22results about How to "High photothermal conversion efficiency" patented technology

The invention relates to the technical field of drying, and discloses a solar heat collection tube heating and drying device and a tube row manufacturing method thereof.The solar heat collection tube heating and drying device comprises a first rack, and a first heat collection module is arranged on an inclined mounting platform formed by a first-stage step and a second-stage step of the first rack; a drying cavity defined by first steel plates is installed on the outer wall of the three-stage step of the first rack, and a first partition plate is arranged in the drying cavity. A second partition is arranged on the top surface of the first partition, a third partition is arranged on the side wall of the second partition, and an air delivery pipe is arranged between the third partition and the first partition; an air inlet shutter is mounted on the first steel plate, a fan opposite to the air inlet shutter is mounted on the second partition plate, and an exhaust shutter is mounted on the first steel plate; a supporting beam located above the third partition plate is arranged on the first rack, a footstand is arranged on the supporting beam, and a drying bin used for drying corn is placed on the footstand; according to the device, the solar energy utilization rate is increased through the heat collection structure, heat collection and drying chambers are reasonably partitioned, the airflow circulation path is clear, and stable drying of corn is achieved.

The utility model provides a heliostat mirror frame, include: main girder, set up first support layer on main girder, the second support layer who is configured for bearing sub mirror, second support layer includes a plurality of second support frame interval setting on first support layer, and at least two second support frames form a sub mirror mounting area for bearing sub mirror, at least part second support frame's length is different, and / or, at least part second support frame's extension direction is different to form different sub mirror mounting area. The utility model provides technical scheme to design to a plurality of second support frame length and extension direction, make a plurality of sub mirror mounting area formed by a plurality of second support frame have at least part difference, and then make a plurality of sub mirror mounting area can be according to actual demand and splice the heliostat of different contour and install splice out different shape contour, be favorable to according to actual environment and other factors more accurately design and control the focusing effect of heliostat, improve photo-thermal conversion efficiency.

The application belongs to the technical field of biological medical materials, and discloses a polydopamine modified modified nano-graphyne and a preparation method and application thereof. In the method, the polydopamine coating is combined with the nano-graphyne for the first time to construct a GDY@PDA composite system, and the core defects of the blocky graphyne, such as easy agglomeration, poor water solubility and insufficient biocompatibility, are solved. The graphyne-based material is applied to the near-infrared two-region photothermal regulation of neural cell calcium influx for the first time, the calcium ion channel is activated through the local thermal effect of the material, and precise, remote and reversible calcium influx regulation is realized; the limitation that the traditional biocompatibility modification is easy to fall off and difficult to functionalize is broken through, the polydopamine modification makes the material have both photothermal efficiency and biological safety, and the application of the graphyne in the treatment of neural diseases (such as neural cell injury repair) is expanded.

This invention discloses a sea urchin-shaped oxygen-rich vacancy O vac This paper describes a CuO@ZIF-8 core-shell structured photothermal catalyst, its preparation method, and its application, belonging to the fields of photocatalytic materials and artificial nitrogen fixation technology. The technical solution is as follows: the catalyst has a core-shell structure, with the core being urchin-shaped copper oxide (CuO) microspheres. These microspheres are assembled from radially arranged one-dimensional nanoneedles or nanospikes, and the surface of the core contains oxygen vacancies (O). vac The shell is an in-situ grown ultrathin zeolite imidazole ester framework material, ZIF-8, which possesses hydrophobic and molecular diffusion channel properties. This invention also constructs a matching biomimetic three-phase interface photothermal reaction system. Through the synergy of a hydrophilic substrate supplying water and a hydrophobic, permeable shell, it achieves a balance between gas diffusion and proton supply, reducing the submersion of active sites by liquid water and the occurrence of side reactions. This invention has significant advantages such as high photothermal conversion efficiency, mild preparation conditions, and high gas-liquid interface mass transfer efficiency.

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.

