333 results about "Solar energy conversion" patented technology

A multi-tier, foldable roof includes photovoltaic (PV) cells for transforming solar energy into electrical energy. The roof includes a climate layer configured to close an opening of a structure and also configured to control temperature and humidity of an interior of the structure, a PV screen having plural PV panels, each PV panel configured to include plural PV cells, and an outer layer configured to protect the PV screen from soiling. The climate layer, the PV screen and the outer layer are spaced apart from each other with a given distance (H), and each of the climate layer, the PV screen and the outer layer is configured to change from a retracted state to an expanded state.

The invention discloses a loop heat pipe and water heat storage coupling system and a working method, and belongs to the technical field of heat storage. The system has the modes of light gathering of the light-following trough heat collector, heat conduction of the loop heat pipe, heat storage of the water storage tank and warm water irrigation by using the stored heat water. When sunlight is sufficient in the daytime, the system converts solar energy into sensible heat of water in the heat storage water tank and stores the sensible heat, and the sensible heat is insulated by soil to slow down heat loss; when plants need to be irrigated, warm water in the irrigation water tank is used for irrigation; at night or in the absence of illumination, warm water in the heat storage water tank exchanges heat with air in the greenhouse, so that a lasting and stable heat supply source is provided for the greenhouse. Solar energy collected by the heat collecting groove is efficiently transmitted into the water tank through the loop heat pipe driven by temperature difference to be converted into sensible heat of water to be stored, the sensible heat is used for increasing the greenhouse temperature and irrigating plants when heat is needed at night, and the purposes of efficiently storing heat in the daytime and continuously supplying heat at night are integrally achieved.

The invention discloses a wall-mounted greenhouse solar water circulation heat storage device, and relates to the technical field of water circulation heat storage, the wall-mounted greenhouse solar water circulation heat storage device comprises a shell, a silk screen arranged on the back surface of the inner wall of the shell, an air blowing assembly arranged on the back surface of the shell and used for blowing out heat flow, and a storage battery arranged on the top surface of the shell, the storage battery is used for storing electric energy converted from solar energy, the first concentric-square-shaped frame is arranged in the middle of the interior of the shell, the circulating assembly is arranged in the first concentric-square-shaped frame and used for circularly heating water, the second concentric-square-shaped frame is fixed to the front face of the first concentric-square-shaped frame, and the shaft fan is fixed to the back face of the second concentric-square-shaped frame. The shaft fans are rotationally mounted at the top end and the bottom end of the interior of the second concentric-square-shaped frame correspondingly, airflow heated by the bent pipes is driven through the shaft fans, and therefore the problem that heat distribution in a greenhouse is unbalanced due to the fact that hot air blown out by the water circulation heat storage device is not uniform is solved.

The present invention relates to a salt-resistant water treatment device and a salt-resistant method in a water treatment process. Conventional seawater, high-salt brine, etc. are treated by a photothermal absorber device to obtain freshwater resources. Solar energy is used as the sole energy source, and the absorbed solar energy is converted into thermal energy. A thin layer of water body is efficiently and locally heated to promote its rapid evaporation. The device can prevent device failure caused by salt crystallization, and is energy-saving and environmentally friendly without increasing environmental energy consumption.

The invention discloses a building photovoltaic integration and air conditioning system fusion system comprising a photovoltaic power generation subsystem used for converting solar energy into electric energy; the energy storage subsystem is used for storing and releasing electric energy; the air conditioning subsystem is used for adjusting the indoor environment of the building; the intelligent management and control subsystem is in communication connection with the photovoltaic power generation subsystem, the energy storage subsystem and the air conditioner subsystem and is used for collecting operation data of the subsystems, predicting photovoltaic output and air conditioner loads and executing scene-divided energy scheduling based on a model prediction control algorithm; therefore, the cooperative operation of preferentially supplying photovoltaic electric energy to the air-conditioning subsystem, storing or grid-connecting surplus electric energy, and supplementing energy by the stored energy or the power grid when the energy is insufficient is realized. According to the system, efficient production, storage and intelligent utilization of building energy can be achieved, a novel building energy system with self-generation and self-use, residual electricity storage and coordinated regulation is constructed, and the core problems that an existing building photovoltaic and air conditioning system is poor in collaboration and low in intelligent level are solved.

