47 results about "Metal clusters" patented technology

The invention discloses an isomorphic bismuth oxide cluster material as well as a preparation method and application thereof. Bismuth atoms have a relatively high EUV absorption cross section, and the bismuth atom type photoresist is low in toxicity, low in environmental pollution and beneficial to green and environment-friendly production and processing. According to the method for preparing the bismuth oxygen cluster, a bismuth source and carboxylic acid ligands are synthesized into the bismuth oxygen cluster through an ultrasonic standing method or a heating and stirring method by controlling mixing conditions. According to the synthesis method of the bismuth oxygen cluster, the bismuth oxygen metal oxygen cluster containing various carboxylic acids can be synthesized. The bismuth oxide cluster structure has the size of about 2nm and uniform distribution, and can effectively improve the resolution of the bismuth oxide cluster photoresist. Besides, by carrying out structural regulation and control on the bismuth source and the carboxylic acid ligand, the photoetching performance of the material can be optimized, an electrophilic or electron donating group can be introduced, and the dissolving property of the patterned material can be regulated, so that the film thickness, the film roughness, the resolution ratio, the film adhesion and the etching resistance are influenced.

The invention relates to the technical field of gas adsorption composite materials, in particular to zirconium-based MOF composite filter cloth and a preparation method and application thereof. The preparation method comprises the following steps: by taking a polyester non-woven fabric as a flexible carrier, sequentially carrying out alkali liquor activation and epoxy silane surface treatment to construct an active interface layer rich in epoxy groups; synthesizing a difunctional organic ligand simultaneously containing carboxylic acid and thioether functional groups by adopting a one-pot condensation reaction; in-situ self-assembly of zirconium metal clusters and bifunctional ligands is realized through a solvothermal-hot pressing synergistic process, oriented growth of MOF crystals on the surfaces of fibers and covalent interface connection formed through epoxy-carboxyl ring-opening reaction of a silane coupling agent are synchronously completed, and the MOF composite filter cloth is obtained. According to the zirconium-based MOF composite filter cloth disclosed by the invention, the efficient and high-selectivity capture of trace SOs is realized by utilizing the synergistic effect of thioether groups in ligands and unsaturated sites of metal clusters, and the regeneration is realized to a certain extent.

The invention provides an atomic precision metal cluster containing a multi-layer ligand spherical shell and a water phase synthesis method of the atomic precision metal cluster. The aqueous phase synthesis method comprises the following steps: performing first mixing on a metal precursor aqueous solution and a ligand aqueous solution, supplementing water to obtain an initial solution, and performing second mixing; then adding a reducing agent aqueous solution to obtain a reaction mixed solution; carrying out first stirring on the reaction mixed solution, concentrating, carrying out second stirring, and supplementing water; and repeating the operations of concentration, secondary stirring and water supplementation to obtain the atom precise metal cluster containing the multilayer ligand spherical shell. The multi-layer ligand spherical shell is adopted to protect the cluster, so that the cluster core can stably exist in an extremely long time without obvious change, and co-production, storage and utilization of related clusters are facilitated; and the metal clusters with uniform size and precise atoms can be directly obtained and have the same molecular weight, so that the post-treatment step can be simplified, and the feasibility of product amplification and application is enhanced.

This invention relates to the field of photocatalytic materials technology, disclosing an atomic-level catalytic material, its preparation method, and its application. The method includes mixing nickel chloride with deionized water to form a solution, adding thiourea and mixing thoroughly to obtain a mixture; ultrasonically treating the mixture and continuously stirring until completely dissolved; drying the dissolved solution in an oven to obtain a solid powder; placing the solid powder in a muffle furnace and calcining it in air, then cooling to obtain the atomic-level catalytic material. This atomic-level catalytic material exhibits a nanoflower-like structure, containing nickel elements distributed in single-atom form, without metal clusters. This invention is applied to the photocatalytic carbon dioxide reduction reaction. The introduction of nickel single atoms promotes the separation and migration of photogenerated charge carriers within the material, causing the carbon dioxide reduction reaction pathway to favor methane production, thus improving the selectivity of the target product in the catalytic reaction.

