44results about How to "Improve photothermal efficiency" patented technology

The invention provides a dual-functional nanoparticle, a soluble microneedle carrying the dual-functional nanoparticle and a preparing method and application. The dual-functional nanoparticle is higher in drug loading capacity and has duplex targeting capacity by adding cationic phospholipids and hyaluronic acid for modification. The dual-functional nanoparticle is composed of a polylactic acid-glycolic acid copolymer, vitamin E succinate, cationic phospholipids, a photosensitizer and a chemotherapy drug. The soluble microneedle is composed of a nanoparticle carrying needle and a substrate. The needle is made of polyvinyl alcohol and povidone, and the substrate is made of polyvinylpyrrolidone. Compared with traditional intratumor injection and tail vein injection, the soluble microneedle carrying the dual-functional nanoparticle and prepared through a multi-step centrifugal method has higher photo-thermal and tumor inhibition effects, and an effective scheme is provided for photo-thermal and chemotherapy combined treatment of superficial tumors.

The invention provides a preparation method of a gold-copper sulfide nano material with a hollow core-shell structure and application thereof. The preparation method comprises the following steps of:mixing hexadecyl trimethyl ammonium bromide, chloroauric acid and sodium borohydride, and reacting to obtain gold seed solution; mixing the hexadecyl trimethyl ammonium bromide, silver nitrate, the chloroauric acid, ascorbic acid and the gold seed solution, and standing for growth to obtain a gold-core nano material; mixing polyvinylpyrrolidone, water, copper chloride and the gold-core nano material, and reacting to obtain a first reaction product; reacting the first reaction product with sodium hydroxide, reacting the obtained second reaction product with hydroxylamine hydrochloride, then reacting with sodium sulfide, centrifuging, cleaning obtained precipitates and then drying to obtain the gold-copper sulfide nano material with the hollow core-shell structure. The gold-copper sulfide nano material prepared by the preparation method has the advantages that under the irradiation of near-infrared light, the photothermal property of the copper sulfide is obviously improved by the plasmaresonance energy transfer mechanism of gold nano particles; the photodynamic property is higher; chemotherapeutic drugs also can be carried, and the tumor-cell killing efficiency is higher.

The invention discloses a gold nanoparticle/graphene nano composite material which is prepared by a chemical assembly method for gold nanoparticles and graphene, and a directional freeze-drying methodis used for preparing the gold nanoparticle/graphene nano composite material into a gold nanoparticle/graphene three-dimensional light-heat (steam) conversion material. The material can efficiently convert light energy into heat energy, so that water can be quickly heated into water vapor to finally achieve the water purifying purpose, and therefore, various functions such as seawater desalting,fractionation, sterilization and sewage treatment are realized.

The invention provides a medium-high temperature solar energy selective absorption coating layer and a preparation method thereof. The coating layer is prepared from the following raw materials in parts by weight: 30-40 parts of organosilicone resin, 30-40 parts of a CuCoMnOx functional powder, 10-20 parts of xylene, 2.5-5 parts of a wetting dispersant, 2.5-5 parts of an antisettling agent, 3-5 parts of a leveling agent, 1-3 parts of a defoaming agent and 1-2 parts of a silane coupling agent. The solar energy selective absorption coating layer has the advantages of high absorption rate, high heat conductivity, low radiation rate and high stability, and effectively improves the selective absorption of solar energy by a heat absorbing coating; and the preparation process is simple, the costis low, the equipment requirements are low, the production process is environmentally friendly, and the preparation method is prone to industrialized production and is suitable for large-scale promotion and application.

The invention discloses a preparation method of a novel three-dimensional solar photo-thermal oil-water separator. The preparation method comprises the following steps: cutting foam Cu into a rectangle, and respectively cleaning the rectangular foam Cu with hydrochloric acid, absolute ethyl alcohol, acetone and deionized water for later use; preparing a mixed aqueous solution of sodium hydroxide and ammonium persulfate, soaking the cleaned the rectangular foam Cu in the mixed aqueous solution, taking out the rectangular foam Cu, cleaning the rectangular foam Cu with deionized water, soaking the rectangular foam Cu in sodium sulfide, taking out the rectangular foam Cu, bending the rectangular foam Cu into an inverted U shape, and enabling the inverted U-shaped Cu<x>S/foam Cu to vertically penetrate through a supportable substrate to obtain a Cu<x>S composite photo-thermal film with a three-dimensional hierarchical structure. The Cu<x>S composite photo-thermal film with the three-dimensional hierarchical structure prepared by the method adopts a composite copper-based sulfide material which is low in cost, high in light absorption capacity and high in photo-thermal conversion efficiency, so the manufacturing cost of a device is greatly reduced, and the stability of the device is improved; and photo-thermal efficiency is high, separation performance is good, any electric drive isnot needed, and cost performance is high.

