroferric oxide@air@carbon nano composite wave-absorbing material prepared by the preparation method has the characteristics of small thickness, light weight, low filling ratio, strong absorption, wide frequency band and easiness in regulation and control of wave-absorbing performance, and has a wide application prospect.

The invention discloses a polyimide material as well as a preparation method and application thereof. The polyimide material is generated by taking N, N-dimethylformamide, N-methylpyrrolidone and thelike as solvents and reacting anhydrides such as 1, 4, 5, 8-naphthalenetetracarboxylic dianhydride, pyromellitic dianhydride and 1, 2, 4, 5-cyclohexane tetracarboxylic dianhydride with urea. The polyimide material shows relatively high specific capacity and stable cycle index in an aqueous lithium ion half battery. In the future, the material can be matched with more mature positive electrode materials to construct a high-energy-density aqueous lithium ion total battery.

The invention relates to an in-situ transformation preparation method of an efficient C3N4-CdS composite photocatalytic material. The in-situ transformation preparation method comprises the following steps that (1) tripolycyanamide is dispersed in deionized water to form a uniform solution; (2) cadmium sulfide powder is uniformly dispersed in the tripolycyanamide solution uniformly, the cadmium sulfide powder and the tripolycyanamide solution mixed fully to achieve that tripolycyanamide is uniformly absorbed on the surface of the cadmium sulfide powder; (3) liquid obtained in Step 2 is transferred to a blast drying oven to be dried, and tripolycyanamide modified cadmium sulfide powder is obtained; and (4) the tripolycyanamide modified cadmium sulfide powder is put in a tube furnace and calcined, and the efficient C3N4-CdS composite photocatalytic material is obtained. The in-situ transformation preparation method has the benefits of being simple efficient and green when being used for synthesizing the photocatalytic material with the surface uniformly loaded with C3N4-CdS; interface transmission and sharp separation of photon-generated carriers are further facilitated; and the photocatalysis performance is further improved. In addition, the synthetic method is simple to operate, and requirements on equipment are low.

The invention provides a preparation method of graphite-phase carbon nitride solid fluorescent powder and application thereof in quickly developing latent fingerprints on different object surfaces. The graphite-phase carbon nitride solid fluorescent powder can be used for fluorescence labeling, and can be used in the fields of crime scene criminal detection and the like. The invention aims to quickly develop latent fingerprints on different individual and different object surfaces by utilizing the characteristic of photoluminescence of the nano graphite-phase carbon nitride. The high-fluorescence-responsivity graphite-phase carbon nitride solid fluorescent powder is prepared by using melamine as an N-containing precursor and using sodium chloride and potassium chloride as assistants. The application process in fingerprints comprises the following steps: lightly dipping a fingerprint brush into a small amount of graphite-phase carbon nitride solid fluorescent powder, lightly brushing the suspected fingerprint region, removing the excess powder, putting under a 365nm ultraviolet lamp, and observing the special blue light which is conveniently photographed and stored by a digital camera. Due to the specific adsorptivity of the nano material, the affinity between the nano powder and fingerprint ridges is high. The graphite-phase carbon nitride solid fluorescent powder can be used for successfully extracting fingerprints on different individual and different object surfaces.

The invention discloses a method for improving the luminescent property of an aluminate long-lasting phosphor material. The method comprises the following steps: firstly, coating the surface of SrAl2O4: Eu<2+>, Dy3<+> luminescent powder with a layer of SiO2 by adopting a sol-gel method, then adsorbing a layer of silver particles on the surface to obtain a surface silver-loaded SiO2-coated SrAl2O4:Eu<2+>, Dy<3+> long-lasting phosphor material. The method improves the long-lasting phosphor luminescent property and is simple in synthesis process and convenient for industrial large-scale production, and the prepared material is relatively high in long-lasting phosphor luminescent property and expected to produce good social and economic benefits.

The invention discloses a polymerizable lignin-based macromolecular photoinitiator, a preparation method and applications thereof, wherein the structure formula of the polymerizable lignin-based macromolecular photoinitiator is represented by the following formula I, wherein the group defined in the specification is a terminal-hydroxyl-free molecular skeleton of lignin, M1 is a terminal-hydroxyl-free and halogen-atom-free molecular skeleton after epoxy haloalkane is subjected to an epoxy ring-opening reaction, M2 is an acyl-chloride-free and double-bond-free molecular skeleton of a solubilizing compound, M3 is a hydroxyl-free molecular skeleton of a cracking type photoinitiator, n1 and n3 are natural numbers of greater than or equal to 1, n2 is an integer of greater than or equal to 0, andthe sum of n1, n2 and n3 is the number of the terminal hydroxyl groups of lignin. The invention also discloses a preparation method and applications of the photoinitiator. The photoinitiator disclosed by the invention has characteristics of good ester solubility, good polymerizability, high photo-initiation activity, good thermal stability, good storage performance, low viscosity, low mobility, low toxicity and no volatilization.

The invention relates to a preparation method for a high-efficiency amorphous ZnO/AgCl composite visible light photocatalyst. The method comprises the following steps: (1) reacting a AgNO3 solution and a KCl solution to obtain a AgCl powder body as a photocatalyst raw material; (2) dissolving zinc nitrate in deionized water to obtain a uniform zinc nitrate solution, and dissolving urea in the deionized water to obtain a uniform urea solution; (3) adding the AgCl powder body into the zinc nitrate solution and the urea solution, soaking and stirring to obtain a product; (4) filtering the product, washing by the deionized water, adding a methyl orange solution, and radiating in visible light; and (5) filtering a precipitate obtained in the step (4), washing by the deionized water, and drying under a vacuum condition so as to obtain the high-efficiency amorphous ZnO/AgCl composite visible light photocatalyst. The method has the beneficial effects that the operation is easy, and needed raw materials are green and easily available; a prepared photocatalytic material has the high-efficiency visible light photocatalytic performance, and can be used for effectively degrading organic pollutants.

The invention relates to a method for selectively modifying the {110} surface of bismuth vanadate with a NiOOH assistant. The method comprises the following steps: 1) preparing an electrolyte solution; 2) adjusting the pH value of the electrolyte solution prepared in step 1) to 2-12; 3) mixing the solution obtained in step 2) with a Pt/BiVO4 powder to form a uniform suspension; 4) adding a water-soluble nickel salt to the suspension obtained in step 3); 5) uniformly stirring the suspension in step 4) at room temperature, and illuminating the suspension for a certain period of time; and 6) filtering, washing and drying a precipitate obtained in step 5) to obtain a photocatalyst selectively modified with the NiOOH assistant. The synthesis method has the advantages of simplicity in operation,greenness, environmental protection, energy saving, and no need to add various organic surfactants, and the nickel oxyhydroxide has the advantages of wide sources of raw materials, low price, no toxicity, no pollution and stable chemical properties.