| Title | Photoelectrochemical CO2-to-fuel conversion with simultaneous plastic reforming |
|---|---|
| ID_Doc | 7963 |
| Authors | Bhattacharjee, S; Rahaman, M; Andrei, V; Miller, M; Rodríguez-Jiménez, S; Lam, E; Pornrungroj, C; Reisner, E |
| Title | Photoelectrochemical CO2-to-fuel conversion with simultaneous plastic reforming |
| Year | 2023 |
| Published | Nature Synthesis, 2, 2 |
| Abstract | Solar-driven conversion of CO2 and plastics into value-added products provides a potential sustainable route towards a circular economy, but their simultaneous conversion in an integrated process is challenging. Here we introduce a versatile photoelectrochemical platform for CO2 conversion that is coupled to the reforming of plastic. The perovskite-based photocathode enables the integration of different CO2-reduction catalysts such as a molecular cobalt porphyrin, a Cu91In9 alloy and formate dehydrogenase enzyme, which produce CO, syngas and formate, respectively. The Cu27Pd73 alloy anode selectively reforms polyethylene terephthalate plastics into glycolate in alkaline solution. The overall single-light-absorber photoelectrochemical system operates with the help of an internal chemical bias and under zero applied voltage. The system performs similarly to bias-free, dual-light absorber tandems and shows about 10-100-fold higher production rates than those of photocatalytic suspension processes. This finding demonstrates efficient photoelectrochemical CO2-to-fuel production coupled to plastic-to-chemical conversion as a promising and sustainable technology powered by sunlight. |
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