Semi-Artificial Photosynthetic Machinery for Carbon Dioxide Capture and Conversion.
basic_science · Level V
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- Record sourced from PubMed, PMID 41416394.
- Also identified by DOI 10.1002/adma.202521092.
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Abstract
Producing value-added chemicals directly from CO<sub>2</sub> powered by sunlight offers a sustainable approach to addressing both environmental and economic challenges. However, the inherent chemical stability of CO<sub>2</sub> poses a grand challenge in achieving highly active and selective CO<sub>2</sub> conversion. Herein, we develop a biohybrid semi-artificial photosynthetic system that integrates carbonic anhydrase (CA) and a CuZn nanozyme photosensitizer with a dendritic polymer (PPA) for the sustainable transformation of CO<sub>2</sub> into dimethyl carbonate (DMC). The PPA-wrapped CA/CuZn can capture CO<sub>2</sub> to form active intermediates. Through photo-induced charge transfer under visible light illumination, the CA/CuZn@PPA system achieves 100% selectivity for DMC production at room temperature and low CO<sub>2</sub> pressure.