77results about How to "Improve photostability" patented technology

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

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 discloses selenium disulfide shampoo with a good suspension effect and a preparation method of the selenium disulfide shampoo. The selenium disulfide shampoo comprises the following raw materials in percentage by weight: 0.05-1% of selenium disulfide particles; 0.2-6% of a high-molecular polymer capable of suspending selenium disulfide particles; 0.5 to 5% of a polyol; and 0.05%-0.1% of a chelating agent. The selenium disulfide shampoo has the advantage of being good in suspension effect, and the problems that in the using process of existing selenium disulfide shampoo, due to the fact that the dispersion uniformity and suspension stability of selenium disulfide in the shampoo are poor, the selenium disulfide is likely to be precipitated in a shampoo container, the concentration of the selenium disulfide before and after use is different, and the selenium disulfide cannot be precipitated in the shampoo container are solved. The treatment effect of the selenium disulfide shampoo on a patient is influenced.

The invention relates to the technical field of textile materials, and particularly discloses high-strength screen cloth and a preparation method thereof. The high-strength screen cloth is prepared from the following raw materials: caprolactam, p-phenylenediamine, adipic acid, diphenyldicarboxylic acid, a modified monomer, zinc diethyl hypophosphite, divinyl benzene, modified glass fibers, an antioxidant and a lubricant. The preparation method comprises the following steps: preliminarily polymerizing caprolactam, p-phenylenediamine, adipic acid, biphenyldicarboxylic acid and the modified monomer, then adding the modified glass fiber, zinc diethyl hypophosphite and divinyl benzene for continuous reaction to obtain a polyamide copolymer, and finally performing melt spinning and weaving on the polyamide copolymer, the antioxidant and the lubricant to obtain the required high-strength mesh cloth. The high-strength screen cloth prepared by the invention has excellent mechanical properties and aging resistance, is suitable for being applied to the fields with high-performance requirements, such as constructional engineering materials and special protective equipment, and is high in practicability and wide in application prospect.

The invention provides a preparation method and application of a double-response type controlled-release pesticide. The method comprises the following steps: S1, preparing modified biochar; s2, preparing a drug carrier by using the modified biochar; and S3, preparing the double-response controlled-release pesticide by using the drug carrier. The problems that an existing controlled-release pesticide cannot meet the controlled-release function easily, the preparation process is complex, and large-scale preparation is difficult are solved.

The invention discloses a method for improving color and stability of anthocyanin through combination with punicalagin. The method comprises the step that punicalagin and anthocyanin are subjected to an intermolecular co-pigmentation reaction. According to the invention, punicalagin is adopted as a co-pigment molecule and is subjected to a co-pigmentation reaction with anthocyanin to form a punicalagin and anthocyanin compound, so that the color attribute of the anthocyanin is remarkably enhanced, and an anthocyanin solution presents brighter red color; the punicalagin and anthocyanin compound is prepared from punicalagin and anthocyanin, the heat stability, the light stability, the pH stability and the storage stability of anthocyanin are improved, the heat stability, the light stability and the storage stability of anthocyanin are further improved when the punicalagin and anthocyanin compound is prepared into microcapsules, and the punicalagin and anthocyanin compound has the advantages of being simple in process and low in cost. According to the invention, the utilization value of the anthocyanin is obviously improved, and a new thought is provided for the application of the anthocyanin in the food industry.

The invention belongs to the technical field of biodegradable mulching films, particularly relates to a biodegradable mulching film and a preparation method thereof, and provides the following scheme aiming at the problem that the existing biodegradable mulching film material is poor in tensile strength due to the physical and chemical properties of the existing biodegradable mulching film material, so that the agricultural machinery operation requirement cannot be met. The invention discloses a degradable plastic film which is prepared from the following raw materials in parts by weight: 20-35 parts of starch, 5-15 parts of cellulose, 5-15 parts of chitosan and 10-30 parts of polylactic acid. The degradable plastic film is prepared from the following components in parts by weight: starch, cellulose, chitosan, polylactic acid, poly (butylene adipate-co-terephthalate), polymethyl ethylene carbonate, polyhydroxyalkanoate, a polyethylene cross-linking agent, ammonium stearate and calcium carbonate. By using the humus concentrated solution, the light stabilizer, the antifogging agent, the antistatic agent, the compatilizer, the polyethylene wax, the phenyl salicylate, the talcum powder, the mica powder and the kaolin, the tensile strength and the stability of the mulching film are effectively improved, so that the agricultural machinery operation requirements can be met.

