207 results about "Rhodamine" patented technology

The invention discloses a long-life phosphorescent sulfur quantum dot, a multicolor long-life phosphorescent sulfur quantum dot composition and a preparation method and application thereof, and belongs to the technical field of phosphorescent materials and information encryption. The preparation method comprises the following steps: carrying out solvothermal reaction on a sulfur source and ethylenediamine to obtain sulfur quantum dots, and adding a sulfur quantum dot aqueous solution into a boric acid matrix to react to prepare long-life phosphorescent sulfur quantum dots (SQDs-MA); the long-life phosphorescent sulfur quantum dots and a rhodamine B aqueous solution are blended and dried to prepare the multicolor long-life phosphorescent sulfur quantum dot composition (RhB / SQDs-MA). When excited by ultraviolet light, the SQDs-MA shows a wide absorption range of 200 to 700 nm. When excitation is carried out at 362 nm, the SQDs-MA shows a blue fluorescence emission peak at 436 nm. The SQDs-MA powder emits bright green phosphorescence after the irradiation of an ultraviolet lamp is turned off, and under the optimal excitation of 373 nm, the maximum phosphorescence emission value is displayed at 526 nm. Under the irradiation of ultraviolet light, the RhB / SQDs-MA can emit yellow, orange and red phosphorescence at the wavelength of 584 nm, 600 nm and 620 nm.

The invention relates to the technical field of membranes, in particular to a photocatalytic self-cleaning BiOCl / COF composite membrane as well as a preparation method and application thereof. BiOCl nanosheets and COF nanosheets with photocatalytic characteristics are synthesized respectively, the two nanosheets are deposited on the surface of a polymer substrate film through a vacuum filtration technology, and due to the fact that a large number of oxygen-containing groups in the COF nanosheets improve the dispersity of the bismuth oxychloride nanosheets through hydrogen-bond interaction, disordered stacking of BiOCl in the stacking process is reduced, and the photocatalytic performance of the BiOCl nanosheets is improved. The COF is added to assist the bismuth oxychloride nanosheets in forming an interlayer channel with a screening effect, and the two nanosheets form a heterostructure, so that the photocatalytic capability of the composite film is enhanced. The preparation method of the composite membrane is simple, and the composite membrane has good permeability to Evans blue, Congo red, rhodamine B and other dyes, has excellent photocatalytic self-cleaning ability, and can be applied to separation of organic wastewater generated in the printing and dyeing industry.

The invention discloses a method for distinguishing similar antibiotics by using a fluorescent sensing array based on YOLOv5 target recognition. The method comprises the following steps: S1, preparing GMP-Tb solid powder; s2, mixing the GMP-Tb solid powder with a rhodamine B solution in proportion to obtain a multi-proportion fluorescent probe; s3, mixing antibiotics with different concentrations with the multi-proportion fluorescent probe to obtain a fluorescent sensing array; s4, collecting color images in the fluorescent sensing array and dividing the color images into a training set and a test set; s5, constructing an OLOv5 optic nerve model, inputting the acquired color image into a YOLOv5 optic nerve model, and outputting a feature value of the acquired color image; s6, inputting the characteristic value of the color image into a classifier model for prediction classification to obtain a distinguishing result; and S7, inputting a color image formed by mixing the to-be-detected antibiotic and the multi-proportion fluorescent probe into the YOLOv5 optic nerve model to obtain a characteristic value of the color image, and then outputting a distinguishing result through the classifier model.

