459 results about "Organic dye" patented technology

The invention discloses a bio-based foam adsorption material as well as a preparation method and adsorption application thereof. The bio-based polymer is used as a foam skeleton, the adsorbent with a large specific surface area is added to further improve the foam adsorption capacity, the cross-linking agent and the reinforcing filler improve the overall strength of the foam, and the bio-based foam adsorption material with the high adsorption capacity is obtained. The bio-based foam disclosed by the invention is light in weight, controllable in hydrophilicity and hydrophobicity, and capable of separating and removing pollutants such as oil and organic dye. The foam has high adsorption capacity and good cyclic adsorption capacity, can be repeatedly used, is biodegradable, does not pollute the environment, can effectively adsorb dangerous chemicals existing in a water body, does not cause secondary pollution, and can be used for decontamination treatment of organic pollutants in industrial wastewater.

The invention discloses an application of a microporous and mesoporous metal organic framework microsphere material in organic dye and heavy metal wastewater. According to the invention, mesoporous spheres formed by self-assembly of a block copolymer are used as objects, and regular and highly dense mesoporous micron-sized particles of a self-assembled amphiphilic block copolymer (PS-b-PAA) in a selective solvent mixture are used as a template; uiO-66-NH2 and ZIF-67 micron-sized microspheres which are formed by mutual growth of metal-organic framework nanocrystals and have two pore diameters of micropores and mesopores at the same time are produced, and larger carrying capacity is obtained, so that adsorption separation is more efficiently realized. The adsorbent is respectively used for dye adsorption and heavy metal ion adsorption, and the adsorption performance and mechanism of the adsorbent are explored. The metal organic framework microspheres with both micropores and mesopores are used as an adsorbent, and a simpler, more convenient and novel method is provided for adsorption.

The invention belongs to the technical field of friction catalysis, and particularly relates to application of an aluminum oxide substrate in friction catalytic degradation of high-concentration organic dye wastewater, an aluminum oxide ceramic chip is used as a substrate, titanium dioxide nano powder is used as a catalyst, and the aluminum oxide ceramic chip is fixed at the bottom of a flat-bottom glass beaker; the method comprises the following steps: adding organic dye wastewater, a magnetic turntable and titanium dioxide nano powder into a flat-bottomed glass beaker, then putting the flat-bottomed glass beaker in a dark environment at room temperature, stirring and reacting on a magnetic stirrer for 90-150 minutes, and after the reaction is completed, completely degrading organic dye in the wastewater. According to the method, the aluminum oxide ceramic chip is added into a system for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder as the substrate, so that the degradation rate of the organic dye is greatly improved, the complete degradation time of the organic dye is shortened, and a new thought is provided for performing friction catalytic degradation on the organic dye wastewater by using the titanium dioxide nano powder.

The invention discloses application of a magnetic nano composite material as an adsorbent in removal of organic dye in water, and belongs to the technical field of application of composite materials, the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water, the adsorption capacity of Congo red (CR) reaches up to 1603.54 mg / g and 1968.83 mg / g, and the adsorption capacity of the magnetic nano composite material (one of Fe3O4-coated TAPT-OMePDA or Fe3O4-coated TAPT-TFPDA) as the adsorbent adsorbs the organic dye in water. The adsorption of the two adsorbents to the CR accords with a quasi-secondary kinetic model and a Langmuir isotherm model, and belongs to single-layer chemical adsorption. Compared with an adsorbent in the prior art, the Fe3O4 (at) TAPT-OMePDA and the Fe3O4 (at) TAPT-TFPDA have the advantages that the porosity is high, the adsorption efficiency is high, the selectivity is good, and the repeated utilization rate is good.

The present invention addresses the problem of providing: a transfer film that is used for manufacturing an optical waveguide member, and that enables formation of an EO layer having a reduced variation in thickness and exhibiting a high electro-optical constant; and a method for manufacturing an optical waveguide using the transfer film. A transfer film according to the present invention is used for manufacturing an optical waveguide member, and has a temporary support, an alignment layer, and an electro-optical layer containing an organic dye in the stated order.