The invention discloses a polyvinyl chloride plastic material and a preparation method thereof, and the polyvinyl chloride plastic material comprises the following components by weight: 100 parts of a polyvinyl chloride matrix; 5 to 10 parts of light response type nano particles with # imgabs 0 # as a core and # imgabs 1 # as a shell; 2-8 parts of a halogen ion carrier type mesoporous material; 1-5 parts of a halogen free radical trapping agent; and 1-3 parts of a layered barrier material. According to the technical scheme, the technical problems that in the prior art, a polyvinyl chloride material is prone to light aging in a marine environment, and micro-plastic pollution is generated are solved.

The invention discloses a tetraarylethene modified rhodamine-like derivative as well as a preparation method and application thereof. The rhodamine-like derivative has a structure as shown in a formula I, rhodamine is taken as a core skeleton, a tetraarylethene (TAE) structure with AIE characteristics is introduced into a meso site of the rhodamine, RL-TAE series molecules are obtained, the defect of aggregation-induced quenching (ACQ) is greatly improved through the strategy, the molar absorption coefficient is obviously increased, and the rhodamine-like derivative has a good application prospect. Therefore, a new scheme is provided for developing high-brightness aggregation-induced emission dye. The rhodamine-like derivative disclosed by the invention is simple in preparation method, mild in reaction condition and high in yield, has the characteristics of AIE effect, high molar absorption coefficient and brightness, photobleaching resistance and diamagnetism, is an excellent concentration-brightness correspondence dye, and can realize efficient coding application.

The invention discloses a method for rapid broad-spectrum detection of salmonella, and relates to the technical field of bacterial detection. Comprising the following steps: (1) preparing a labeled SERS probe; (2) preparing a Fe3O4 (at) Au (at) Ag magnetic composite material; (3) combining Fe3O4 (at) Au (at) AgNPs with Ag (at) 4MBA (at) AuNPs to construct an aptamer sensor; and (4) carrying out SERS detection on the salmonella. According to the novel surface enhanced Raman scattering (SERS) aptamer sensor constructed on the basis of noble metal nanoparticles and a magnetic composite material, according to the inverse proportion relation that the higher the salmonella concentration is, the weaker the Raman signal is generated according to the principle of a competition law, the ultrasensitive rapid field detection is carried out on different salmonella.

The invention discloses a high-performance photochromic composite fabric and a preparation process thereof, and relates to the technical field of photochromic composite fabrics, the high-performance photochromic composite fabric is composed of a longitudinal fiber layer, a waterproof layer, combed cotton, cool fibers and a photochromic fiber layer; the longitudinal fiber layer is formed by interweaving chinlon and spandex, a waterproof layer is sprayed on the top of the longitudinal fiber layer, a photochromic fiber layer is connected to the top of the waterproof layer in a hot-pressing mode, combed cotton is connected to the bottom of the longitudinal fiber layer in a knitted mode, and cool fibers are connected to the bottom of the combed cotton in a knitted mode; and the surface of the photochromic fiber layer is coated with an ultraviolet light absorber. According to the photochromic composite fabric, the ultraviolet light absorber is sprayed on the surface of the photochromic composite fabric to fill gaps among the photochromic fiber layers, so that the number of ultraviolet rays reaching the photochromic material is reduced in the subsequent use process, the damage degree of the photochromic material due to photodegradation is reduced, and the service life of the fabric is prolonged.

The invention discloses a preparation method of a cement-based artificial lawn blanket, and belongs to the technical field of greening engineering. According to the preparation method, the cement-based artificial lawn blanket comprises three-dimensional mesh cloth, simulated green plants, a cement-based composite material and a packaging layer; the simulated green plant comprises a green leaf part and a grass root part; the preparation method comprises the following steps: S01, preparing the three-dimensional mesh cloth; s02, preparing simulated green plants from low-density polyethylene flame retardant resin, and arranging the simulated green plants in the three-dimensional mesh cloth; s03, pouring a cement-based composite material into the three-dimensional mesh cloth; s04, spraying a packaging layer on the bottom of the three-dimensional mesh cloth; wherein in the step S02, linear low-density polyethylene is used as a matrix for preparing the low-density polyethylene flame retardant resin, and the low-density polyethylene flame retardant resin comprises a composite flame-retardant material composed of an electrodeless flame-retardant material and an organic flame-retardant material. According to the cement-based artificial lawn carpet obtained through the preparation method of the cement-based artificial lawn carpet, simulated green plants are good in flame retardance, and the outdoor color is stable.