This invention relates to a method for constructing a curved solar concentrator with uniform light reception on the absorber surface, belonging to the field of solar photovoltaic and photothermal technology. This invention utilizes differential geometry theory to construct a system of first-order nonlinear differential equations relating the concentrator's reflective surface (x and y coordinates) to the radius r of the circular absorber. The reflective surface profile parameters are obtained through iterative solutions. A discrete point lattice is obtained, with the spatial straight-line distance and maximum deviation between adjacent iteration coordinate points not exceeding 2 mm as the convergence criterion. A curved concentrator model is then generated through spline curve fitting. The energy flux density distribution on the absorber surface is obtained using the ray tracing software Tracepro, and the uniformity of the energy flux distribution is verified using a relative deviation not exceeding ±10% of the average value. This invention achieves uniform distribution of incident solar radiation on the absorber surface, eliminates local hot spots, significantly reduces thermal stress gradients, and improves the photothermal conversion efficiency and operational stability of the solar concentrator system.

The invention relates to the technical field of biomedical materials, in particular to a gadolinium oxide-based nano preparation as well as a preparation method and application thereof. The preparation method of the preparation comprises the following steps: preparing gadolinium oxide nanoparticles through a hydrothermal method and amination modification, and dissolving the gadolinium oxide nanoparticles in deionized water to obtain a contrast agent solution; dropwise adding the nano-particles into a gold source solution under stirring at a certain temperature to obtain nano-particles with core-shell structures; and finally, slowly adding the synthesized dispersant solution of the water-soluble polymer into the core-shell nanoparticle solution to obtain a gadolinium oxide-based nano preparation solution. And performing post-treatment such as dialysis, freeze drying and the like to obtain the core-shell structure nanoparticles based on the gadolinium oxide nano preparation. The invention relates to a gadolinium oxide-based nano preparation for cancer diagnosis and treatment, gadolinium oxide is used as an MRI contrast agent, and a gold shell is grown on the periphery of the gadolinium oxide as a photo-thermal preparation; the hydrogel has the characteristics of good biocompatibility and the like, and has an important practical prospect in the field of preparation of diagnosis and treatment integrated medicines.

This invention relates to the field of materials technology, and more particularly to a 3D-printed, internally hollowed-cone solar interface evaporator with directional salt deposition function, its preparation method, and its application. The invention includes step 1: three-dimensional model construction; step 2: substrate surface pretreatment and chemical activation; and step 3: hydrothermal preparation of a Co-Bi-S coating. This invention uses a 3D-printed porous, internally hollowed-cone resin device as a substrate, and grows a Co-Bi-S coating in situ on its surface using a hydrothermal method. This coating exhibits both excellent photothermal conversion performance and corrosion resistance. The evaporator structure is designed as a porous, internally hollowed-cone shape, which provides a larger evaporation area, stronger light capture and focusing capabilities, and can achieve higher evaporation temperatures and directional salt deposition effects. The prepared solar interface evaporator exhibits excellent photothermal conversion performance and water evaporation efficiency, and also demonstrates good structural stability and corrosion resistance. This solves the technical problems of low photothermal conversion efficiency and poor stability in high-salt environments inherent in traditional solar evaporators, making it suitable for applications such as seawater desalination.

A photothermal converter based on a hemispherical Bi₂Se₃ superstructure belongs to the field of solar energy technology and applications. The stacked structure from bottom to top consists of: a metal substrate, a silica microsphere mask layer, and a Bi₂Se₃ thin film layer. The metal substrate is made of materials such as titanium and has a thickness greater than the skin depth (≥100 nm). The silica microsphere mask layer forms a close-packed array through self-assembly, with microspheres having a diameter of 200 nm. The Bi₂Se₃ thin film is prepared through conformal deposition, with a thickness ranging from several nanometers to hundreds of nanometers. This device utilizes the bulk-surface state synergistic effect of the topological insulator Bi₂Se₃, combined with Mie resonance excited by a hemispherical superstructure and plasmon coupling, to achieve an average high absorption rate of 97% in the 0.3–2.5 μm band and an emissivity as low as 0.07 in the 2.5–25 μm band. It exhibits stable absorption characteristics over a wide incident angle (0°–60°) and can be prepared in a low-cost and controllable manner through self-assembled microsphere masks and magnetron sputtering technology, providing a feasible solution for high-performance solar thermal conversion systems.

