The Art of Decoration: Rhodium-Modified Platinum Films with Preferential (100) Orientation as Electrocatalysts for Nitrate Reduction and Dimethyl Ether Oxidation
Bibliographic record
Abstract
Nanostructured platinum films with a preferential (100) orientation were decorated with a rhodium adlayer through potentiodynamic electrodeposition. The Rh surface coverage was controlled by varying the number of electrodeposition cycles, and the growth of the Rh layer was followed by means of the distinct hydrogen adsorption/desorption peaks pertaining to Rh. The bimetallic electrodes were tested for their catalytic activity toward a set of electrochemical reactions of the carbon and nitrogen cycles (nitrate reduction, CO oxidation, and DME oxidation) in H 2 SO 4 . At the same time, these reactions provided further insight into the surface structure of the Rh deposits: thus, it was found that Rh deposition occurs mostly at (100) sites, creating ordered Rh islands. It was shown that DME oxidation at Pt(100) can be further promoted by minimum Rh coverages, at which the highly active (100) terraces remain mostly free. On the other hand, the activity toward nitrate reduction can be enhanced by increasing amounts of Rh. Finally, we succeeded in directing Rh deposition through the partial stripping of adsorbed CO, using this molecule as a site-blocking adlayer protecting wide (100) terraces, thus achieving the maximum enhancement for DME oxidation.
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How this classification was reachedexpand
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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".