Biocatalytic conversion of sunlight and carbon dioxide to solar fuels and chemicals

Abstract

Interfacing photocatalysts with microbes to produce solar fuels and chemicals from carbon dioxide and sunlight.

Photosynthetic Polymer Dots–Bacteria Biohybrid System Based on Transmembrane Electron Transport for Fixing CO2 into Poly-3-hydroxybutyrate

“…The total photosynthetic efficiency reached 2.27%, which is comparable to the efficiency of the existing inorganic photosynthetic hybrid system. 43,44 The results reflect the better CO 2 fixation ability of RH16/NR/ Pdots system than the original RH16. To verify the effect of NR in the system, the NR-surrounded RH16 in the medium was washed with phosphate buffer saline (PBS) three times, followed by testing the amount of PHB inside of RH16.…”

Microbial electrosynthesis: carbonaceous electrode materials for CO2 conversion

“…In contrast to these methods, microbial electrosynthesis (MES) is one of the most affordable technologies that can convert renewable electricity and anthropogenic CO 2 to high-value-added products at room temperature and pressure. 11 In MES, electroactive bacteria (EAB) are used as a biocatalyst on appropriate electrode materials to recycle the anthropogenic CO 2 . 12 The choice of the electrode material plays a significant role in defining the efficiency and product selectivity of the CO 2 conversion process.…”

“…The main obstacles with electrocatalytic conversion are the demand for high overpotentials, more intricate reaction pathways, and a liquid electrolyte with a low solubility of CO2 that lowers current density. In contrast to these methods, microbial electrosynthesis (MES) is one of the most affordable technologies that can convert renewable electricity and anthropogenic CO2 to high-value-added products at room temperature and pressure 11 . In MES, electroactive bacteria (EAB) are used as a biocatalyst on appropriate electrode materials to recycle the anthropogenic CO2 12 .…”

Artificial Photosynthesis: Current Advancements and Future Prospects

“…Many of these enzymes outperform synthetic catalysts when it comes to selectivity, rate, and energy efficiency, particularly in complex chemical transformations that occur in mild aqueous conditions. The reason behind this is that the protein scaffold and microenvironment surrounding the active site of enzymes restrict the conformation of substrates and high-energy intermediates, thereby controlling the outcome of reactions [ 186 , 187 , 188 , 189 , 190 , 191 ]. One remarkable example of such a reaction is the H 2 O-oxidation reaction, which is both kinetically and thermodynamically demanding.…”