Towards Molecular-Level Understanding of Electrocatalytic Hydrogenation. A Comparison of Cyclic Voltammetric Behavior of Benzene Adsorption at Pt(111) Single Crystal Electrodes in Aqueous HClO4 and H2SO4
Bibliographic record
Abstract
We present new results on the influence of (C6H6)ads on the HUPD and anion adsorption on the Pt(111) electrode in aqueous HClO4. The Pt(111) electrode is modified by an overlayer of C6H6 ads upon its cycling in the 0.05-0.80 V range in aq. acid + 1 mM C6H6. The (C6H6)ads overlayer significantly changes the HUPD (underpotential deposited H) and anion adsorption, and cyclic-voltammetry (CV) profiles show a sharp cathodic peak and an asymmetric anodic one in the 0.05-0.80 V potential range. The C6H6 ads layer blocks the perchlorate and sulphate anion adsorption but facilitates the adsorption of one monolayer of HUPD which is embedded in the Pt(111) surface. The behavior described above in aq. HClO4 is the same as that in aq. H2SO4. Cycling in the 0.4-1.25 V potential range in benzene-free aq. HClO4 results in the complete oxidation of (C6H6)ads to CO2, which allows the determination that a quasi full monolayer of (C6H6)ads lies on the surface.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".