The invention discloses a self-assembled monomolecule taking spirofluorene as a conjugated bridge and a preparation method and application thereof, and relates to the field of solar cells, the self-assembled monomolecule takes carbazole and derivative groups thereof as functional groups, takes phosphoric acid as an anchoring group, and improves the light stability of a material and optimizes the energy level of the material by adjusting the spirofluorene conjugated bridge, so that the self-assembled monomolecule can be used for preparing the solar cell. And molecular arrangement is improved. On the premise of ensuring good light stability, the extraction and separation efficiency of current carriers is effectively improved. The technology has the characteristics of simple synthesis process and high cost benefit. When the material is applied to a perovskite solar cell, the photoelectric conversion efficiency of more than 24% can be realized, and the material has huge potential in the aspect of commercial application.

The invention provides an aza [3.2. 1] bridged ring substituted fluorescent dye as well as a preparation method and application of the aza [3.2. 1] bridged ring substituted fluorescent dye. According to the fluorescent dye, an aza [3.2. 1] bridge ring is adopted as a substituent group of the fluorescent dye, so that the brightness and the light stability of the fluorescent dye are remarkably improved, the light blue shift phenomenon generated after the dye is illuminated for a long time is thoroughly avoided, meanwhile, the water solubility of the fluorescent dye can be effectively improved, and good cell membrane permeability of the fluorescent dye can be kept. The invention also provides an embodiment of the functionalized derivative of the dye for single-molecule imaging, confocal imaging and super-resolution imaging in a biological sample.

The invention discloses mycophenolate mofetil micro powder and a preparation method and application thereof, and belongs to the technical field of pharmaceutical preparations, the mycophenolate mofetil micro powder comprises mycophenolate mofetil pill cores and a coating film; the particle size of the mycophenolate mofetil pellet core is 50-250 [mu] m, and the mycophenolate mofetil pellet core is prepared from mycophenolate mofetil, a medicinal diluent and an adhesive according to the mass ratio of 1: (0-3): (0.01-0.2). The mycophenolate mofetil micro powder is small in particle size, free of gravel feeling in the oral cavity, easy to swallow, capable of being prepared into orally disintegrating tablets and the like and especially suitable for being used by people with dysphagia, the mycophenolate mofetil micro powder comprises mycophenolate mofetil pill cores and the coating film, on one hand, the coating film can shield light, improve light stability and reduce formation of Z-isomers, and on the other hand, the coating film can be used for preparing oral disintegrating tablets and the like; on the other hand, 2-morpholinyl ethanol generated by hydrolysis in the stomach can be reduced, and adverse reactions are reduced.

The application relates to a double-channel near-infrared two-region rare earth nanometer probe and a preparation method and application thereof. The double-channel near-infrared two-region rare earth nanometer probe comprises a probe A and a probe B; the probe A and the probe B are both three-layer structures, and sequentially comprise a core layer, a shell layer and a hydrophilic coating layer from inside to outside; in the probe A, the core layer material is NaYF4:Er, and the shell layer material is NaYF4; in the probe B, the core layer material is NaYbF4:Ce,Er,Zn, and the shell layer material is NaYF4. The probe has the characteristics of 808 nm / 940 nm orthogonal excitation and 1532 nm narrow-band emission, has the advantages of high light stability, rapid metabolism and high biocompatibility, and can realize deep tissue high signal-to-noise ratio in-vivo imaging.

