American scientists recently reported at the annual meeting of the American Chemical Society in Washington that they installed a "solar panel" for a type of bacteria, which enabled it to learn about photosynthesis and use solar energy to produce organic compounds with higher efficiency than plant photosynthesis.
Artificial photosynthesis is a research hotspot in renewable energy and green chemistry. Researchers at the University of California, Berkeley, said that the current artificial photosynthesis methods are mostly costly and that their technology is relatively inexpensive and does not generate waste.
The researchers covered cadmium sulfide semiconductor nanocrystals capable of efficiently absorbing sunlight on the surface of M. thermoacetica, which can produce acetic acid, enabling it to use solar energy to efficiently synthesize acetic acid using carbon dioxide and water as raw materials.
Acetic acid is a widely used chemical raw material. Acetogenic bacteria generally live in an environment lacking oxygen in the soil and produce acetic acid through an anaerobic respiration process. Experiments have shown that M. thermoacetica equipped with cadmium sulfide “solar panel†can greatly increase the speed of acetic acid production, and the operating efficiency can reach more than 80%, which is higher than the photosynthesis efficiency of plants, and the reaction process can be self-reliant. Keep it going.
The researchers said that the technology still needs further improvement before it is put into practical use, such as replacing non-toxic materials with cadmium sulfide. In addition, this photosynthesis process may also occur in the natural world. If the scientific community discovers natural organisms with similar functions in the future, it will have important application value.
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