The invention relates to three-dimensional modified polyvinyl alcohol hydrogel as well as a preparation method and application thereof, and relates to the technical field of evaporation materials, few layers of FLG and alpha type Bi2O3 are doped in polyvinyl alcohol hydrogel, and Ppy vapor deposition is performed on the surface of the hydrogel to obtain the three-dimensional modified polyvinyl alcohol hydrogel 3D-PVA coated Bi2O3-FLG / Ppy PEMs. After the material prepared by the method is finally optimized, the evaporation rate reaches 4.03 kg / (m < 2 >. H), meanwhile, the stable evaporation rate of 3.06 kg / (m < 2 >. H) is shown in an evaporation experiment for simulating northern sea water polluted by methylene blue dye, and the degradation effect on pollutants in evaporated water reaches 81% in an illumination experiment. The material prepared by the method not only has high evaporation rate in seawater desalination application, but also shows great potential and application prospect in treatment of seawater polluted by organic dye.

The invention discloses an optical stealth color radiation refrigeration coating as well as a preparation method and application thereof, and relates to the technical field of optical stealth materials. The coating is prepared from the following raw materials in percentage by mass: 30 to 50 percent of nano-particles wrapped by fluorescent silicon dioxide shells, 30 to 35 percent of polydimethylsiloxane, 5 to 10 percent of auxiliaries and 30 to 40 percent of ethyl acetate, wherein the sum of the mass percent of all the components is 100 percent; according to the invention, the organic fluorescent dye is doped in the mesoporous silica and is coated with the silica shell, so that not only is the fluorescence aggregation quenching effect of the organic dye avoided and the maximum fluorescence intensity of the dye improved, but also the silica shell layer at the outer layer also plays a role of a protective layer; oxidation of ultraviolet rays, solvents and oxygen to the dye is shielded, and the light stability of the dye is improved.

The invention belongs to the technical field of organic dye synthesis and application, and discloses a conjugated compound containing a benzothiophenazine structure as well as a preparation method and application thereof, and the conjugated compound containing the benzothiophenazine structure has excellent photophysical properties, singlet oxygen yield and superoxide anion generation capacity. The novel conjugated compounds ENBO-NI and ENBS-NI containing benzothiophenazine structures are successfully prepared by replacing a benzene ring of Nile blue with a cycloalkane structure and adjusting the electron donating ability of an R1 group. The two compounds have near infrared fluorescence emission, good solubility and relatively high ROS yield. Compared with a classical photosensitizer NB, the singlet oxygen yield of ENBO-NI is increased by about 117.65%, and the singlet oxygen yield of ENBS-NI is as high as 70%. The absorption wavelength of the conjugated compound is in a red light wave band. The preparation process is simple and efficient, large-scale production is easy, and the preparation method has a wide clinical application prospect.

The embodiment of the invention relates to the field of photomasks, and provides a photomask protective film frame and a preparation method thereof, the photomask protective film frame comprises a frame main body made of a metal material and a coating formed on the surface of the frame main body, and the photomask protective film frame is characterized in that the coating is at least composed of carbon black, silicon dioxide particles and organic dye. The nanoscale carbon black in the coating has a high light absorption coefficient, fills gaps of dye molecules and forms a continuous light absorption network, the organic dye enhances absorption of light with specific wavelength through a molecular structure conjugated system, and the nanoscale carbon black and the organic dye form a composite function of broad-spectrum absorption and accurate waveband adjustment, so that more than 95% of light is absorbed in a broad-waveband range, light reflection on the surface of the frame is reduced, and the light absorption efficiency is improved. Pattern distortion caused by reflected light in the photoetching process is avoided, silicon dioxide is embedded into an organic dye matrix, silicon dioxide gaps are filled with carbon black particles, the porosity of the coating is reduced, the wear resistance of the coating is improved, and the cracking risk of the coating is reduced. Optical absorption, wear resistance and weather resistance are synchronously improved.

