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Researchers from Japan’s Matsushita Corporation have said that they have developed artificial photosynthesis technologies that use sunlight, water, and carbon dioxide to make oxygen and organic matter. This technology has increased the conversion efficiency of sunlight to 0.2% and has reached the level of general plants.
Japanese researchers first used a wire to connect a nitride semiconductor and a metal catalyst, and then irradiated light to a nitride semiconductor in water. The water was decomposed into oxygen and hydrogen ions. The hydrogen ions moved to the electrode of the metal catalyst and reacted with carbon dioxide. Produces organic formic acid.
Researchers at Toyota Motor Co., Ltd. for the first time successfully achieved artificial photosynthesis last year, but the energy conversion efficiency was only 0.04%. This time, Panasonic researchers adjusted the nitride semiconductor's electronic state and efficiently absorbed light energy to promote the reaction. It was the first time in the world that it had successfully achieved the same 0.2% conversion efficiency as the plant.
Researchers are prepared to further improve the efficiency of energy conversion and strive for the practical application of this technology as soon as possible.
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