The invention provides a photovoltaic energy storage system capable of adjusting energy storage, and belongs to the technical field of energy storage. The system comprises a photovoltaic power generation unit, an adjustable energy storage module, a bidirectional converter and an intelligent control unit. The photovoltaic power generation unit is used for converting solar energy into electric energy; the adjustable energy storage module comprises a plurality of groups of battery packs capable of dynamically switching topological structures, and supports charging, discharging, standby mode switching and continuous charging and discharging rate adjustment; and the bidirectional converter realizes bidirectional conversion of direct-current and alternating-current electric energy. The intelligent control unit integrates a prediction model based on LSTM and adaptive fractional order Kalman filtering, an NSGA-III multi-objective optimization framework, a deep reinforcement learning agent and a battery health degree online evaluation module, receives a power grid demand signal, user load data and weather prediction information in real time, and generates an energy storage strategy instruction. All the modules cooperate closely, efficient cooperation of prediction, optimization, control and management is achieved, and the comprehensive performance and economical efficiency of the system are remarkably improved.

The invention relates to the field of composting management systems, and particularly discloses an alpine region aerobic composting system and method based on light storage and energy supply integration, the system comprises a composting barrel main body, the composting barrel main body is internally provided with a heating unit, a temperature sensor and a ventilation pipeline, and the bottom of the composting barrel main body is provided with a discharge port; the photovoltaic power generation module is used for converting solar energy into light energy; the inverter module is electrically connected with the photovoltaic power generation module, has an MPPT (maximum power point tracking) function and is used for converting direct-current electric energy input by the photovoltaic power generation module into first current or second current, and the first current is used for directly supplying power to the heating unit; the sodium ion battery energy storage module is mounted on the side surface of the composting barrel main body and is used for receiving the second current as charging current or outputting third current to supply power to the heating unit. By adopting the technical scheme provided by the invention, the aerobic composting maturity of the alpine region can be improved, and the operation cost is relatively low.

The invention relates to the technical field of photoelectrocatalysis, in particular to a Mn (II) coordination polymer photoelectrode crystalline material and a preparation method and application thereof. The Mn (II) coordination polymer {[Mn2 (H2O) 6 (DODDA)]. 4H2O} n is obtained from an H4 (DODDA) organic ligand and manganese salt through a solvothermal method, an asymmetric unit comprises two Mn (II) ions in different coordination modes, adjacent Mn2 ions are bridged through carboxyl oxygen of the ligand to form straight chains, and two adjacent Mn2 straight chains are further bridged with Mn1 through the H4 (DODDA) ligand to form a transverse trapezoidal one-dimensional chain. A three-dimensional supramolecular structure is formed among the one-dimensional chains through the interaction of a large number of intermolecular hydrogen bonds. The Mn (II) coordination polymer shows better photoelectric property, has the potential of serving as a photoelectrode material, has good optical and electrical characteristics, can be used for constructing an efficient photoelectrocatalysis water decomposition system, and has application prospects in the aspects of photocatalytic hydrogen production, solar energy conversion and the like.

The utility model discloses a shockproof device for a solar energy conversion system, which comprises a shell, a support frame is arranged in the middle of the inner side of the shell, a bracket is arranged above the support frame, and a photovoltaic panel main body is arranged on the upper surface of the bracket; a plurality of shock absorbers are connected to the outer side of the supporting frame in a sliding mode, and the shock absorbers are connected with the support; through cooperation of the air bags and the shock absorbers, when the photovoltaic panel body vibrates or collides, buffering and shock absorption work can be effectively carried out, the situation that the photovoltaic panel body is damaged due to vibration or side face collision is avoided, and the service life of the photovoltaic panel is effectively prolonged.

The invention relates to a device (10) for converting solar energy into electrical energy and thermal energy, the device (10) comprising: a main body (12) having an upper side (14) which can be oriented towards the sun, an lower side (18) which can be oriented towards a building (16), and at least one lateral side (20) which is arranged between the upper side (14) and the lower side (18); a photovoltaic module (24) forming the upper side (14) for converting the solar energy into electrical energy; and a heat exchanger (28) having a fluid chamber (44) through which a thermal fluid (46) can flow, the fluid chamber (44) adjoining the photovoltaic module (24).