The application belongs to the technical field of polymer material recycling and catalytic chemistry, and discloses a composite catalyst for PET waste bottle alcoholysis and a preparation method thereof. The composite catalyst is based on biomimetic enzyme engineering and dynamic covalent chemistry strategy, and comprises a binuclear metal cluster active center, a limited microenvironment shell layer and a dynamic covalent network skeleton. The binuclear metal cluster is constructed by zinc / cobalt / manganese ions and a tridentate ligand C9H8N2O4, the shell layer is a polydopamine derived functional polymer, and the skeleton is formed by cross-linking aromatic and aliphatic monomers through borate ester bonds. The application solves the performance degradation problem caused by the instability of the active center of the existing enzyme-like catalyst in industrial circulation application. The catalyst not only has the enzyme-like catalytic characteristics of high activity and high selectivity, but also realizes self-repairing after damage through the built-in multiple dynamic chemical mechanism, thereby providing a new catalytic material with performance and durability for efficient and sustainable chemical recycling of PET waste bottles.

The application belongs to the technical field of electrocatalytic material structure screening and design, and discloses an evaluation method for regulating stability of diatomic catalytic structure by using metal clusters. The method firstly constructs a diatomic catalyst PtTMN6, TM is a transition metal atom, and anchors a Pt4 tetrahedral cluster above the diatomic atom; then, by means of ab initio molecular dynamics simulation, the stability mechanism of the Pt4 cluster to the diatomic atom under high-temperature vacuum environment, hydrogen reduction atmosphere and normal-temperature aqueous solution environment is explored in sequence, so as to screen the most stable catalytic material configuration; the above different systems can exhibit different degrees of stability at high temperature, and the intrinsic factor analysis of the above stability modes by using COHP, differential charge density and Bader charge shows that the PtNi system structure stability is the best. The application firstly introduces the inevitable metal cluster in the experimental preparation into the stability evaluation framework, and solves the problem that the microstructure of the calculation model is disconnected with the actual configuration.

The invention discloses a coordination compound with an olefin coordination trinuclear zirconium cluster structure and a photoresist composition containing the coordination compound. The chemical formula of the coordination compound is [(CpZr) 3 (mu2-OH) 3 (mu3-O) X3], and Cp is a cyclopentadienyl ring; x is a ligand formed after the organic carboxylic acid loses hydrogen atoms on carboxyl, the chemical formula of the organic carboxylic acid is R-COOH, and R is an organic group. The material has a trinuclear metal cluster structure. Compared with a traditional photoresist polymer, the coordination compound disclosed by the invention has a relatively small molecular size, and a better photoetching resolution can be obtained; meanwhile, according to the coordination compound disclosed by the invention, the corrosion resistance can be effectively improved by introducing a cyclopentadienyl ring into a cluster structure, so that the resolution ratio and the characteristic size of a photoetching pattern are improved, and huge application potential is shown.

The application discloses a cluster type self-healing nickel oxyhydroxide / iron-nickel electrode and application thereof in hydrogen production by cracking of saline water, and steps are as follows: under a three-electrode system, a foam metal is used as a working electrode, a cyclic voltammetry method is adopted in a potassium hydroxide solution electrolyte, and a metal cluster dispersion liquid is obtained; under the three-electrode system, a nickel iron / nickel MOF is used as the working electrode, the metal cluster dispersion liquid is used as the electrolyte, the cyclic voltammetry method is adopted, and a target electrode is obtained; and the target electrode is used in hydrogen production by cracking of saline water or a whole reaction of cracking of saline water in the electrolyte obtained by mixing the metal cluster dispersion liquid and the saline water. The target electrode has higher activity and durability and good self-healing performance under the saline water and industrial large current density (500 mA cm ‑2 ).