The invention discloses a composite material for continuous lithium extraction based on photo-thermal synergy, a supercooled continuous lithium extraction method and application, and belongs to the technical field of salt lake lithium extraction and heat energy management. According to the prepared floating type photo-thermal synergistic lithium extraction composite material, through the design of a three-layer composite structure, the synergistic function of temperature regulation and control, lithium ion adsorption and structure supporting is achieved, the problems that a traditional lithium adsorption material is prone to sedimentation and usually needs an additional supporting structure are solved, the density is smaller than that of water, and the composite material can stably float on the surface of salt lake brine; and large-scale deployment and recovery are facilitated.

The invention belongs to the technical field of photo-thermal conversion materials, and particularly relates to a solar photo-thermal conversion material, a preparation method and application, the material comprises 2-5 parts of biomass, 2-10 parts of copper chloride, 5-10 parts of nano ceramic particles, 5-20 parts of 3-aminopropyltriethoxysilane, 10-20 parts of hydroxypropyl methyl cellulose, and 5-20 parts of felt cloth. Compared with the prior art, the solar photo-thermal conversion material, the preparation method and the application provided by the invention have the advantages that light reflection can be effectively inhibited, and the absorbance is improved; in addition, the biomass is enhanced through the kaolin nano ceramic particles, and the photothermal conversion efficiency can still be kept at a high level under the condition that the solar illumination intensity is increased.

The utility model belongs to solar heating technology field, specifically disclose a box body light -concentrating type solar medium temperature heat collector, the utility model discloses a sealed box body of one side glass cover, the bottom and the side surface of box body are equipped with heat preservation layer, be equipped with upper flow collecting pipe and lower flow collecting pipe in the box body, be equipped with at least two fin heat absorption unit between heat preservation layer and glass cover, the both ends of fin heat absorption unit are connected with the upper flow collecting pipe and lower flow collecting pipe of the intercommunication box body respectively, fin heat absorption unit includes fin adsorption pipe and reflector, and fin adsorption pipe sets up at the light -concentration of reflector surface. The utility model discloses the synergistic effect of metal light -concentrating structure and straight -through type flow channel design, can realize the stable output of medium temperature, improve the pressure intensity of system output, improved the reliability of medium temperature pressure bearing. The utility model can be widely applied to the light -heat conversion field of solar energy.

The application provides a monochromatic LED light source photothermal reaction device based on an optical matrix, relates to the technical field of photothermal reaction equipment, and solves one of the technical problems of low light energy utilization rate and limited reaction process of a traditional reaction device. The reaction device comprises a light collection module. The light collection module comprises a PCB and a light collection unit. A plurality of light collection units are arranged in an array on the PCB. The light collection module is used for providing a light source, reflecting and collecting scattered light sources, collimating light paths, and gathering stable light spots with concentrated and uniformly distributed energy density, so as to improve photothermal conversion and reaction efficiency.

This invention relates to the field of new energy materials technology, and discloses a self-assembled molecular material and its applications. The self-assembled molecular material has the structure shown in Formula I: Formula I; wherein A is a substituted or unsubstituted carbazole group, B is a substituted or unsubstituted fluorene group, A' is a substituted or unsubstituted carbazole group or a substituted or unsubstituted triphenylamine group; and D is an anchoring group. This self-assembled molecular material simultaneously includes a fluorene structure, a carbazole structure, and multiple anchoring groups. The synergistic interaction of these groups and structures significantly enhances the thermal stability and film-forming properties of the self-assembled molecular material, resulting in solar cells containing this self-assembled molecular material exhibiting excellent photothermal conversion efficiency and stability.