The invention belongs to the technical field of photocatalytic materials, and discloses a preparation method of a BiOCl / BiOI composite photocatalyst for visible light degradation of rhodamine B. The energy band structure of BiOCl is regulated and controlled in cooperation with BiOI, and efficient photocatalytic decoloration of rhodamine B with wide spectral response is achieved through S-type interface charge transfer. A petal-shaped BiOCl / BiOI heterojunction with R = 8: 1, a BiOCl0. 88I0. 12 solid solution and a BiOCl0. 8I0. 2 solid solution show excellent visible light catalytic activity, and about 92.52% of rhodamine B molecules, 99.7% of rhodamine B molecules and 99.7% of rhodamine B molecules are respectively degraded by the BiOCl / BiOI heterojunction and the BiOCl0. 88I0. 12 solid solution after being irradiated by visible light for 10 minutes. The catalytic reaction accords with the two-stage one-stage kinetic law, and high photocatalytic efficiency can still be maintained after five times of circulation. The single BiOCl and BiOI respectively degrade about 64.3% and 10.02% of rhodamine B molecules under the same light reaction condition, and the catalytic reaction follows a first-level kinetic model. The preparation method has the advantages of being low in preparation temperature, simple in technological process, stable in chemical property and the like, the large-scale two-dimensional micron / nanosheet and the three-dimensional self-assembly structure of the large-scale two-dimensional micron / nanosheet can be obtained only through a hydrothermal and water bath synthesis technology, and the preparation method has great application value in the field of visible light degradation of organic pollutants.

The invention relates to the technical field of preparation of anti-counterfeiting films, and particularly discloses an ultraviolet fluorescent anti-counterfeiting film based on multi-layer optical variability and a preparation method of the ultraviolet fluorescent anti-counterfeiting film. The ultraviolet fluorescent anti-counterfeiting film based on multilayer optical variability comprises a film substrate layer, a first optical variability layer and a second optical variability layer, wherein the first optical variable layer and the second optical variable layer are located on the two sides of the thin film base material layer respectively; the first optical variable layer and the second optical variable layer respectively comprise rhodamine B, fluorescein sodium and europium oxide. According to the ultraviolet fluorescent anti-counterfeiting film, the first light-variable layer and the second light-variable layer which contain light-variable materials such as rhodamine B, fluorescein sodium and europium oxide are arranged on the two sides of the film base material layer, so that the prepared multi-layer light-variable ultraviolet fluorescent anti-counterfeiting film has relatively short ultraviolet radiation color change reaction time; wide application prospects are realized.

The present invention is a method for fluorescent detection of copper ions. The method uses an amino-functionalized zirconium dioxide nanotube array film as a carrier and rhodamine B as a fluorescent probe, and immobilizes copper ions and rhodamine B on the amino-functionalized zirconium dioxide nanotube array film carrier to prepare a detection sample, and the detection of copper ions can be achieved by testing the fluorescence intensity of the detection sample. The method is simple and easy to implement, has good detection performance, low cost, small amount of waste liquid, and the amino-functionalized zirconium dioxide nanotube array film carrier can be regenerated and reused.

The invention discloses an ether chain modified rhodamine fluorescent dye, an ether chain modified rhodamine fluorescent dye probe and a preparation method and application thereof, through modification of an ether chain, the water solubility of the rhodamine dye is improved, the aggregation quenching effect is reduced, meanwhile, the intramolecular torsional charge transfer (TICT) is reduced through the electron withdrawing effect of oxygen atoms, and the fluorescence sensitivity is improved. Finally, the quantum yield of the rhodamine dye is greatly improved. The quantum yield of ether chain modified oxygen rhodamine water is increased from 0.31 to 0.70, and the quantum yield of silicon-based rhodamine water is increased from 0.19 to 0.41. The rhodamine dye disclosed by the invention has the characteristics of high brightness, easiness in functional derivation and the like, and has application prospects in the fields of fluorescent probes, fluorescent labels, super-resolution fluorescence imaging and the like.

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 a red fluorescent silicon nanodot as well as a preparation method and application thereof. The method comprises the following steps: S1, weighing sulforhodamine 101, adding ultrapure water for dissolving, then adding N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, uniformly stirring, transferring the obtained mixture into a reaction kettle, and heating for reaction; and S2, after the reaction is finished, cooling to room temperature, purifying the obtained product by using a silica gel chromatographic column, eluting by using an eluent, collecting the eluent, and finally, freeze-drying to obtain the red fluorescent silicon nanodots. Compared with common blue-green fluorescence, red fluorescence emission has deeper tissue penetrability and background fluorescence interference resistance; the silicon nanodot provided by the invention not only has excellent light stability and high quantum yield, but also has characteristics similar to lipophilic cations, and can specifically target mitochondria in living cells; in addition, the silicon nanodots also show excellent imaging ability in zebrafish embryos and juvenile fish bodies.