The invention discloses a protonated Cu-HHTP hydrogen sulfide gas-sensitive material as well as a preparation method and application thereof, and belongs to the technical field of gas sensors and metal organic framework materials, the gas-sensitive material is based on Cu3 (HHTP) 2 (Cu-HHTP), and an exposed copper metal cluster can be used as an adsorption / desorption site of H2S gas molecules, so that the gas-sensitive material can be applied to the field of gas sensors and metal organic framework materials. Therefore, the material has response capability to H2S in an intrinsic state. By carrying out protonation treatment on the material, introduced H < + > provides a richer electron transmission channel while effectively reducing the intrinsic resistance of the material, so that the conduction efficiency of H2S in a material system is remarkably enhanced. In addition, due to the inherent lamellar morphology and porous rod-like structure of Cu3 (HHTP) 2, the material is endowed with the characteristic of high specific surface area. The structural advantage is combined with the protonation design to jointly improve the gas-sensitive property of the material.

The invention relates to a copper nanocluster / fullerol nano composite material, a polymer nonlinear optical thin film and a preparation method and application of the polymer nonlinear optical thin film, and the copper nanocluster / fullerol nano composite material is a nano composite material which is formed by inducing self-assembly of Cu6 and hydroxyl fullerene C60-OH in an aqueous solution through hydrogen bond interaction and has a nano structure. The nonlinear absorption coefficient of the film obtained by adopting the copper nanocluster / fullerol nanocomposite material is as high as 35.5 * 10 < 4 > cm / GW when the laser energy is 1 mu J, and the optical limiting threshold value is as low as 0.008 J / cm < 2 >, so that the film is obviously superior to the existing metal cluster-based material. The method is simple and convenient in process and environment-friendly, and the prepared film has important application value in the fields of laser protection and precision optical equipment safety.

The present invention provides a method for detecting DNA methylation, comprising reacting a DNA of a gene with a metal cluster modified with a molecule having a function for binding DNA, amplifying signals of methylated bases in the DNA by surface-enhanced Raman scattering (SERS) spectroscopy, and detecting the DNA methylation based on the SERS spectrum.

The embodiment of the invention provides a preparation method of a nanopore film, which comprises the following steps: firstly, forming a plurality of nano-scale metal groups on the surface of a substrate, then carrying out plasma etching on the substrate to form nanopores at target positions of the substrate, the target positions comprising the positions where the nano-scale metal groups are located, etching gas adopted in the plasma etching comprises carbon-containing gas and oxygen-containing gas; thus, in the etching process, active free radicals dissociated from the etching gas are enriched at the position of the nanoscale metal group by utilizing the carbon dissolving capacity of the nanoscale metal group, so that the etching rate at the position of the nanoscale metal group is increased, and meanwhile, the oxygen-containing gas destroys a protective film formed by the carbon-containing gas; and further increase of the etching rate at the position of the nanoscale metal group is facilitated, so that the etching rate at the position of the nanoscale metal group is far higher than that at other positions. By adopting the method, the preparation cost of the nanopore film can be reduced.

The invention belongs to the technical field of hydrogen storage material preparation, and provides an in-situ synthesized MOFs hydrogen storage material preparation method and a hydrogen storage material.The preparation method comprises the steps that ZrCl4 and HCl of a certain mass are mixed and stirred at the room temperature for a first set duration at the preset rotating speed; adding a solvent and a ligand into the stirred ZrCl4 and HCl mixed solution, and stirring for a second set time at a preset rotating speed; and putting the mixed solution added with the solvent and the ligand into a polytetrafluoroethylene reaction bottle for heating reaction to obtain the MOFs hydrogen storage material. In UiO-67 synthesis, HCl and ZrCl4 are added in advance to be mixed, so that the ZrCl4 is instantly subjected to Cl <->-assisted pre-hydrolysis at room temperature, metal clusters are generated, a metal framework is locked, reversible Cl <-> is used for occupying sites, and Cl <-> and long-chain 4, 4-diphenyldicarboxylic acid are subjected to precise exchange crystallization subsequently, and the problems of lattice defects and large specific surface area batch difference caused by different nucleation growth rates are thoroughly eliminated; meanwhile, the strong acid environment inhibits Zr < 4 + > hydrolysis precipitation, the single-kettle yield is doubled, and the stability and hydrogen storage performance of the material are guaranteed.