The invention discloses an In2O3 / ZnO / BiOBr catalyst for efficiently degrading rhodamine B and a preparation method of the In2O3 / ZnO / BiOBr catalyst. The In2O3 / ZnO / BiOBr photocatalyst with a high specific surface area is prepared through a simple one-pot hydrothermal method, the degradation performance of the photocatalyst is improved through simultaneous coupling of In2O3, ZnO and BiOBr, formed double-Z-type heterojunctions are beneficial to inhibition of recombination of photon-generated carriers, and organic dye rhodamine B can be efficiently degraded through construction of the structure. And after sunlight irradiation is simulated for 40 minutes, the degradation rate of rhodamine B reaches 98.80%, and after four continuous degradation experiments, the degradation rate is not obviously attenuated. The material is simple in preparation method and excellent in degradation performance, and has a wide application prospect in the field of organic pollutant removal.

The invention discloses an MOF-loaded tobacco cellulose aerogel material as well as a preparation method and application thereof, and relates to the technical field of composite materials. Wherein the MOF-loaded tobacco cellulose aerogel material presents a loose and porous appearance, and comprises tobacco cellulose aerogel and an MOF material coated on the surface of the tobacco cellulose aerogel. According to the preparation method, the MOF material is generated on the surface of the tobacco cellulose aerogel in situ, so that a large amount of MOF material is exposed on the surface of the tobacco cellulose aerogel. Through specific adsorption of the MOF material, the effect of efficiently removing the organic dye Congo red by the MOF-loaded tobacco cellulose aerogel material is achieved.

The invention discloses a reversible regulation coordination type rare earth nanocrystal-organic dye, which comprises a rare earth nanocrystal and a cyanine dye, the cyanine dye forms reversible coordination with the rare earth nanocrystal on the surface of the rare earth nanocrystal, the cyanine dye has a structure shown as a formula I: # imgabs0 #, and R is halogen or a group # imgabs1 # * represents a bonding position. The reversible regulation coordination type rare earth nanocrystal-organic dye can be subjected to reversible coordination, the structure of the organic dye is not damaged, continuous detection can be performed, the detection sensitivity is relatively high, and the anti-interference capability is strong. The invention also discloses a preparation method of the reversible regulation coordination type rare earth nanocrystal-organic dye, a luminescent probe, application of the luminescent probe in biological detection, and a method for detecting the pH value of gastric juice by using the luminescent probe.

The invention belongs to the technical field of near-infrared organic dye synthesis, and particularly discloses a cyanine dye with J aggregation characteristic, J aggregation nanoparticles, and preparation methods and applications of the cyanine dye and the J aggregation nanoparticles. The cyanine dye is 1-ethyl-2-(2-(2-(-3-(2-(1-ethyl-3, 3-dimethyl-1, 3-dihydro-2H-benzo [g] indole-2-subunit) ethylidene)-2-(2, 2, 2-trifluoro-N-(2-methylbenzyl) acetamide) cyclopent-1-ene-1-yl) vinyl)-3, 3-dimethyl-3H-benzo [g] indoleiodised salt, and the structural formula of the cyanine dye is shown in the description. The preparation method is simple, the J aggregation nanoparticles can be prepared by utilizing the unique property of J aggregation, the J aggregation nanoparticles have high light stability and have strong fluorescence emission in a near-infrared second region, and the material prepared by the invention can be used as a contrast agent and is applied to the field of near-infrared second region fluorescence imaging.