The invention relates to preparation of a molybdenum disulfide coated barium titanate nano material and application of the molybdenum disulfide coated barium titanate nano material in the field of piezoelectric light concerted catalysis. Compared with pure-phase MoS2 and BaTiO3, the molybdenum disulfide coated barium titanate nano material synthesized by a hydrothermal method shows a remarkably enhanced piezoelectric optical effect. Under the synergistic effect of ultrasound and light, the molybdenum disulfide coated barium titanate nano material can realize efficient degradation of rhodamine B and remarkable improvement of hydrogen production efficiency, the degradation rate constants are 2.3 and 14.4 times of those of pure-phase MoS2 and BaTiO3 respectively, and the hydrogen production efficiency is 2.3 and 1.9 times of those of pure-phase MoS2 and BaTiO3 respectively. The piezoelectric catalyst BaTiO3 and the photocatalyst MoS2 can be well combined to form a heterojunction, so that the electron-hole separation efficiency is improved. The invention discloses a method for improving the production of hydrogen by degrading rhodamine B and decomposing water by the material by constructing the heterojunction, and the method is simple in process flow, high in operability and wide in application prospect.

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 structural formula of the oxygen-rhodamine near-infrared fluorescent dye is shown as a formula (a) or a formula (b), and R1 and R2 are respectively selected from hydrogen, alkyl or alkenyl; r3 and R4 are respectively selected from hydrogen, alkyl and alkenyl; r5-R9 are respectively selected from hydrogen, alkyl, methoxyl, ethyoxyl, halogen, carboxyl, sulfonic acid group, ethylene glycol group, hydroxyl or amino, and N is an integer greater than or equal to 0. The invention also discloses a preparation method and application of the fluorescent dye. The compound is novel in structure, excellent in performance, simple in preparation method and good in product application prospect.

Provided are a system for monitoring a hydroxyl radical scavenging index in water using a real-time multi-fluorescence analyzer and a parallel factor analysis apparatus and a method therefor, wherein the system monitors the hydroxyl radical scavenging index in water using the real-time multi-fluorescence analyzer and the parallel factor analysis apparatus, whereby it is possible to monitor the characteristics of an organic material in target water through a continuous flow analysis method without using an existing indicator material, rhodamine B. In addition, in a water treatment system having an advanced oxidation process (AOP) applied thereto in which ozone, ultraviolet rays, hydrogen peroxide, and the like are combined, it is possible to simply calculate the hydroxyl radical scavenging index in the target water through an organic material characteristic index for each component obtained by classifying the characteristic structure of the organic material in water using real-time fluorescence analysis by means of a parallel factor (PARAFAC) model. Accordingly, the amount of chemical injection and the amount of ultraviolet irradiation, which are process control variables, can be controlled, and under given operating variable conditions, the removal rate of a target material in water is predicted, whereby the system can also be used as a diagnostic tool for process evaluation in the advanced oxidation process. Furthermore, the system can provide operational convenience that enables process control while reducing the amount of power consumed in the advanced oxidation process even though the type of target material and the water quality characteristics of raw water change.

The present invention is directed to fluorescent rhodamine dyes having spectral properties suited to the creation of multiplex assay systems for use in molecular biology, cell biology and molecular genetics. The rhodamine dyes have the following structure.

The invention relates to an amorphous bismuth molybdate photocatalytic material as well as a preparation method and application thereof, and belongs to the technical field of photocatalytic materials. The preparation method of the amorphous bismuth molybdate photocatalytic material comprises the following steps: (1) dissolving Bi (NO3) 3.5 H2O in an HAC solution, uniformly mixing and stirring at room temperature, and marking as a solution A; dissolving Na2MoO4 in water, adding a water-soluble anionic polymer, uniformly stirring, and marking as a solution B; and (2) slowly dropwise adding the solution B into the solution A, carrying out a co-precipitation reaction under the conditions of normal temperature and normal pressure, after dropwise adding is completed, maintaining heating and stirring for a period of time, then carrying out normal-temperature stirring, and after stirring is completed, carrying out centrifugation, washing and drying to obtain the amorphous bismuth molybdate photocatalytic material A-Bi2MoO6. The modified amorphous A-Bi2MoO6 provided by the invention has a relatively large specific surface area and more mesoporous structures, so that the adsorption of rhodamine B is enhanced, and the adsorbed dye can be efficiently catalyzed and degraded under the action of illumination.

