Device for producing hydrogen through photothermal coupling of solar energy based on frequency division technology

A device for producing hydrogen through photothermal coupling of solar energy based on a frequency division technology, comprising a circular arc-shaped secondary reflection element, a photothermal coupling reactor, a plurality of reflectors, and a liquid storage tank having a hollow cavity;

• wherein the liquid storage tank has an inverted U shape, the circular arc-shaped secondary reflection element is provided directly above the liquid storage tank and has an opening facing downward, the liquid storage tank is communicated at a middle position through a temperature-controlled fluid layer, the photothermal coupling reactor is wrapped in the temperature-controlled fluid layer, two solid-state frequency dividers are symmetrically arranged directly under the photothermal coupling reactor, a heat-absorbing fluid layer and a vacuum layer are sequentially provided at an inner side of two sides of the liquid storage tank, and the plurality of the reflectors are arranged side by side directly under the liquid storage tank;
• during operation, a test sample containing a photothermal catalyst is placed in the photothermal coupling reactor, a light source is collected to the solid-state frequency dividers through the reflectors that are arranged side by side, the solid-state frequency dividers divide the light source into an infrared light part and an ultraviolet light part, and after energy of the infrared light part passes through the vacuum layer and the heat-absorbing fluid layer, the energy is transferred to the temperature-controlled fluid layer, and the temperature-controlled fluid layer transfers thermal energy to the photothermal coupling reactor, and the ultraviolet light part directly penetrates the temperature-controlled fluid layer to project light onto the photothermal catalyst in the photothermal coupling reactor.