The invention relates to the technical field of solar water heaters, in particular to an efficient and energy-saving solar water heater with an anti-freezing structure, which comprises a solar water heater body, and the solar water heater body comprises a mounting frame, a hot water tank and a heat collector body; the anti-freezing film is arranged below the heat collector body in parallel and is in a rolled state when not unfolded; according to the efficient energy-saving solar water heater with the anti-freezing structure, the heat collector body can be effectively prevented from being blocked by accumulated snow and cracked by an ice layer through covering protection of the anti-freezing film, and then the purposes of guaranteeing the photo-thermal conversion efficiency, prolonging the service life of equipment and reducing the maintenance cost are achieved; the heat tracing band and the anti-freezing film are synchronously wound and unwound, the anti-freezing function is achieved, meanwhile, the influence on the light receiving amount of the heat collector is reduced, and the anti-freezing and heat collecting effects are considered; the light compensation assembly can supplement illumination of the heat collector, light receiving loss caused by the anti-freezing film, the winding and unwinding assembly and the protection box is further made up, and therefore the photothermal conversion efficiency is further improved.

The invention belongs to the technical field of solar seawater desalination, and particularly relates to a charcoal-based hydrogel evaporator, a preparation method and application, and the charcoal-based hydrogel evaporator is prepared from the following components: gellan gum, Siberian iris and polyethylene glycol. Compared with the prior art, the charcoal-based hydrogel evaporator for solar seawater desalination (SSD) is prepared by using a simple mixing method, the charcoal-based hydrogel evaporator is prepared by calcining Siberian iris wastes at high temperature, and the carbonized Siberian iris is used for reducing evaporation heat and increasing the evaporation rate of the Siberian iris. Meanwhile, the original network structure of the SGG is destroyed by adding PEG, so that a new pore structure is formed, and faster movement of water molecules is facilitated. Under the same reaction parameters, the evaporation rate is obviously improved by 0.21 kg.m <-2 >. H <-1 > compared with that of an evaporator without PEG, and the photothermal conversion efficiency is improved by 11.3%.

This invention discloses a method for preparing and applying right-handed molybdenum-doped carbon dots. The method involves using D-tartaric acid, ethylenediamine, and molybdenum salt as raw materials, followed by hydrothermal reaction, centrifugation, dialysis, and lyophilization to obtain D-Mo-CDs. These carbon quantum dots exhibit selective response to circularly polarized light; D-Mo-CDs are specifically activated under left-handed circularly polarized light irradiation, achieving a photothermal conversion efficiency of 51.2%, and possessing highly efficient reactive oxygen species generation capabilities, enabling photodynamic-photothermal synergistic antibacterial effects. This invention also discloses the application of these carbon quantum dots in the preparation of spatiotemporally precise antibacterial materials and in medical devices or dressings for treating bacterial infected wounds. This material exhibits high biocompatibility, significant in vitro antibacterial effects, and promotes wound healing in vivo, providing a novel integrated solution for the treatment of infected wounds.

A method for preparing a 2D evaporation membrane constructed from a self-assembled two-dimensional superlattice of molybdate-heteropolyblue subnanowires and its application are disclosed. The method involves dissolving phosphomolybdic acid and transition metal chlorides in a mixed solvent system of oleic acid, oleylamine, and ethanol, stirring at room temperature; then pouring the solution into a stainless steel high-pressure reactor lined with PTFE, reacting, cooling to room temperature, and collecting the solid product by centrifugation; washing, and vacuum drying overnight to obtain molybdate-heteropolyblue powder; dispersing the molybdate-heteropolyblue powder in a cyclohexane-ethanol mixed solution, heating the resulting dispersion, filtering it through a hydrophilic filter membrane to form a membrane, and air-drying it overnight to obtain the 2D evaporation membrane constructed from the molybdate-heteropolyblue two-dimensional superlattice. The advantages are: the nanowire structure of this evaporation membrane provides long-range ordered nanoscale water transport channels, and its internal hydrophilic and external hydrophobic properties enhance water management capabilities, thereby promoting efficient water transport and evaporation, enabling efficient and stable solar thermal seawater evaporation.