The invention belongs to the technical field of copper-based catalytic materials and water treatment, and particularly relates to a solar thermal field-electro-catalysis synergistic copper-based catalytic material for groundwater pollution remediation, a preparation method, a water treatment device and application. According to the copper-based catalytic material, the high catalytic activity of copper single atoms, the plasmon resonance effect of metal clusters and the excellent H2O activation capacity of a CN substrate are utilized, the photothermal effect is generated through optical excitation, the mass transfer rate of H2O to the substrate is remarkably increased, the dissociation reaction of H2O is promoted, protons and active hydrogen are efficiently generated, and electrochemical hydrodehalogenation and NO3-electrocatalytic reduction are driven. The process effectively solves the problem of reaction kinetics limitation caused by low proton transfer efficiency in the traditional process, greatly accelerates proton transfer and optimizes electron-proton cooperative transfer efficiency, and provides a new way for research and development of groundwater organic-inorganic pollution cooperative treatment and sustainable development technologies. The method has the advantages of remarkable environment and energy conversion.

A method for producing a thermal catalyst according to the present disclosure comprises: a step for heating a liquid containing a plurality of solvents in which metal ions or metal cluster ions and organic ligands are dissolved, and synthesizing a metal organic framework (MOF); a step for combusting the MOF at a temperature of 600°C or lower and converting the MOF into a metal oxide having a (111) plane occupying a larger area than the (100) plane thereof; and a step for causing the metal oxide to support metal nanoparticles.

Aspects of the disclosure relates to articles, compositions, and systems for several optoelectronic applications. In some embodiments, the disclosure relates to the metal organic frameworks (MOF). The MOFs comprise a plurality of metal clusters and a plurality of ligands that are coordinated with the plurality of metal clusters. Some aspects of the disclosure relate to the luminescent MOFs and the various synthetic methods for their preparation. Some aspects also disclose one or more mechanisms unveiled by luminescent MOFs for various OLED applications. In some embodiments, the disclosure relates to the lanthanide-based metal organic frameworks for OLED applications. Some aspects of the disclosure focus on the versatile coordination chemistry shown by the lanthanides along with the structural tunability of MOFs, thereby resulting in exceptional luminescence, high thermal stability and tuneable electronic properties. In some embodiments, the disclosure relates to the enhancement of the luminescent behaviour by the utilization of dual-based lanthanide metal-organic frameworks. Lastly, in some embodiments, the disclosure relates to the zirconium-based and zinc-based MOFs due to their stability and tuneable luminescence behaviour. Thus, the lanthanide-based MOFs play an important role in shaping the future of advanced photonic and optoelectronic devices due to their outstanding characteristic properties and their ability to integrate multiple functionalities within a single framework.

The invention discloses a metal cluster synthesis method, which belongs to the field of electrochemistry and comprises the following steps: in an alkaline electrolyte, taking a pre-prepared graphite flake (D / O-C) containing oxygen-enriched carbon pits as a working electrode, Hg / HgO as a reference electrode and a pre-prepared metal anode as a counter electrode; a metal source is subjected to electro-deposition under the constant-current polarization conditions that the current density is-200mAcm <-2 >, the atmosphere is air, and the reaction environment temperature is the room temperature of 20-25 DEG C to obtain the corresponding metal cluster. According to the invention, cheap, easily available and efficient graphite flakes are used as electrodes, the reaction conditions are mild, heating is not needed, energy is saved, operation is simple, products are easy to separate, and the catalyst is easy to recover. The method has the advantages of being high in controllability, high in efficiency, wide in applicability, easy to achieve automation and large-scale production, environmentally friendly and the like.