The invention provides a dye / ion separation membrane with pore diameter and charge coordinated regulation and control as well as a preparation method and application thereof, and belongs to the field of preparation of a double-layer ionic covalent organic framework (COFs) composite membrane. An aromatic polyamide ultrafiltration membrane is used as a base membrane, and a double-layer COFs membrane is constructed on the surface of the aromatic polyamide ultrafiltration membrane through a multi-time interfacial polymerization method. The first layer is a positive charge COFs layer formed by reacting a guanidyl monomer with 1, 3, 5-triformyl phloroglucinol (Tp); and the second layer is a negative charge COFs layer formed by reacting ionic aromatic diamine with Tp. By adjusting the type and concentration of the monomers, the pore diameter and charge distribution of the film layer can be synergistically regulated and controlled, and the double-layer composite film which is stable in structure and orderly stacked is constructed. The obtained membrane has molecular sieve separation and electrostatic regulation functions, can efficiently intercept organic dye molecules in high-salt printing and dyeing wastewater, and has high flux, high selectivity and good chemical stability.

The invention discloses an asymmetric magnetic mesoporous carbon superstructure material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing Fe3O4amp; a SiO2 alcohol dispersion liquid; (2) preparing Fe3O4 < 4 > amp; the preparation method comprises the following steps: preparing a SiO2 (at) micro single micelle superstructure alcohol solution; (3) preparing Fe3O4 < 4 > amp; a SiO2 (at) C superstructure material; the specific surface area of the material is 87-116 m < 2 > / g, the aperture is 22.8-50 nm, and the length is 330-400 nm. The material is applied to catalytic degradation of organic dyes. The method has the beneficial effects that the surface chemical property is more active, the hydrophilicity and the catalytic degradation capability are stronger, the method is suitable for chemical catalytic degradation, the whole synthesis process is simple and convenient to operate, and intermediate byproducts cannot be generated to cause secondary pollution; in addition, in the dopamine carbonization process, high-temperature carbonization is carried out in nitrogen (inert atmosphere), and the operation is safe; by adjusting the type of the PS-PVP-PEO single micelle, accurate control of the mesoporous size can be realized, so that the PS-PVP-PEO single micelle is suitable for catalytic degradation of organic pollutants with different molecular weights, and selective catalytic degradation is realized.

The invention discloses a method for preparing nano-copper particles from eucommia ulmoides extract and application of the nano-copper particles in a catalytic reduction reaction in the technical field of metal nano-materials, the eucommia ulmoides extract is adopted as a reducing agent, a bivalent copper salt solution is added, a reaction can be carried out in a water phase, and the nano-copper particles are generated. The raw materials are cheap and easy to obtain, the reaction conditions are easy to control, the process is simple, and the prepared nano-copper particles have good dispersity and show a good catalytic effect in the aspect of catalytic reduction of organic dye and nitrophenol.

The invention provides a pyrite-coated WS2 heterogeneous Fenton composite catalyst as well as a preparation method and application thereof, and belongs to the technical field of organic dye sewage treatment. The method comprises the following steps: carrying out mechanochemical ball milling on nano WS2 and pretreated pyrite to prepare pyrite coated WS2; wherein the mechanochemical ball milling technology can improve the industrial wastewater treatment efficiency and reduce secondary pollution. By controlling the contrast, pollutant concentration and pH value of the catalyst, the prepared composite catalyst shows excellent catalytic activity and stability. The invention provides an effective strategy for solving the self-repairing and recycling problems of the traditional Fenton catalyst in practical application, is expected to be widely applied to the field of industrial wastewater treatment, and promotes the development of an environment treatment technology.

The invention relates to the technical field of organic dyes, in particular to a novel xanthene dye for blue photoresist color paste and a synthesis method of the novel xanthene dye. The invention relates to a synthesis method of a novel xanthene dye for blue photoresist color paste, which comprises the following steps: 1) taking rigid cyclic amine as a nucleophilic reagent, and carrying out aromatic nucleophilic substitution reaction on a chlorinated xanthene compound to obtain a xanthene intermediate; 2) performing chlorination reaction on the xanthene intermediate by using a chlorination reagent to obtain a chlorinated xanthene intermediate; 3) mixing active amine and the chlorinated xanthene intermediate, and performing substitution reaction under the action of alkali to obtain the novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste.The novel xanthene dye for the blue photoresist color paste has the advantages of being high in solubility, good in thermal stability and high in contrast ratio.