The invention discloses a preparation method and application of a ferroelectric enhanced core-shell structure artificial photosynthetic heterojunction catalyst, and belongs to the field of solar energy conversion and photocatalytic degradation. The invention aims to explore the technical problems of low-cost green preparation, high photoelectric conversion efficiency and photocatalytic performance improvement of the photocatalyst. The method comprises the following steps: 1, respectively dissolving bismuth nitrate pentahydrate and iron nitrate nonahydrate in ethylene glycol in sequence, heating in a water bath, stirring, aging, transferring sol into an air dry oven, drying to obtain gel powder, grinding, transferring the powder into a muffle furnace, and calcining to obtain BiFeO3 powder (named as BFO); and 2, dissolving thioacetamide in deionized water, fully stirring, adding the BFO prepared in the step 1, transferring the solution into an ultrasonic cleaning machine, carrying out ultrasonic dispersion, transferring the solution into a reaction kettle, carrying out heating reaction, cooling, washing, and drying to obtain the ferroelectric enhanced Bi2S3 / BFO photocatalyst with a stable heterojunction structure.

The utility model discloses an efficient and energy-saving rolling bearing type ball mill which comprises a bottom plate, a barrel is arranged at the top of the bottom plate, an annular elastic cushion is fixedly connected to an inner cavity of the barrel, a steel ball is arranged at the bottom of an inner cavity of the annular elastic cushion, and seat bodies are movably connected to the two sides of the barrel through bearings. A mounting plate is fixedly connected to the bottom of the seat body, a support is fixedly connected to the bottom of the mounting plate through bolts, the support is fixedly connected with the bottom plate, a motor is arranged on the front face of the barrel body, and a speed reducer is fixedly connected to the output end of the motor. Grinding is carried out through the barrel and the steel balls, the force of the steel balls impacting the barrel is increased through the annular elastic cushion so as to accelerate grinding speed, improve grinding efficiency and reduce consumption of electric energy, meanwhile, solar energy is converted into electric energy through the solar photovoltaic panel, the electric energy is stored in the storage battery to be used by electric equipment, and the purposes of high efficiency and energy saving are achieved. And the use of people is facilitated.

A system (100) for dual-source sustainable energy production in a vehicle (105) is disclosed A slidable solar panel (110) placed on a rooftop of the vehicle convert solar energy into electrical energy. The slidable solar panel includes a plurality of wheels (145) drag the slidable solar panel over a boot space of the vehicle for ensuring standard roof functionality. A plurality of wind fans (115) including a plurality of wind blades (120) capture the wind energy for converting into mechanical energy and at least two generators (130a, 130b) convert the mechanical energy into electrical energy. An energy storage unit (135) store electricity produced from the slidable solar panel and the plurality of wind fans to extend the driving range. A solar inverter (140) converts electrical energy stored into alternating current for use by the vehicle.

1. Name of the product in this design: Photovoltaic panel. 2. Purpose of this design: This design is used for photovoltaic panels that convert solar energy into light energy. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key features: the front view.

The present invention describes a photovoltaic (PV) generator ideally suited for off-grid and remote areas, having a substantially upright structure and comprising a cabinet adapted for grounding on which a plurality of vertically disposed PV panels are mounted. The cabinet accommodates a control circuit for collecting, storing and delivering electrical energy generated by the PV panel. And redundant energy is accumulated in the battery pack and is conveyed as required when the PV panel is insufficient in power supply. The generator is optimized to rated power, ideally for off-grid life (average daily output of 200 Wh / day) and for maintaining home use during seasonal minimum values of solar radiation, and is provided with sufficient PV energy harvesting area to deliver average daily rated power.

The utility model discloses a solar power-to-heat conversion device, which comprises a heater, a solar power generation device and a heating device, the heating medium conveying pipeline is provided with a water pump set and comprises a heating part, a water storage part and a heat dissipation part, the heating part is in butt joint with the heater, the water storage part is in butt joint with a heat preservation water storage tank, and the heat dissipation part is used for being in butt joint with heat dissipation equipment; the problem that the cost is high due to coal burning or direct electric heating is solved through the photovoltaic power generation assembly by means of solar heating, a more money-saving and environment-friendly heating mode is achieved, the heat preservation water storage tank is arranged, hot water can be stored in the heat preservation water storage tank, and it is guaranteed that heating can still be achieved at night; hot water heated in the daytime is stored through the water storage tank and then flows back into the heat dissipation equipment through the water storage part of the heating medium conveying pipeline, the heating medium conveying pipeline can be in butt joint with the water storage tank to enable the hot water to circulate under the condition that no solar energy is converted into electric energy to supply power to the heater at night, and heating at night is guaranteed.