The invention relates to a rotary supporting device for an array type solar optothermal generating collector. One end of a swing arm is fixedly connected with the solar collector, the middle part of the swing arm hinges to an arm stand, the other end of the swing arm hinges to an amplitude driving machine; a bearing supporting wheel is supported on a bearing support, evenly distributed on the rack below a supporting track to support the outer side of the supporting track, a wing plate below the supporting track is equipped with an anti-overturning trolley, the shaft bracket of an anti-overturning trolley is connected with the pedestal of the anti-overturning trolley, the lower end of the pedestal of the anti-overturning trolley is fixed on the bearing support; the middle part on the lower side of a rotating platform is equipped with a locating tube, a ring of locating trolleys are arranged closely on the outside of the locating tube, a trolley support supporting the locating trolley is connected with a locating base, and the locating base is fixed on the rack to form a track locating mechanism. By the device, double angel adjustment of the solar collector can be realized, and solar energy can be collected in an optimal angel.

The invention discloses an ecological health-preservation house for a cold region and an assembly method. An existing greenhouse in the market is low in heat-collecting capacity in an alpine region and large in health preservation difficulty. An ecological health-preservation house for the cold region comprises a base edge, wherein the base edge (1) is rectangular and is connected with a side wall body (13) and a rear wall body (4); the front part of the rear wall body is connected with a health-preservation house body (3); the health-preservation house body is provided with a health-preservation house roof (8) and a health-preservation house front wall; the health-preservation house front wall is provided with a health-preservation house front door (5) and a health-preservation house front window (6); the health-preservation house front wall is provided with a health-preservation house front water curtain wall (9); a side door (2) is arranged at the side part of the health-preservation house body; a health-preservation house inner-layer steel structure frame (7) is arranged between the front side of the base edge and the rear wall body and provided with a heat preservation layer (14); and a glass longitudinal frame (10) and a glass transverse frame (11) are arranged between the front side of the base side and the rear wall body. The application is applied to the ecological health-preservation house for the cold region and the assembly method.

The invention discloses a shape-variable polypeptide-croconic acid cyanine dye conjugate as well as a preparation method and the application thereof. The polypeptide-dye conjugate comprises a hydrophilic functional peptide fragment, a hydrophobic croconic acid cyanine dye fragment and a spacer molecule Ahx for connecting the hydrophilic functional peptide fragment and the hydrophobic dye fragment, the hydrophobic dye segment comprises a morphology adaptation unit capable of realizing morphology transformation, and the polypeptide-dye conjugate can generate morphology transformation through specific recognition or action of a morphology transformation driving unit and the morphology adaptation unit; a polypeptide-croconic acid cyanine dye conjugate is self-assembled under a polar condition to form nanoparticles with a stable structure, the nanoparticles are transformed into nanofiber morphology under the specific action of a morphology transformation driving unit, and the photothermal conversion performance of the croconic acid cyanine dye can be effectively improved through morphology transformation; the synergistic treatment of photothermal and chemotherapy is realized, the tumor inhibition effect is further improved, and a good tumor treatment application prospect is achieved.

The invention discloses a vacuum glass covering plate PVT solar thermal collector. The vacuum glass covering plate PVT solar thermal collector comprises a thermal collector shell, a heat preservationlayer arranged in a cavity of the thermal collector shell, a heat absorbing plate core arranged on the top surface of the heat preservation layer, photovoltaic battery panels arranged on the top surface of the heat absorbing plate core, and a vacuum glass covering plate arranged on the photovoltaic battery panels. A plurality of calandrias are arranged on the bottom surface of the heat absorbing plate core and on the upper part of the heat preservation layer. The vacuum glass covering plate is arranged at an opening of the top of the thermal collector shell and seals the heat preservation layer, the heat absorbing plate core and the photovoltaic battery panels in the cavity of the thermal collector shell. An air interlayer is arranged between the photovoltaic battery panels and the vacuumglass covering plate. The vacuum glass covering plate can improve the heat preservation performance of the thermal collector, protect the thermal collector from freezing at low temperature, and further can lower the temperature of the glass outer surface of the covering plate to reduce heat loss of the surface, so that running reliability and photo-thermal conversion efficiency of the PVT thermalcollector are further improved.

The invention discloses an alternate particle heat absorber and a solar power generation system. A power device is arranged and drives a first heat absorption part and a second heat absorption part to alternately move back and forth between a heat absorption area for receiving solar energy and a heat exchange area in a shell, and particles exchange heat with the first heat absorption part or the second heat absorption part in the heat exchange area. A traditional cavity type particle heat absorber is divided into the process that two heat absorption parts alternately absorb heat and the process that the two heat absorption parts alternately exchange heat with the particles. The two heat absorption parts alternately absorb the heat and the heat exchange process of the particles is located in the shell, so that direct contact between the particles and the external environment is avoided, heat loss is small, and the heat absorption efficiency of the particles in the heat absorption process can be improved.