The present invention provides a composite stabilizer for PVC, characterized in that it comprises the following components by mass fraction: 35-50% of modified titanium dioxide, 15-25% of organic acid salt intercalated zinc-aluminum-lanthanum hydrotalcite, and 25-40% of tetrakis(3-mercaptopropionic acid) pentaerythritol ester. The modified titanium dioxide is TiO2 / CQDs; the organic acid salt intercalated zinc-aluminum-lanthanum hydrotalcite is itaconate-ZnAlLa-LDHs. The composite stabilizer is used in PVC products to improve the stability, mechanical properties and flame retardancy of the PVC products.

The invention discloses a flame-retardant anti-ultraviolet automotive interior trim part material and a production process thereof. The flame-retardant anti-ultraviolet automotive interior trim part material is prepared from the following raw materials in parts by weight: 70-90 parts of polycarbonate, 5-15 parts of an ultraviolet light absorber, 5-15 parts of flame-retardant filler, 5-10 parts of a flame-retardant aid, 4-6 parts of a dispersing agent, 3-8 parts of carbon black and 1-2 parts of an antioxidant. According to the invention, the ultraviolet light absorber compound is added, and 2-hydroxy-4-n-octyloxybenzophenone, 4-benzoyloxy-2 and hexamethylphosphoric triamide in the ultraviolet light absorber compound are mixed according to a ratio, so that the performance of the ultraviolet light absorber is improved, and a product can be endowed with excellent anti-aging performance; the light stability and the ageing resistance of the automobile interior trim part are improved.

The invention belongs to the technical field of aggregation-induced emission materials, and particularly relates to a fluorescent metal organic framework / cellulose nanocrystal composite material as well as a preparation method and application thereof. The preparation method of the fluorescent metal organic framework / cellulose nanocrystal composite material comprises the following steps: mixing a zinc acetate solution, a tetra (4-carboxybenzene) ethylene solution, nitric acid and a suspension of CNCs, and carrying out solvothermal reaction to obtain the fluorescent metal organic framework / cellulose nanocrystal composite material, the mass ratio of the zinc acetate to the tetrakis (4-carboxybenzene) ethylene to the CNCs is (10-100): (5-100); the mass ratio of the tetra (4-carboxybenzene) ethylene to the CNCs is (5-20): (0.1-5). The fluorescent metal organic framework / cellulose nanocrystal composite material prepared by the preparation method provided by the invention is good in dispersity in water, has an aggregation-induced emission effect and is excellent in sensing performance.

The invention relates to the technical field of high polymer materials, and discloses weather-resistant and ultraviolet-resistant plastic particles and a preparation method thereof.The weather-resistant and ultraviolet-resistant plastic particles are prepared from, by weight, 180-220 parts of PVC resin, 55-70 parts of ethylene propylene diene monomer, 15-20 parts of modified nano titanium dioxide, 5-10 parts of an ultraviolet screening agent, 10-15 parts of a composite flame retardant, 20-35 parts of a plasticizer and 3-5 parts of a lubricant; the modified nano titanium dioxide is nano titanium dioxide subjected to surface modification by a silane coupling agent, and the ultraviolet screening agent is obtained by reacting 2, 2, 6, 6-tetramethylpiperidinol with dimethyl-(E)-sym-diphenylethyl-4, 4-oxalic acid ester and then copolymerizing with styrene. The light stability of the material is effectively improved, so that the material has good weather-resistant and ultraviolet-resistant effects.

The present invention relates to the technical field of energy materials, and discloses an organic solar cell and a heterogeneous interface control method thereof, comprising: blending ethoxy long-chain organic phosphoric acid and metal oxide nanoparticles in an organic solvent to obtain a basic solution; stirring the basic solution with an ultrasonic oscillator to obtain a nano solution; spin coating the nano solution on the surface of indium tin oxide of the organic solar cell to obtain a film; and subjecting the film to low-temperature annealing treatment. The organic solar cell proposed by the present invention can improve the chemical, electrical and electronic properties of the organic-inorganic heterogeneous interface, utilizes molybdenum oxide nanoparticles passivated by organic phosphoric acid, performs micro-environment control on the interface between metal nanoparticles and organic semiconductor materials, improves the separation and transfer efficiency of photogenerated charges of semiconductor materials, realizes the highest photoelectric conversion efficiency of organic solar cells using metal oxides as hole transport layers, and improves the photostability of organic solar cells.