The application provides a cucurbituril fluorescent probe and a preparation method and application thereof, and a qualitative and quantitative detection method of melamine, and belongs to the field of substance detection. The application provides a cucurbituril fluorescent probe, which comprises cucurbit[8]uril (CB[8]) and rhodamine, and the rhodamine is included in the cavity of the cucurbit[8]uril. The application contains the rhodamine in the cavity of CB[8] through host-guest non-covalent interaction, and aims at detecting melamine; the probe has high sensitivity, simple operation and the characteristics of rapid detection.

The present application relates to the field of biological detection, and more particularly to compounds, probes, kits and their applications. The compounds provided by the present application include: modified rhodamine series fluorescent dyes and D-type amino acids, intermediate groups for regulating the luminescence properties of the dyes. Through the optimization of the dye part, we obtain a series of compounds that can be detected in different fluorescent color channels (400-820 nm).

The invention relates to a double-response visual fluorescent probe as well as a construction method and application thereof. According to the present invention, carboxyl activation is performed on rhodamine B, Eu < 3 + > fixes the carboxyl of TAT through bridging and chelation, the Rh B can be combined with EuTAT through the amide reaction due to the steric hindrance effect of the asymmetric amino group to obtain the spirolactam ring so as to obtain the switch fluorescent probe controlled by the spirolactam ring, and the synthesized EuTAT-Rh B compound has characteristics of pH responsiveness and low fluorescence background, according to pH-dependent morphological structure conversion and fluorescence signal conversion caused by conjugate system change induced by vanadate coordination, visual vanadate solution monitoring and synchronous morphological discrimination can be realized in ultraviolet and fluorescence dual channels, and a convenient, simplified and highly sensitive visual platform is provided for visual analysis of vanadate.

According to the method, melamine and urea are used as carbon and nitrogen sources, hollow tubular phosphorus-doped carbon nitride is constructed by adopting a sodium polyphosphate-assisted hydrothermal-thermal polymerization method, molybdenum disulfide is loaded on the surface of P-TCN in a hydrothermal in-situ growth mode, and the hollow tubular phosphorus-doped heterojunction photocatalyst is obtained. The hollow tubular phosphorus-doped heterojunction photocatalyst P-TCN / MoS2 is prepared; the catalyst disclosed by the invention shows excellent degradation performance on ciprofloxacin, levofloxacin, rhodamine B and methylene blue under an illumination condition. The catalyst disclosed by the invention is simple in preparation method, low in cost and easily available in raw materials, and has a wide application prospect in the field of photocatalytic treatment of antibiotic and dye wastewater.

The invention discloses a preparation method and application of a bimetallic nano-enzyme induced MOFs (at) CDs material, and the preparation method at least comprises the following steps: I, dissolving FeCl3, CoCl2 and 2-aminoterephthalic acid in N, N '-dimethylformamide to form a mixed solution I, and carrying out a reaction I to obtain a bimetallic MOFs material; step II, mixing tricarballylic acid and m-phenylenediamine, and carrying out a reaction II to obtain carbon dot powder; step III, dissolving the carbon dot powder obtained in the step II in methanol, and adding rhodamine B dye to obtain a CDs material; and IV, dissolving the bimetallic MOFs material obtained in the step I and the CDs material obtained in the step III in water, stirring, and drying to obtain the MOFs (at) CDs material. The synthesized nano-enzyme is simple to prepare and high in catalytic activity, the carbon dot material is encapsulated into the MOFs material, the fluorescence characteristic of the MOFs material is enhanced, and the carbon dot material is combined with o-phenylenediamine to be used for detecting H2O2.