The invention relates to the technical field of catalysts, in particular to a ruthenium-based composite nanomaterial and a preparation method and application thereof. The strong interaction between the amorphous ruthenium nanosheet carrier and the cluster can effectively fix cluster atoms and prevent the cluster atoms from migrating and agglomerating in the preparation and reaction processes; the existence of a large number of clusters with high activity and high surface atoms is ensured; and the strong interaction creates a bifunctional catalytic site which does not exist on a single metal. H is adsorbed and dissociated on a Pd site,-OH species are adsorbed on an adjacent defect-rich Ru site, and then the H and the-OH species quickly react at an interface to generate water, so that the efficiency is greatly improved. In addition, the introduction of the amorphous ruthenium nanosheets can promote the oxidation of carbon monoxide on the surface metal clusters, thereby enhancing the anti-poisoning ability of the catalyst.

The invention relates to a TiO2 catalyst loaded with monatomic doped MoS2 as well as a preparation method and application of the TiO2 catalyst, and belongs to the technical field of photocatalysis. The TiO2 catalyst loaded with the monatomic doped MoS2 comprises TiO2 and MoS2 loaded on the surface of the TiO2, and the MoS2 is doped with transition metal monatomic. The transition metal monatomic comprises one of Co and Ni, and the MoS2 has a nanolayer structure. According to the invention, a heterostructure is constructed by using a monometal atom doped precursor, so that the formation of metal clusters is avoided; monatomic doping and heterojunction construction are integrated in one synthesis step, the operation method is simple, and the doping effect can be achieved while the heterojunction is constructed; the prepared TiO2 catalyst loaded with the monatomic doped MoS2 has excellent hydrogen production performance.

The application provides a polynuclear metal organic cage material and a preparation method and application thereof, and the components of the polynuclear metal organic cage material include a metal cluster, a calix[4]arene ligand and a carboxylic acid ligand; the metal ions in the metal cluster include two or more than two kinds. The polynuclear metal organic cage material can not only combine the required enzyme activity as required, but also can synergistically enhance the corresponding enzyme activity by introducing multiple metals with adjustable types and contents in the metal organic cage with a clear structure. The nano-enzyme based on the polynuclear metal organic cage has the characteristics of stable and relatively clear structure, diverse and adjustable enzyme activity, and overcomes the problems of the existing nano-enzyme, such as unclear structure, difficult explanation of structure-activity relationship, difficult quality control in large-scale preparation and single enzyme activity, and provides a new development direction and alternative material for the development of the nano-enzyme, and provides a possible solution for biological medicine, especially inflammation treatment.

The invention discloses a gold nanocluster and a preparation method and application thereof, and belongs to the technical field of metal cluster materials, and the preparation method comprises the following steps: preparing BSA-AuNCs by taking bovine serum albumin as a template and ascorbic acid as a reducing agent through a chemical reduction method; the invention further discloses the gold nanocluster and application of the gold nanocluster in hexavalent chromium fluorescence detection. The method is used for fluorescence and visual detection of hexavalent chromium, is simple and efficient in operation, has high sensitivity and selectivity, and can accurately detect low-concentration hexavalent chromium. And the method has strong anti-interference capability and wide application prospects in the fields of biosensing, medical diagnosis, environmental monitoring and the like, and particularly provides a reliable and effective method for on-site rapid detection of hexavalent chromium.

The invention discloses a silver nano-cluster and a preparation method and application thereof, belongs to the technical field of metal cluster materials, and aims to synthesize Ag NCs by taking PEI as a template and ascorbic acid as a reducing agent. The invention also discloses an application of the silver nanocluster in pH sensing. As the pH sensor, the Ag NCs provided by the invention can show obvious fluorescence intensity and absorbance changes along with the change of acidity, so that the Ag NCs can combine the advantages of high sensitivity of fluorescence detection and simplicity, convenience, rapidness and the like of a colorimetric method, and has more obvious advantages compared with other nanoscale pH sensors.