The invention provides a wireless photochargeable electrochemical luminescence system and device and preparation and application thereof, the system comprises cyano-functionalized CN-K. The device comprises a detachable top camera obscura, a bottom unit, a reactor (containing a functionalized carbon nitride solution integrating solar energy conversion and storage and electrochemical luminescence capability) and a signal acquisition unit. Functionalized carbon nitride is utilized to realize an integrated process of photocharging, electron storage and self-luminescence: the material firstly absorbs sunlight to accumulate long-life electrons, then the accumulated electrons are used as a unique driving force to trigger a surface electrochemical luminescence reaction to realize self-luminescence, and the whole process can be monitored in real time by a signal acquisition unit; a detection signal can be read in real time through equipment such as a smart phone. The wireless self-driven electrochemical light-emitting device has the potential of multi-scene on-site instant detection, and can be applied to visual rapid screening of pollutants of outdoor water.

The invention discloses a rural ecological toilet which comprises a toilet body, a solar power generation device, a water supply device and a fermentation tank. The solar power generation device comprises a solar cell panel and a storage battery; the water supply device comprises a water collecting tank, a first water pump and a reservoir; a water collecting groove is formed in the peripheral edge of the top of the toilet body; the water collecting tank is communicated with the water collecting tank through a water collecting pipe; the water collecting tank communicates with the water storage pond through a first connecting pipe. The first water pump communicates with the water collecting tank through a second connecting pipe; a squatting pan is arranged in the toilet body; the water collecting tank is communicated with the squatting pan through a flushing pipe; and the squatting pan is communicated with the fermentation tank through a blow-off pipe. Solar energy is converted into electric energy through the solar power generation device to supply power to the whole toilet, meanwhile, rainwater is collected through the water supply system and used for flushing excrement, the excrement is discharged into the fermentation tank through the blow-off pipe to be fermented, and therefore the toilet environment can be effectively improved; and the purposes of energy conservation, environmental protection and resource reutilization are achieved.

The utility model provides a bus station, which comprises a photovoltaic array, an energy storage device, an intelligent sensing device and a lighting device, and is characterized in that the photovoltaic array is used for converting solar energy into electric energy and storing the electric energy in the energy storage device; the intelligent sensing device is used for controlling on-off and brightness of the lighting device, the intelligent sensing device comprises at least one of a light sensing switch and an infrared sensing switch, and the light sensing switch is used for controlling on-off of the lighting device according to surrounding illumination brightness; the infrared induction switch is used for inducting whether a person is near the bus station or not and adjusting the brightness of the lighting device according to the inducted result. In this way, the problems of high electrical load and resource waste of the bus station are solved, and the brightness of the lighting device can be intelligently adjusted, so that effective management and distribution of electric power are ensured, the problem of resource waste is effectively solved, and the resource utilization rate is improved.

The application discloses a ship gangway guardrail welding device, which comprises a storage structure, a welding structure and a manual welding structure fixed on the storage structure, the manual welding structure is located on the right side of the welding structure, an energy-saving structure and a moving assembly are inlaid in the storage structure, the moving assembly is located on the lower side of the energy-saving structure, a pulling assembly is fixed on the rear side of the storage structure, the moving storage assembly comprises a limiting plate, a motor box is fixed on the limiting plate, a motor in the motor box drives a first gear to rotate and drives a first baffle on a first rack to slide in a sliding groove, a first sealing cover is rotatably connected to the first baffle, the energy-saving structure comprises a third storage box, a solar energy assembly is fixed on the third storage box, and the third storage box is sealingly connected with an automatic sealing assembly, the ship gangway guardrail welding device is moved as a whole, a rotary manipulator is rotated according to needs to realize automatic welding or manual welding through a manual welding gun, harmful gas generated during welding is treated, and solar energy is converted into electric energy through the energy-saving structure when the device is not working.