This invention discloses a method for preparing a thiazolium-[5,4-d]thiazolium covalent triazine polymer material and its application, belonging to the technical field of porous organic polymer materials. The preparation method of the thiazolium-[5,4-d]thiazolium covalent triazine polymer material of this invention is as follows: A monomer and anhydrous zinc chloride are uniformly mixed and transferred to a glass tube. After cooling with liquid nitrogen, the mixture is melt-sealed under vacuum. The sealed glass tube is then transferred to a muffle furnace for heating and reaction to obtain the product. After the reaction, the product is removed and successively ground, washed, and vacuum-dried to obtain the thiazolium-[5,4-d]thiazolium covalent triazine polymer material. The thiazolium-[5,4-d]thiazolium covalent triazine polymer material of this invention has a simple synthesis, high yield, good stability, low spin density free radicals, and hydrophilicity, making it suitable as a high-performance photothermal conversion material with excellent application prospects in the field of solar water evaporation.

This invention relates to a pyrrolopyrrole organic small molecule photothermal material with high photothermal conversion efficiency, its preparation method, and its application. The invention belongs to the field of organic small molecule photothermal materials. It aims to solve the problems of poor thermal stability and low photothermal conversion efficiency in existing photothermal materials. Preparation method: BrDPPBr, R-boronate, potassium carbonate, and a high-boiling-point solvent are mixed, then heated, and a phosphine compound is added. The mixture is heated and stirred continuously. After the reaction, it is cooled to room temperature, and then pure water is added to precipitate the solid. The solid is then recrystallized and purified to obtain the pyrrolopyrrole organic small molecule photothermal material. Application: It is used for water evaporation. This invention relates to pyrrolopyrrole organic small molecule photothermal materials with high photothermal conversion efficiency, their preparation, and their applications.

The invention discloses a linear Fresnel type heat collection field reflector parameter optimization design method and system. The method comprises the steps that a two-dimensional space coordinate system is established according to the arrangement direction of a linear Fresnel type heat collection field and the axis direction of a reflector; based on the two-dimensional space coordinate system, a linear Fresnel type heat collection field reflector parameter optimization model is constructed, constraint conditions are set, and the linear Fresnel type heat collection field reflector parameter optimization model takes annual average reflector field efficiency maximization as a target function; and solving the linear Fresnel heat collection field reflector parameter optimization model by combining a particle swarm algorithm and a genetic algorithm so as to determine reflector parameters which maximize annual average reflector field efficiency. By means of the scheme, a unified geometric reference is provided for optimization by establishing the accurate two-dimensional space coordinate system, the parameter optimization model with annual average mirror field efficiency maximization as the core target is established, and the long-term operation performance of the heat collection field can be comprehensively considered.

The invention belongs to the technical field of energy utilization, and discloses a photo-thermal coupling energy storage and heat insulation synergistic outer wall structure which comprises a photo-thermal energy storage roof unit and a photo-thermal energy storage wall body unit. Each roof unit is formed by assembling a plurality of groups of phase-change tile bodies and is provided with an arc-shaped plate tile ridge and a circular cylindrical tile ridge structure, and the phase-change tile bodies are mounted or dismounted through locking pins and limiting hole assemblies; each wall unit is of a sliding way and latch self-locking structure and is formed by modular assembly of latch plates and tooth shell plates, and early-stage rapid installation and later-stage maintenance are facilitated. Hollow compartments are arranged in the roof units and the wall units and used for being filled with photo-thermal coupling energy storage and heat insulation synergistic flexible phase change plates, the overall design has the photo-thermal conversion function, the energy storage function and the heat insulation function, and the solar greenhouse has the advantages of being stable in structure, capable of saving energy, efficient, easy to maintain and the like and has important significance on promoting energy conservation and consumption reduction of the solar greenhouse.