Enhanced Charge Carrier Dynamics on Sb<sub>2</sub>Se<sub>3</sub> Photocathodes for Efficient Photoelectrochemical Nitrate Reduction to Ammonia
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Abstract Ammonia (NH 3 ) is recognized as a transportable carrier for renewable energy fuels. Photoelectrochemical nitrate reduction reaction (PEC NO 3 RR) offers a sustainable solution for nitrate‐rich wastewater treatment by directly converting solar energy to ammonia. In this study, we demonstrate the highly selective PEC ammonia production from NO 3 RR by constructing a CoCu/TiO 2 /Sb 2 Se 3 photocathode. The constructed CoCu/TiO 2 /Sb 2 Se 3 photocathode achieves an ammonia Faraday efficiency (FE) of 88.01 % at −0.2 V RHE and an ammonia yield as high as 15.91 μmol h −1 cm −2 at −0.3 V RHE with an excellent onset potential of 0.43 V RHE . Dynamics experiments and theoretical calculations have demonstrated that the CoCu/TiO 2 /Sb 2 Se 3 photocathode possesses high light absorption capacity, excellent carrier transfer capability, and high charge separation and transfer efficiencies. The photocathode can effectively adsorb the reactant NO 3 − and intermediate, and the CoCu co‐catalyst increases the maximum Gibbs free energy difference between NO 3 RR and HER. Meanwhile, the Co species enhances the spin density of Cu, and increases the density of states near the Fermi level in pdos, which results in a high PEC NO 3 RR activity on CoCu/TiO 2 /Sb 2 Se 3 . This work provides a new avenue for the feasibility of efficient PEC ammonia synthesis from nitrate‐rich wastewater.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| 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