Plants use solar energy and produce oxygen and organic matter from water and carbon dioxide. We ourselves are made of organic matter. Food is also organic matter. Oil, coal, natural gas and other fossil fuels, as well as their petrochemical derivatives, such as plastics, are all organic matter, which results from photosynthesis from plants and algae.
Organic matter can accumulate energy, which is released by burning. In other words, the result of photosynthesis is the formation of a substance that accumulates energy derived from the energy of light by means of water.
Artificial photosynthesis, while not exactly repeating the process occurring in plants, but seeks to create useful compounds, rich in energy reserves, from sunlight, water and carbon dioxide.
The best result will be the production of hydrogen and oxygen by splitting the water molecules with the help of sunlight, both from the point of view of obtaining energy and from the point of view of the cycle of substances. If you achieve the combustion of hydrogen in a reaction with oxygen, then after the release of energy, it will turn into water, and if you make hydrogen react with carbon dioxide, you can create organic matter.
The Earth’s energy resources are distributed unevenly, in addition, they are exhaustible. On the other hand, the energy of the sun is practically unlimited, all countries receive it on an equal footing. In addition to the fact that artificial photosynthesis forms organic matter with the help of carbon dioxide, it can directly affect the turnover of CO2. With its help it will be possible to solve at once two tasks: to support a source of energy and to stop global warming.