The bovine carbonic anhydrase promoted dehydration of bicarbonate to CO2 for the electrochemical production of syngas
Why this work is in the frame
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Bibliographic record
Abstract
The electrochemical reduction of CO 2 into value-added products is a promising strategy for carbon footprint mitigation. Current research efforts are focused on combining this strategy with CO 2 capture in bicarbonate-based solvents to build an efficient CO 2 capture and utilization system. The primary challenge to address in this system is the development of a cost-effective CO 2 regeneration method that will enable the CO 2 gas feed to be continuously recovered from the bicarbonate capture medium for utilization. In this work, we studied systems for CO 2 utilization, integrated with the bicarbonate dehydration activity of bovine carbonic anhydrase (BCA) to recover CO 2 for the electrochemical production of syngas. Specifically, we investigated the generation of CO 2 from bicarbonate catalyzed by BCA in the free form or immobilized on the electrode surface and the consequent Au-catalyzed electrochemical reduction of CO 2 to CO. We showed that BCA functions efficiently in 2 M KHCO 3 at pH 9 to promote the release of CO 2 from an external compartment to the Au electrocatalyst in the CO 2 reduction reaction electrolyzer, thereby achieving a significant faradaic efficiency of 27% for the CO product. This work demonstrates a sustainable and environmentally friendly approach for the electrochemical utilization of captured CO 2 .
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it