1. The name of the design product: energy storage inverter integrated machine (FA1). 2. The use of the design product: a comprehensive device integrating photovoltaic power generation, energy storage and inverter functions. For converting solar energy into electrical energy, and storing excess electrical energy in a battery for use when needed, also with inverter function, converting DC into AC, supplying household or industrial equipment for use. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a distributed photovoltaic system and a power grid system, and relates to the technical field of photovoltaic power generation, the distributed photovoltaic system comprises a plurality of dispersedly arranged photovoltaic units, a confluence device, a boost grid-connected device and a secondary equipment prefabricated cabin, and each photovoltaic unit can convert solar energy into electric energy; the confluence device is connected with each photovoltaic unit through a wire, and the confluence device is used for collecting the electric energy generated by the plurality of dispersedly arranged photovoltaic units; the boosting grid-connected device is used for boosting low-voltage electric energy to high voltage and connecting the electric energy to a high-voltage power grid, the boosting grid-connected device comprises a primary equipment prefabricated cabin, and the convergence device is connected with the primary equipment prefabricated cabin; and the secondary equipment prefabricated cabin is electrically connected with the convergence device and the primary equipment prefabricated cabin. According to the technical scheme, the problem that in an existing rural distributed photovoltaic power station, the total installation amount is limited by the capacity of an existing transformer, and consequently a large number of photovoltaic panels cannot be continuously installed in the village can be solved.

The invention provides a light energy-electric energy-chemical energy coupling coal-fired unit system and an operation system. The system comprises a coal-fired power generation subsystem, a photovoltaic-thermochemistry subsystem and a Kalina circulation subsystem. The coal-fired power generation subsystem is connected with the photovoltaic-thermochemistry subsystem, and the photovoltaic-thermochemistry subsystem is connected with the Kalina circulation subsystem; the coal-fired power generation subsystem is used for basic power generation and peak regulation of the whole system; the photovoltaic-thermochemistry subsystem is used for converting solar energy into electric energy through a photovoltaic device and driving a reversible thermochemistry device based on a calcium-based compound by using the electric energy, so that conversion and storage of electric energy-heat energy-chemical energy are realized; the Kalina circulation subsystem is used for waste heat utilization of thermal chemical reaction products. The heat storage / release temperature is matched with the coal-fired system through thermochemical reaction pressure regulation and control, dynamic regulation of the Kalina cycle working medium concentration is combined, the irreversible loss of heat transfer is remarkably reduced, and the comprehensive energy utilization efficiency is improved.

1. Name of the designed product: photovoltaic module. 2. Use of the designed product: for converting solar energy into electric energy. 3. Design points of the designed product: in the shape of the product. 4. Picture or photo best indicating the design points: perspective view 2.

The application discloses a solar energy conversion system and an operation method thereof, and belongs to the technical field of renewable energy utilization. The system comprises a hydrogen and oxygen preparation and storage unit, a combustion and power generation unit and a flue gas treatment unit. A solar light condensation high-temperature heat collector supplies heat for a hydrogen preparation device to decompose water to prepare hydrogen and oxygen, the hydrogen and oxygen are stored after being cooled and compressed, and are sent into a combustion chamber to be mixed with circulating carbon dioxide to realize oxygen-rich combustion, supercritical carbon dioxide-water vapor flue gas is generated to drive a gas turbine to generate power, the flue gas is subjected to waste heat recovery and condensation separation, water is returned to the hydrogen preparation in a closed loop, and the pressurized carbon dioxide is branched to control the temperature of the combustion chamber and the gas turbine, so that full circulation of the working medium and cascade heat exchange are realized. The solar hydrogen preparation and supercritical carbon dioxide circulation are deeply integrated, energy utilization rate is high, and operation is stable. The application can solve problems of intermittency of solar energy, low efficiency of a traditional system, large thermal pollution and the like, is energy-saving and environment-friendly, and is good in economy.

According to the mobile photovoltaic power storage water conservancy management and control integrated system provided by the invention, the photovoltaic power storage module, the water pumping irrigation module, the flood prevention and drainage module and the water quality monitoring module are all arranged on the crawler-type mobile platform, so that the technical problems of insufficient geographical adaptability and deployment flexibility of a water conservancy management and control system in the prior art are solved; the water pumping irrigation module, the flood prevention drainage module and the water quality monitoring module are all integrated on the crawler-type mobile platform, different working modes can be selected according to actual conditions, the problem that in the prior art, a water conservancy management and control system is single in function is solved, solar energy is converted into electric energy through the photovoltaic power storage module, and the water conservancy management and control system is convenient to use. Self-sufficiency of partial energy is realized, dependence on a power grid and diesel oil is reduced, and the technical problem of high operation cost of a water conservancy management and control system in the prior art is solved.