The application discloses a kind of near-infrared benzothiadiazole dye sensitized rare earth upconversion luminescence nano-probes and preparation method thereof;Probe is composed of near-infrared benzothiadiazole dye and upconversion nanoparticle, benzothiadiazole dye is compounded with ligand-free lanthanide ion doped upconversion nanoparticle, and upconversion luminescence is enhanced.This application preparation method is simple, and it does not involve complex core-shell structure and energy migration process, benzothiadiazole dye is directly compounded with ligand-free rare earth nanoparticle, and upconversion luminescence nano-probe is formed, under the irradiation of 808nm laser, the emission spectrum of benzothiadiazole dye and the absorption spectrum of sensitizer ion in upconversion nanoparticle overlap, which can effectively enhance the upconversion luminescence intensity of nano-probe, and keep good light stability, keep more than 90% of initial luminescence intensity under the irradiation of 120 minutes excitation light.

The invention discloses a method for pH-coordinated ethanol-induced protein assembly nano-encapsulation of lutein and protein-based lutein nanoparticles and applications. The preparation method comprises: adjusting the pH of the protein dispersion to alkaline, fully stirring, and dripping the lutein-anhydrous ethanol solution into the alkaline protein solution; during the process of evaporating and removing the ethanol, the unfolded alkaline protein is folded back so that the lutein is encapsulated in the protein hydrophobic cavity; during the process of adjusting the pH to neutral, the unfolded protein is folded back and rearranged for the second time, and the lutein undergoes a second encapsulation, and finally forms a densely structured protein-based lutein nanoparticles. This method has simple equipment, simple steps, safety and greenness, easy-to-obtain raw materials, and is economical and efficient; the prepared protein-based lutein nanoparticles significantly improve the water dispersibility, thermal stability, light stability, storage stability, digestion stability and bioavailability of lutein; therefore, it has broad development prospects in industries such as pigments, feed, food and medicine.

The application belongs to the cross field of nanomaterials and coordination chemistry, and specifically discloses a near-infrared responsive photothermal silver-palladium nanocluster material, a preparation method and application in near-infrared photothermal conversion. 362 H 270 Ag 20 Cl4F 12 P8Pd5Sb2, which is abbreviated as Ag 20 Pd5(4‑EBP) 18 (DPPP)4(SbF6)2·2CH2Cl2, belongs to a monoclinic system, and a space group is P21 / n, a =16.228(13)Å, b =40.670(3)Å, c =25.941(2)Å, α=90°, β =100.283(2)°, gamma =90°, V=16846(2)Å 3 , and a molecular weight is 8170.22 Da. The preparation method has short process flow, simple operation, and raw materials are easy to obtain. The photothermal silver-palladium nanocluster has a high photothermal efficiency of 73.25% under 915 nm (0.6 W / cm 2 ) laser excitation, and has good application prospect.

The invention discloses a hymexazol-containing composition with an excellent sterilization effect and a preparation method, and relates to the technical field of agricultural bactericides, the composition comprises the following raw materials: modified graphene oxide loaded hymexazol, modified graphene oxide loaded metalaxyl, beta-oligomeric acid and a surfactant; the mass ratio of the modified graphene oxide loaded hymexazol to the modified graphene oxide loaded metalaxyl to the beta-oligomeric acid to the surfactant is (3-5): (1.5-2.5): (1-1.5): (0.8-1.2). The hymexazol composition provided by the invention has the advantages of excellent bactericidal effect, high utilization rate and small damage to the environment.

The invention relates to the field of lutein ester processing, in particular to a preparation method of lutein ester microcapsules. In order to solve the problems of loss of active ingredients and poor stability of the lutein ester microcapsules obtained by the preparation method in the prior art, the invention provides the preparation method of the lutein ester microcapsules, which comprises the following steps: cleaning, drying, crushing and ultrasonically treating marigold pollen to obtain the lutein ester microcapsules. And the lutein ester is efficiently extracted by combining a supercritical carbon dioxide extraction technology with a tributyl citrate entrainer. And then, mixing the extract with a wall material to form an emulsion, preparing microcapsules by using a supercritical fluid rapid expansion method, finally, adding cane sugar, gradually cooling and freezing, and carrying out high-vacuum drying. Compared with a traditional method, the method has the advantages that the mechanical strength and the thermal stability of the microcapsule are enhanced, meanwhile, the loss of active ingredients is reduced, and the quality and the shelf life of the product are improved.