The invention provides a method for detecting heavy metals in soil, and relates to the field of heavy metal detection. The method for detecting the heavy metals in the soil comprises the following steps: preparing a composite detection electrode, establishing a standard curve, and detecting a sample. The preparation of the composite detection electrode comprises the following steps: preparation of cerium-doped nickel-based metal cluster composite graphene, functional modification and electrode modification. The method for detecting the heavy metals in the soil aims at hexavalent chromium in the soil, does not need to depend on a large precise instrument, is high in detection sensitivity, strong in anti-interference capability, good in stability, simple and convenient to operate and rapid in detection, and can meet the timeliness requirement of rapid screening or emergency monitoring of large-batch samples.

The invention provides a metal cluster containing a multilayer ligand spherical shell, a preparation method of the metal cluster, a high-dispersion metal catalyst and a preparation method and application of the high-dispersion metal catalyst. The preparation method of the metal cluster comprises the following steps: dissolving a metal compound in a mixed solution containing water, alcohols and a ligand, and mixing to obtain a metal precursor solution; sequentially adding a solvent, a protective agent and a reducing agent into the metal precursor solution, mixing, concentrating, stirring, and supplementing the solvent; and repeating the operations of concentrating, stirring and supplementing the solvent to obtain the metal cluster containing the multilayer ligand spherical shell. According to the high-dispersion metal catalyst provided by the invention, the protective agent and the reducing agent are added into the metal precursor solution, so that a metal cluster solution which is larger in molecular size and contains multilayer ligand spherical shell protection is formed, steric hindrance exists among metal clusters, and the resistance of the clusters in the aggregation process is increased; therefore, the effect of controlling the metal dispersity is achieved, and the problems that an existing metal cluster is low in stability and difficult to use are solved.

The invention belongs to the technical field of nano composite materials, and discloses a preparation method of a metal nanocluster confinement covalent organic framework composite.The method comprises the steps that firstly, a nanosecond pulse laser liquid phase is adopted for ablating a metal target material, secondary laser irradiation is conducted on obtained dispersion liquid at low temperature, and a metal nanocluster colloidal solution is prepared; and then, adding an aldehyde precursor and an amine precursor of a covalent organic framework into the colloidal solution, and carrying out mixing, standing polymerization reaction, washing and drying to obtain the final composite material. According to the method, an exogenous chemical reducing agent does not need to be used, and synchronous and uniform confinement packaging of the metal nanoclusters in the covalent organic framework pore channel generation process is achieved through an in-situ polymerization strategy. The prepared composite material has high dispersibility and high activity of the metal cluster and structural integrity and confinement stability of a carrier material, and has a good application prospect in the field of heterogeneous catalysis.

The application belongs to the technical field of catalytic materials, and particularly relates to a supported metal cluster and a preparation method and application thereof. The supported metal cluster is prepared by the following method: immersing a rigid carrier in a noble metal salt solution, and obtaining a rigid carrier loaded with noble metal after drying treatment; and performing heat treatment on the rigid carrier loaded with noble metal in a reducing atmosphere to obtain the supported metal cluster. The supported metal cluster comprises a rigid carrier and a metal cluster loaded on the rigid carrier. The technical scheme can solve the technical problems that it is difficult to prepare a size-controllable and high-purity metal nanocluster by the prior art, and the catalytic performance of the metal nanocluster cannot meet the application requirements. The supported metal cluster prepared by the scheme can be used as a hydrogen oxidation catalyst and has ideal catalytic effect. The preparation process and product performance have high reproducibility, the product structure is easy to control, industrial popularization and application can be easily realized, and the supported metal cluster has a wide application prospect as a new generation of catalyst.