The utility model discloses an energy-saving fluid flow detection device which comprises a filtering structure, the filtering structure is communicated with a detection structure, the detection structure is communicated with an energy-saving structure, the filtering structure comprises a water inlet pipe, a filtering assembly is detachably installed on the water inlet pipe, the filtering assembly is communicated with a first water outlet pipe, and the filtering assembly comprises a flange plate. According to the energy-saving fluid flow detection device, impurity treatment is conducted on fluid entering the detection pipe through the arrangement of the flange plate, the filter pipe and the filter basket, large-particle impurities on the ice surface collide with the micro-power-consumption sensing module, and the service life of the micro-power-consumption sensing module is affected; through the arrangement of the supporting plate, the supporting rod and the energy-saving photovoltaic panel, under the field passive environment, solar energy is converted into electric energy to be stored in the storage battery body, the surface of the energy-saving photovoltaic panel is automatically cleaned through the arrangement of the top plate, the high-pressure spray head, the water conveying pipe, the water suction pump and the water storage pipe, and it is ensured that the energy-saving photovoltaic panel is in normal contact with sunlight.

The invention provides a centralized energy storage solar direct current street lamp system which comprises a photovoltaic power generation unit used for converting solar energy into direct current electric energy; the LED lighting unit is used for providing lighting; the energy storage management unit is used for managing charging and discharging of the energy storage battery; the current transformation management unit is used for carrying out bidirectional electric energy conversion between a direct current power grid and an alternating current power grid; the micro-grid control unit is used for monitoring and controlling the operation of the energy storage management unit and the current transformation management unit; through centralized energy storage and a direct-current micro-grid architecture, efficient convergence, storage and accurate distribution of distributed photovoltaic energy are realized, the problems of low efficiency, difficult maintenance and poor reliability of a traditional solar street lamp system are solved, loss caused by multiple times of alternating-current and direct-current conversion is eliminated through a full-direct-current voltage matching design, the system energy efficiency is further improved, and the system cost is reduced. Intelligent management enhances the adaptability and economical efficiency of the system.

The utility model discloses an energy-saving environment-friendly agricultural planting greenhouse, which relates to the technical field of agricultural planting and comprises a greenhouse body, a movable door is movably hinged to the front end of the greenhouse body, a ventilation window is fixedly mounted on the upper side of the front end of the greenhouse body, an energy-saving mechanism is mounted in the greenhouse body, and a water storage mechanism is mounted at the rear end of the greenhouse body. The energy-saving mechanism comprises a mounting base, the bottom end of the mounting base is fixedly connected with the upper left side of the interior of the greenhouse, a storage battery is fixedly mounted at the upper end of the mounting base, supports are symmetrically and fixedly mounted on the outer portion of the upper end of the greenhouse, and solar panels are mounted on the upper sides of the supports. Through cooperation of the installation base, the storage battery, the support, the solar panel and the illuminating lamp, solar energy can be converted into electric energy through the solar panel and transmitted to the storage battery to be stored, then the storage battery is used for supplying power to a needed electric device, and therefore a large amount of energy can be saved, and the using effect of the greenhouse is improved.

The invention discloses a preparation method of an MXene modified TiO2 / Cd0. 3Zn0. 7S heterojunction composite photocatalyst for hydrogen production through visible light photolysis of water. The MXene modified TiO2 / Cd0. 3Zn0. 7S heterojunction composite photocatalyst is used for hydrogen production through visible light photolysis of water. The preparation method comprises the following steps: etching an MAX phase (Ti3AlC2) by hydrofluoric acid to prepare Ti3C2 MXene, growing TiO2 nanosheets in situ by utilizing a hydrothermal oxidation technology, anchoring the TiO2 nanosheets on the surface of the Ti3C2 MXene to form a Ti3C2-coated TiO2 composite material, and heating and loading Cd0. 3Zn0. 7S nanoparticles in an oil bath to prepare the final composite photocatalyst. The preparation method is simple, mild in condition and low in cost, and a surfactant or a template agent does not need to be added. The prepared composite photocatalyst has excellent photocatalytic water decomposition hydrogen production performance, the hydrogen evolution rate reaches up to 48.92 mmol.g <-1 >. H <-1 > and is improved by 43.67 times and 99.83 times respectively compared with pure Cd0. 3Zn0. 7S and Ti3C2 at TiO2, the cycling stability is good, the activity is kept at 95% or above after four times of cycling, and the apparent quantum efficiency at 420 nm reaches 74.6%. The invention provides a new thought for a high-efficiency photocatalytic system, and is suitable for the fields of solar energy conversion and environment purification.