Shulou(Shulou.com)11/24 Report--

CTOnews.com, October 8, according to the website of the Institute of Microbiology of the Chinese Academy of Sciences, the Institute of Microbiology of the Chinese Academy of Sciences, Tianjin Institute of Industrial Biotechnology and Qingdao Institute of Biological Energy and process have created miniaturized bionic marine cells and made new progress in the field of biological photovoltaic.

CTOnews.com learned that the findings were published in the journal Nature Communications (Nature Communications) on September 24.

This study is inspired by the fact that the marine microbial ecosystem is a natural solar energy biotransformation system, and according to its basic characteristics composed of primary producers, primary decomposers and end consumers, a four-bacteria microbiome composed of primary producers (cyanobacteria), primary decomposers (E. coli) and end consumers (Shiva and Bacillus) was designed and constructed. It is proved that the four-bacteria microbiome is the best in terms of internal resistance, maximum power density and stability of the system, indicating that maintaining a complete three-level ecological structure can achieve efficient biological photoelectric conversion.

▲ source: the website of Institute of Microbiology, Chinese Academy of Sciences further studied the contradiction between photosynthetic oxygen evolution of cyanobacteria and anaerobic electricity production of heterotrophic microorganisms, blocked the aerobic respiration pathway of Escherichia coli and Shiva, and developed an oxygen-insulating conductive hydrogel to encapsulate Escherichia coli, Shiva and Bacillus to form an artificial deposit that can isolate oxygen and carry out electron transfer. In this study, the artificial deposition layer and the water column layer containing cyanobacteria were assembled together to create an integrated biological solar cell, which can directly convert light energy into electric energy and run stably for more than one month.

According to reports, the biological solar cell simulates the basic physical and ecological structure of marine cells, but the time and space scale is significantly compressed, so it can be regarded as a miniaturized bionic marine battery. Biomimetic marine cells improve the biological photovoltaic efficiency to a new level, which provides a new path for the development of efficient and stable biological solar cells, and further shows the biotechnology potential of synthetic ecology.

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