Close-Packed Nanowire-Bacteria Hybrids for Efficient Solar-Driven CO2 Fixation
| Autor: | Hao Zhang, Yuhong Cao, Dylan Lu, Peidong Yang, Yue-xiao Shen, Yude Su, Stefano Cestellos-Blanco, Ji Min Kim, Chong Liu, Qiao Kong |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
Materials science Carbon fixation Photovoltaic system Nanowire Nanotechnology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Sporomusa ovata 01 natural sciences Cathode 0104 chemical sciences law.invention General Energy law Bioelectrochemistry medicine 0210 nano-technology Current density |
| Zdroj: | Joule. 4:800-811 |
| ISSN: | 2542-4351 |
| DOI: | 10.1016/j.joule.2020.03.001 |
| Popis: | Summary Microbial electro- and photo-electrochemical CO2 fixation, in which CO2-reducing microorganisms are directly interfaced with a cathode material, represent promising approaches for sustainable fuel production. Although considerable efforts have been invested to optimize microorganism species and electrode materials, the microorganism-cathode interface has not been systematically studied. Here, investigation of the interface allowed us to optimize the CO2-reducing rate of silicon nanowire/Sporomusa ovata system. Tuning the bulk electrolyte pH and increasing its buffering capacity supported the formation of a close-packed nanowire-bacteria cathode. Consequently, the resulting close-packed biohybrid achieved a CO2-reducing current density of ∼0.65 mA cm−2. When coupled with a photovoltaic device, our system enabled solar-to-acetate production with ∼3.6% efficiency over 7 days. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|