The present invention belongs to the technical field of organic synthesis. Provided are a rhodamine-methylene blue derivative fluorescent probe (I), and a preparation method therefor and the use thereof. In the preparation method for the fluorescent probe, raw materials are easily available, and a synthesis method is simple and convenient. The fluorescent probe can achieve synchronous double-channel fluorescence recognition of intracellular ClO- and ATP, and has a detection limit regarding ClO- of 0.90 nM and a detection limit regarding ATP of 23.60 nM; therefore, the fluorescent probe can be used for fluorescence quantitative detection of ClO- and ATP, can also be used in synchronous fluorescence imaging of ClO- and ATP in cells under the stimulation of a drug, and has a wide potential application value.

The present application relates to a kind of electron donor (alpha-trithiophene) modified rhodamine dye, its synthesis method and application.The dye has strong absorption of 500-600 nm, can emit efficiently in 550-700 nm band, suitable for deep tissue imaging.The structure endows mitochondria targeting ability, can be used as biomarker probe to realize subcellular organelle accurate positioning;Meanwhile, under light, it can efficiently produce reactive oxygen species through type I mechanism, suitable for the photodynamic regulation and biosensing for non-disease diagnosis and treatment purposes.In addition, the dye can also be used as organic photocatalyst for environmental or energy-related photocatalytic reaction.The present application provides a new choice for multi-scene optoelectronic functional materials.

The present invention discloses a fluorescent probe for detecting O2 ·‑ , which is constructed with silicon rhodamine as the fluorescent group and diphenylphosphinyl as the recognition group. In the presence of O2 ·‑ , O2 ·‑ will perform a nucleophilic attack on the phosphate ester, followed by 1,6 elimination, resulting in the decomposition of the quaternary ammonium salt, releasing the silicon rhodamine luminophore and promoting its ring-opening. Before the reaction, the silicon rhodamine quaternary ammonium salt 8 with a spiro structure remains non-fluorescent and has a low background; after reacting with O2 ·‑ , the free and ring-opened silicon rhodamine dye can be excited to emit near-infrared fluorescence, thereby achieving the purpose of detecting O2 ·‑ , and it will have good application prospects in the field of bio-related sciences. The fluorescent probe for detecting O2 * - in the present invention has the structure shown in Formula 8: #imgabs0#

The invention discloses a preparation method of a BiOBr / LaNiO3 nanofiber composite photocatalyst, which is characterized in that a perovskite material LaNiO3 prepared by electrostatic spinning is used as a carrier, and BiOBr is loaded on the fiber surface by a solvothermal method to form a heterojunction structure. According to the composite material, separation of photon-generated carriers is promoted through heterojunction of BiOBr and LaNiO3 nanofibers, and the catalytic activity under visible light is remarkably improved. The invention further discloses application of the prepared BiOBr / LaNiO3 nanofiber composite photocatalyst in degradation of rhodamine B. The degradation efficiency of the BiOBr / LaNiO3 nanofiber composite photocatalyst on rhodamine B can reach 93% within 90 min, and after four times of circulation, the composite material shows good circulation stability. The method has the advantages of being low in cost, high in stability, environmentally friendly and the like, and a green solution is provided for organic dye pollution control.

The invention discloses a preparation method and application of a metal-organic dye adsorbent based on sulfonyl calixarene, Ni (II) is used as a metal node, and the metal-organic dye adsorbent is prepared through a solvothermal directional assembly strategy by utilizing the synergistic coordination effect of a dicarboxylic acid ligand 4, 4 '-dithiobisbenzoic acid and p-tert-butylsulfonyl calix [4] arene (H4TBSC). The sulfonyl calixarene-based structure metal-organic dye adsorbent with definite inner and outer cavity partitions is successfully constructed. The adsorption material comprises a central large cavity and two symmetrically distributed peripheral cavities, and the special structure enables the adsorption material to show excellent selective adsorption performance on Congo red (CR) dye molecules. And efficient separation of a Congo red / rhodamine B (RhB) mixed system can be realized through a molecular size screening effect. The invention provides a new thought and method for developing a multifunctional supramolecular adsorption material based on dynamic coordination engineering, and has a wide application prospect in the fields of dye separation and wastewater treatment.