To provide an optical filter advantageous for exhibiting desired transmissivity characteristics even without comprising a near infrared ray reflection film.SOLUTION: An optical filter 1a comprises a first light absorber 11 and a second light absorber 12. The first light absorber 11 contains an organic dye. The second light absorber 12 contains a copper component, and absorbs at least part of infrared rays. The optical filter exhibits a first transmission spectrum satisfying the following conditions: (I) an average value TA450-600 of a transmissivity in a wavelength range of 450 nm to 600 nm is 76% or more; (II) a first cutoff wavelength λF falls in a range of 360 nm to 450 nm; (III) a second cutoff wavelength λS falls in a range of 600 nm to 700 nm; and (IV) a maximum value TM700-750 of a transmissivity in a wavelength range of 700 nm to 750 nm is 5% or less.SELECTED DRAWING: Figure 1

The present invention belongs to the technical field of sewage treatment, and specifically relates to a sewage treatment catalyst prepared from biomass waste and its application. The present invention uses furfural or xylose production waste residue as a preparation raw material, and obtains nitrogen-doped activated carbon with rich structural defects through steps such as washing, carbonization, and activation. It can be used to catalyze the advanced oxidation of persulfate to treat phenol wastewater and organic dye wastewater, and can also be used as a carrier to introduce metal elements through conventional catalyst preparation processes such as physical mixing, coprecipitation, and impregnation, so that it has new catalytic properties. The preparation process of the present invention has the advantages of being environmentally friendly and is particularly suitable for sewage treatment with a high organic content. The method provided by the present invention has the advantages of environmentally friendly raw material sources, high organic pollutant degradation rate, and simple preparation process, and is particularly suitable for industrial application. The preparation method of the catalyst of the present invention is simple and low-cost, and the prepared catalyst is not only environmentally friendly but also has a long service life.

The invention belongs to the technical field of organic dyes, and particularly discloses a high-dispersity phthalocyanine pigment and a preparation method thereof. The preparation method of the phthalocyanine pigment comprises the following steps: (1) ultrasonically dispersing a silane coupling agent and graphene oxide in a solvent to prepare modified graphene oxide; and (2) dispersing the modified graphene oxide, polyethylene glycol and a copper phthalocyanine pigment in an organic solvent, and carrying out a heating reaction to obtain the high-dispersity phthalocyanine pigment. Organophilic groups in the long straight carbon chain silane coupling agent can be physically wound with copper phthalocyanine organic molecules, so that the graphene oxide is bonded with an interface of the copper phthalocyanine pigment, and the capability of dispersing the copper phthalocyanine pigment by the graphene oxide is greatly improved. The molecular structure of the polyethylene glycol has a plurality of oxygen-containing anchoring functional groups, so that the defects of the modified graphene oxide dispersing agent can be made up, the spatial repulsive force among copper phthalocyanine pigment particles is enhanced, and the dispersion stability of the copper phthalocyanine pigment is enhanced.

The invention belongs to the technical field of piezoelectric catalytic materials, and particularly relates to a piezoelectric catalytic material based on a wood porous structure and a preparation method of the piezoelectric catalytic material. The invention provides a piezoelectric catalytic material based on a wood porous structure. The piezoelectric catalytic material comprises wood with a porous structure, molybdenum disulfide and reduced graphene oxide, wherein the molybdenum disulfide and the reduced graphene oxide are loaded on the porous structure. Molybdenum disulfide, reduced graphene oxide, rGO and MoS2 are loaded on the porous wood to form a nano heterojunction, so that the porous wood has the characteristics of good conductivity and high carrier separation efficiency, carriers (electrons and holes) generated by MoS2 in the piezoelectric process can be effectively captured and transmitted, the piezoelectric catalytic performance of the porous wood is improved, and the preparation method is simple and easy to implement. Under normal-temperature and ultrasonic conditions, the composite material has relatively high degradation efficiency on organic dyes (methylene blue and rhodamine B), and has relatively high cyclic utilization rate.