The invention discloses a near-infrared photosensitizer for promoting pyroptosis in an endoplasmic reticulum targeting manner. The near-infrared photosensitizer comprises a preparation process of the near-infrared photosensitizer and a tumor photoimmunotherapy effect combined with photothermal and photodynamic effects. According to the invention, heptamethine cyanine molecules are modified by the photosensitizer, and the introduced p-toluene sulfonamide group and tetraphenyl ethylene (TPE) group can specifically recognize a sulfanilamide receptor on an endoplasmic reticulum membrane and specifically target to the endoplasmic reticulum of a cell, so that the photo-thermal stability and ROS (reactive oxygen species) generation efficiency of the photosensitizer are enhanced. According to the photosensitizer disclosed by the invention, different groups or probes can be introduced to the other end of the TPE, and when R is equal to H, the photosensitizer is IR780T-ER disclosed by the invention; and when R is equal to IR780-ER, the photosensitizer is T780T-ER disclosed by the invention. The photosensitizer has cell endoplasmic reticulum targeting and accumulation effects, and endoplasmic reticulum stress can be caused under near-infrared light irradiation. The photosensitizer disclosed by the invention has the effect of enhancing the tumor immunotherapy effect by inducing endoplasmic reticulum stress of tumor cells to generate immunogenic death and triggering pyroptosis of the cells. The photosensitizer disclosed by the invention is expected to be applied to photoimmunotherapy of clinical tumors.

The invention relates to the field of fluorescent dyes, in particular to a near-infrared fluorescent dye for brain imaging as well as a preparation method and application of the near-infrared fluorescent dye. The near-infrared fluorescent dye for brain imaging has the advantages of novel structure, good biocompatibility, large Stokes shift, high light stability, high fluorescence signal-to-noise ratio and the like; the near-infrared fluorescent dye prepared by the invention is simple in preparation process, mild in reaction condition, short in synthesis path and beneficial to industrial production, and has a wide application prospect.

The invention discloses a g-C3N4 (at) Zn / Eu-MOF composite dual-energy light conversion agent and a preparation method thereof, and a dual-energy light conversion film and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing g-C3N4 by high-temperature calcination of melamine; secondly, preparing Zn / Eu-MOF through a hydrothermal reaction of europium nitrate, zinc nitrate, trimesic acid and DMF; and finally, dissolving g-C3N4 in ethanol, carrying out ultrasonic treatment, adding Zn / Eu-MOF, and stirring for a certain time to obtain the g-C3N4-Zn / Eu-MOF composite dual-energy light conversion agent. And adding the g-C3N4atZn / Eu-MOF composite dual-energy light conversion agent into a homogeneous aqueous solution of PVA, uniformly stirring, and drying at 40 DEG C to obtain the PVA-based dual-energy light conversion film. The g-C3N4 and Zn / Eu-MOF are combined to obtain the blue light and red light dual-energy composite light conversion material, the light absorption range is widened, and the light absorption performance is improved, so that ultraviolet light is effectively absorbed, efficient conversion of short-wave light is achieved, the light energy utilization efficiency is remarkably improved, meanwhile, the light stability is enhanced, the durability of a PVA-based dual-energy light conversion film in the agricultural environment is enhanced, and the application prospect is wide. And the development of sustainable agriculture can be promoted.

The application provides a Bi2O2CO3-MIL-68(In) heterojunction composite material and a preparation method and application thereof, and belongs to the technical field of photocatalytic materials, the field of persulfate catalysis and the field of environmental governance. The composite material is obtained by loading Bi2O2CO3 on the surface of MIL-68(In) to form a Z-type heterojunction structure; the Bi2O2CO3 is a spherical body with a diameter of 200-500 nm, and the surface is a stacked granular structure; the MIL-68(In) is a regular hexahedral rhombic rod-shaped structure with a particle size of 5-10 mu m, and the Bi2O2CO3 is dispersedly loaded on the surface of the MIL-68(In). The application has the advantages of simple operation, strong visible light absorption capacity of the heterojunction material, stable photocatalytic performance, high degradation efficiency and the like, and has a potential application prospect in the field of photocatalytic persulfate.