The invention belongs to the technical field of metal passivators, and particularly provides a bismuth-based metal passivator and a preparation method thereof. The preparation method of the bismuth-based metal passivator comprises the following steps that bismuth salt, auxiliary metal salt and organic carboxylic acid react under nitrogen protection, a heteronuclear metal organic cluster compound is obtained, then the heteronuclear metal organic cluster compound reacts with a silane coupling agent under the catalyst condition, and the bismuth-based metal passivator is obtained. The bismuth-based metal passivator prepared by the preparation method can be anchored on the surface of an FCC (fluid catalytic cracking) catalyst through siloxane groups at a low temperature to reduce loss or invalid dispersion of bismuth active components, and can reduce agglomeration of the bismuth active components through auxiliary metals at a high temperature, and meanwhile, the auxiliary metals can also cooperate with the bismuth active components to react with polluted metals, so that the metal passivator can be applied to the FCC catalyst. And a stable new phase is formed, so that polluted metal is effectively passivated.

The invention discloses a preparation method of a photo-thermal regeneration integral adsorbent for low-energy-consumption separation of PFCs / N2, and relates to a preparation method of an adsorbent. The invention aims to solve the problems that the existing MOF material is difficult to directly apply in engineering, the traditional thermal regeneration energy consumption is high, and the gas diffusion of the static powder adsorbent is limited. The method comprises the following steps: 1, pretreatment and surface functionalization; (2) preparing an NH2-MIL-125 (Ti) precursor solution; and 3, preparing the NH2-MIL-125 (Ti) (at) sponge integral type adsorbent. The-NH2 functional group in the ligand can generate a remarkable ligand-to-metal cluster charge transfer effect under the excitation of visible light, and the adsorption selectivity of the material to PFCs is also greatly enhanced. According to the composite material, the adsorption efficiency, the cycle stability and the regeneration economy in the PFCs / N2 mixed gas separation process are remarkably improved through dual synergy of the structure and the function.

The invention belongs to the technical field of adsorption separation materials, and particularly discloses a zinc-based MOF material with triangular prism type metal clusters and a preparation method thereof.The preparation method comprises the following steps that S1, zinc nitrate hexahydrate and 1, 3, 5-tri (4-carboxyl phenyl) benzene are dissolved in N, N-diethyl formamide and deionized water; placing in a reaction bottle, sealing, carrying out heat treatment, and cooling the system to room temperature to obtain colorless needle-like crystals; and washing, activating, and collecting a product to obtain the WUST-4. According to the zinc-based MOF material with the triangular prism type metal clusters and the preparation method of the zinc-based MOF material, a network topology structure based on the triangular prism type Zn4O clusters is formed, and the benzene adsorption performance is shown under low pressure through multiple non-covalent interaction; the key function of solvent-mediated conformational engineering in expanding the structural diversity of MOFs based on deformable SBUs and flexible ligands is disclosed, and a new path is opened up for directional design of novel functional MOFs.

The application discloses a millimeter-level thorium cluster compound single crystal, a synthesis method thereof and application of the millimeter-level thorium cluster compound single crystal in radiation detection and protection, and relates to the technical field of radiation detection and protection. The synthesis method comprises the following process: a hydrophilic thorium salt and 3-pyridine-4-yl-benzoic acid are subjected to a solvothermal reaction in a mixed solvent, and after the reaction is completed, a transparent block crystal is obtained; the transparent block crystal is washed and dried to obtain the millimeter-level thorium cluster compound single crystal; the mixed solvent comprises water, an inorganic acid and an organic solvent. The millimeter-level thorium cluster compound single crystal has the effects of radiation color change, good ray response selectivity, strong radiation stability, strong ray retardation capacity and high reusability. The thorium metal cluster compound single crystal material can be used for detecting X-ray cumulative radiation dose by using the above-mentioned properties, and simultaneously acts as a radiation shielding material to efficiently block ionizing radiation, thereby playing a role in radiation protection.