The invention discloses a colored aluminum pigment and a preparation method and application thereof.The colored aluminum pigment comprises aluminum paste, a first polymer resin layer, an organic dye layer and a second polymer resin layer, the surface of the aluminum paste is coated with the first polymer resin layer, and the surface of the first polymer resin layer is subjected to acid group modification; the colored aluminum pigment is prepared by the following preparation method: preparing aluminum powder coated with a first polymer resin layer; performing surface modification on the aluminum powder coated with the first polymer resin layer to obtain surface modified aluminum powder; performing air impact coating on organic dye and the surface modified aluminum powder to obtain a colored aluminum pigment substrate; and coating a second polymer resin layer on the surface of the colored aluminum pigment substrate. The aluminum pigment is subjected to multi-layer coating, organic dye and the surface modified aluminum powder are subjected to air impact coating, and the aluminum pigment has excellent aging resistance, is bright in color and is not prone to falling off.

The present invention discloses a magnetic yak hair-based biomass activated carbon, as well as its preparation method and application. The magnetic yak hair-based activated carbon is prepared by a two-step process of mixing Fenton iron mud with yak hair activated carbon, based on the carbonization and activation of yak hair. The activated carbon has a maximum specific surface area of ​​2632 m² / g and can be separated from a solution using magnetism. It can be used for the efficient adsorption of water pollutants such as organic dyes and antibiotics.

The invention provides a fluorescence sensor 4-MU (at) ZIF-8 (at) PLA-PEG as well as a preparation method and application thereof, and belongs to the technical field of visual food safety monitoring materials. The fluorescence sensor comprises a zeolite imidazate framework ZIF-8, an organic dye molecule 4-MU and a polymeric macromolecule PLA-PEG (Polylactic Acid-Polyethylene Glycol), the organic dye molecule 4-MU is coated with the zeolite imidazate framework ZIF-8 to form 4-MU (ZIF-8 nano particles with a core-shell structure, and the 4-MU (ZIF-8 nano particles with the core-shell structure are doped into a polymeric macromolecule PLA-PEG (Polylactic Acid-Polyethylene Glycol). The ZIF-8, 4-MU and PLA-PEG in the fluorescence sensor provided by the invention can cooperate with each other, can visually detect TCs with high response speed and low detection limit, and has certain mechanical properties and antibacterial properties, thereby providing a new thought for the field of intelligent packaging for detecting TCs in food at present.

The invention relates to the related technical field of costume fabrics, in particular to a high-antibacterial anti-sunshine costume fabric not prone to fading and a preparation technology, the high-antibacterial anti-sunshine costume fabric comprises a base fiber layer, and an antibacterial finishing layer, an anti-ultraviolet layer and a color fastness enhancing layer are arranged on the base fiber layer. According to the high-antibacterial anti-sunshine clothing fabric not prone to fading and the preparation process, a nano-silver and chitosan composite system is adopted, nano-silver releases silver ions to destroy the physiological structure of bacteria, chitosan inhibits the activity of the bacteria through the amino effect, the nano-silver and the chitosan cooperate with each other, the antibacterial effect of clothing is improved, nano-zinc oxide and titanium dioxide composite sol improve the antibacterial effect of the clothing, and the antibacterial effect of the clothing is improved. Through multiple mechanisms of reflecting, scattering and absorbing ultraviolet rays, broadband protection is formed, the ultraviolet rays can be effectively blocked, the high-grade sunscreen requirement is met, the skin is protected from being damaged by the ultraviolet rays, the sulfonic-group-containing organic dye fixing agent, dye molecules and fibers form chemical bond combination, a stable color fixing network is constructed, and the appearance color and luster are kept lasting.

