CO₂-based biodegradable plastics and their precursor production using photo-biocatalytic processes.

Area of Science:

• Green Chemistry
• Biotechnology
• Materials Science

Background:

• Plastic pollution and global warming are significant environmental challenges.
• Current biodegradable plastics often rely on petroleum-based precursors.
• Developing sustainable alternatives from CO2 is crucial for environmental remediation.

Purpose of the Study:

• To review recent advancements in visible-light driven production of CO2-based biodegradable plastics and their precursors.
• To highlight the integration of photoredox and biocatalytic processes.
• To explore sustainable solutions for plastic waste and climate change.

Main Methods:

• Utilizing semiconductor photocatalyst-based photoredox systems with microbial biocatalysis.
• Employing organic dye-based photoredox systems with electron donors, mediators, and enzyme biocatalysis.
• Investigating the conversion of CO2 and organic compounds into valuable chemical products.

Main Results:

• Demonstrated production of poly(hydroxybutyrate) (PHB) and its precursors (acetate, shikimic acid, acetoin) from CO2.
• Showcased synthesis of biodegradable plastic precursors like 3-hydroxybutyrate, L-malate, and fumarate from CO2 and small organic molecules.
• Highlighted the efficacy of combined photoredox and biocatalytic strategies.

Conclusions:

• Visible-light driven redox and biocatalytic processes offer a promising route for sustainable production of biodegradable plastics.
• These methods provide effective resolutions for plastic pollution and global warming.
• Further research in this area can lead to novel eco-friendly materials and processes.