Light-Driven CO Reduction with a Surface-Displayed Enzyme Cascade-CN Hybrid.

Efficient and cost-effective conversion of CO to biomass holds the potential to address the climate crisis. Light-driven CO conversion can be realized by combining inorganic semiconductors with enzymes or cells. However, designing enzyme cascades for converting CO to multicarbon compounds is challenging, and inorganic semiconductors often possess cytotoxicity.

An Edible and Nutritive Zinc-Ion Micro-supercapacitor in the Stomach with Ultrahigh Energy Density.

Miniature energy storage devices simultaneously combining high energy output and bioavailability could greatly promote the practicability of green, safe, and nontoxic in vivo detection, such as for noninvasive monitoring or treatment in the gastrointestinal tract, which is still challenging. Herein, we report ingestible and nutritive zinc-ion-based hybrid micro-supercapacitors (ZMSCs) consisting of an edible active carbon microcathode and zinc microanode, which can be inserted into a standard-sized capsule and ingested in a pig stomach. With features including flexibility, light weight, and shape adaptability, a single microdevice displays a high energy density of 215.