The NH2-UiO-66 (at) BTT-BPDA core-shell material is characterized in that NH2-UiO-66 is used as a core, and BTT-BPDA is used as a shell; the preparation method comprises the following steps: uniformly mixing zirconium tetroxide / 2-aminoterephthalic acid, DMF (Dimethyl Formamide) and acetic acid, heating, washing a solid product by using a mixed solution of methanol and DMF after heating, and drying to obtain NH2-UiO-66; the preparation method comprises the following steps: uniformly mixing NH2-UiO-66, benzotrithiophene tricarboxaldehyde and dioxane, heating, and washing a solid product by using tetrahydrofuran after heating, so as to obtain aldehyde NH2-UiO-66; the preparation method comprises the following steps: dissolving hydroformylated NH2-UiO-66, benzotrithiophene tricarboxaldehyde and (2, 2 '-bipyridyl)-5, 5'-diamine into a glass bottle filled with dioxane and glacial acetic acid; heating the glass bottle to obtain a brown product; and centrifuging the brown product, and washing the solid product with anhydrous tetrahydrofuran to obtain the NH2-UiO-66 (at) BTT-BPDA core-shell material. The NH2-UiO-66 (at) BTT-BPDA core-shell material is used for adsorbing harmful substances in industrial wastewater. The core-shell material prepared by the method is connected through dynamic carbon-nitrogen covalent bonds, has good structural stability, is rich in high-density benzene rings and pyridine rings, and has the advantages of high adsorption capacity, high adsorption rate, good selectivity, easy regeneration and the like on iodine and organic dyes.

A three-dimensional printing kit can include a polymeric build material including from about (80) wt % to (100) wt % polymer particles having an average particle size from about (10) μm to about (150) μm, and can also include a fusing agent including an aqueous liquid vehicle and from about (2) wt % to about (20) wt % of a mixture of organic dye radiation absorbers. The mixture of organic dye radiation absorbers can include a charged yellow water-soluble organic dye and a cyan water-soluble organic dye. The mixture of the organic dye radiation absorbers can be from about (1) wt % to about (40) wt % soluble in water.

The invention discloses a layered nano-porous copper loaded cuprous oxide / copper oxide nanowire composite material as well as a preparation method and application thereof. The material is a thin strip and comprises an amorphous substrate thin strip, multiple layers of nano-porous copper covering an amorphous substrate and a cuprous oxide / copper oxide two-component heterojunction nanowire loaded on the surface of the nano-porous copper. The preparation method comprises the following steps: firstly, freely dealloying an amorphous ribbon, and adding PVP (Polyvinyl Pyrrolidone) into dealloying corrosive liquid to generate layered nano-porous copper; then, copper hydroxide nanowires grow on the surface of each layer of nano-porous copper in situ through the anodic oxidation technology; and finally, converting the copper hydroxide into cuprous oxide / copper oxide nanowires with different component proportions by regulating and controlling the temperature by adopting a heat treatment process. The prepared composite material has a larger specific surface area and more active sites, and has unique structure and performance advantages in the field of photocatalytic degradation of organic dyes.

The application relates to the field of graphene preparation, and particularly provides a method for preparing reduced graphene oxide (rGO) by visible light in an aqueous solution, which uses an LED lamp simulating the visible light section of sunlight as a light source under normal temperature and pressure, and reduces industrial-grade graphene oxide (GO) to prepare rGO in a homogeneous aqueous solution system in the presence of an organic dye molecule eosin Y (water-soluble) as a photosensitizer and triethylamine as an electron sacrificial agent. The method overcomes the shortcomings of a low yield, the need for a strong reducing agent and high pollution in a traditional preparation process, and has the advantages of simple process, easy separation, high yield, low energy consumption, low cost and no pollution, and the prepared rGO has a smooth structure, a thin thickness and a perfect graphitization degree.