Effect of Temperature Variation on the Under-Potential Deposition of Copper on Pt(111) in Aqueous H<sub>2</sub>SO<sub>4</sub>
Bibliographic record
Abstract
The under-potential deposition of copper on Pt(111) from aqueous 0.05 M H 2 SO 4 + 5 mM CuSO 4 ·5H 2 O is studied in the 273 ≤ T ≤ 333 K range using cyclic voltammetry (CV). The CV transients always reveal two cathodic peaks (C I and C II ) for the entire temperature range; there is only one anodic peak (A I ) in the case of 273 ≤ T < 298 K and the second one appears in the case of T ≥ 298 K. In the case of 273 ≤ T < 298 K, the cathodic and anodic peaks shift toward lower potentials upon T increase, while in the case of T ≥ 298 K, there is no observable peak displacement. The charge density associated with the Cu UPD deposition and stripping does not reveal any temperature-dependence. The results demonstrate that T variation does not lead to charge-density redistribution between the peaks, but the charge density of the first peak (C I and A I ) in the deposition-stripping profiles is always greater than that of the second peak (C II and A II ). The experimentally determined charge density associated with the Cu deposition and stripping is lower than the value expected for one epitaxial Cu UPD layer on Pt(111). This difference is due to the coadsorption of anions that occurs concurrently with UPD Cu.
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.
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 | 0.001 |
| 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".