The application relates to the technical field of complex nanomaterials, in particular to a preparation method of an indium complex nanomaterial, the obtained material and application thereof. The application discloses a preparation method of an indium complex nanomaterial, which comprises the following steps: adding inorganic indium salt and 5-bromoisophthalic acid into N,N-dimethylformamide to obtain a transparent reaction liquid; carrying out a solvothermal reaction on the reaction liquid in a reaction kettle; cooling the reaction kettle after the solvothermal reaction, and separating to obtain a solid crude product; washing the solid crude product, drying, and obtaining the indium complex nanomaterial. The application also discloses the indium complex nanomaterial prepared by the above preparation method and application of the indium complex nanomaterial in adsorption of organic dye wastewater. The indium complex nanomaterial prepared by the application has excellent adsorption performance on Congo red dye in a water environment, and also has certain adsorption performance on rhodamine B and methyl orange, and has relatively high practical application value in treatment of organic dye wastewater containing Congo red dye.

The application belongs to the technical field of fluorescent probe, and particularly relates to a near-infrared selenium rhodamine photodynamic photosensitizer as well as a preparation method and application thereof. In order to provide a selenium rhodamine photosensitizer with an excitation light wavelength in a near-infrared region, a selenium rhodamine dye is used as a parent chromophore and an electron acceptor, anthracene is used as an electron donor, and a non-heavy atom photodynamic photosensitizer AN-SeR is designed and synthesized. The photosensitizer exists in a monomer and a J-aggregate in an aqueous solution. The J-aggregate can not only improve the singlet oxygen quantum yield by reducing the energy level gap between the singlet state and the triplet state, but also more importantly expand the excitation light wavelength of AN-SeR from the visible region to the near-infrared region which is more suitable for biological application. Under near-infrared light (650 nm) irradiation, the half lethal concentration of AN-SeR to cancer cells is 0.052 muM, and AN-SeR has potential biological application value.

This invention discloses a GSH-functionalized carbon dots / rhodamine B ratiometric fluorescence system, its construction method, and its application in nitrite detection. GSH-CDs are synthesized via a one-step hydrothermal method by mixing citric acid, o-phenylenediamine, glutathione, and hydrochloric acid in water. Unreacted precursors and small molecules are removed by purification, and the GSH-CDs are obtained by freeze-drying. The ratiometric fluorescence system is constructed by mixing rhodamine B, GSH-CDs, and an acidic buffer solution. The fluorescence intensity ratio F of GSH-CDs to rhodamine B is established. 460 / F 590 With nitrite (NO2) ‑ A calibration curve between concentrations was obtained, and the NO2 in the actual sample was experimentally detected using the spiked recovery method. ‑ Content. Under acidic conditions, with NO2... ‑ With increasing concentration, the GSH-CDs / RhB fluorescence intensity ratio (I 460 / I 590 Significant changes occurred, with the fluorescence intensity ratio compared to NO2. ‑ There is a good linear relationship between concentrations. Compared with the detection platform based on GSH-CDs, the ratio fluorescence system provided by this invention has a lower detection limit and significantly higher sensitivity.

The invention discloses a baijiu detection method based on a colorimetric and fluorescent dual-signal sensing array, and relates to the technical field of substance detection and analysis. According to the detection method, the principle that rhodamine B and rhodamine 6G have remarkable ultraviolet-visible spectrums and fluorescence characteristic peaks, and rhodamine B and rhodamine 6G can be accelerated to be catalytically degraded by MnONSs under the acidic condition is utilized, so that optical signals (colorimetric-fluorescence double signals) of rhodamine B and rhodamine 6G can be adjusted by adjusting the catalytic action of MnONSs; according to the method, a colorimetric and fluorescent dual-signal sensing array is constructed, then the dual-signal sensing array is utilized to form characteristic fingerprints of various Baijiu samples, rapid and accurate detection of Baijiu is achieved, and the method is few in types of detection materials, simple and convenient to operate and more suitable for large-scale popularization and application.