Basal-Plane Pores Activate Monolayer MoS<sub>2</sub> for the Hydrogen Evolution Reaction
Bibliographic record
Abstract
Identification of catalytically relevant sites in solid-state materials and our ability to manipulate such sites is critical to designing improved electrocatalysts. In this work, we prepare a series of monolayer MoS 2 using chemical vapor deposition and install varied concentrations of defects through swift heavy ion irradiation. Electron micrographs indicate that the ion irradiation procedure generates pores within MoS 2 flakes, and Raman microscopic maps show that the defects exert a strongly localized influence. The localization is strong enough that spectra acquired across individual particles can be classified in a binary fashion: regions are either affected by the irradiation-induced pore or appear as pristine MoS 2 . Besides providing insight into the nature of the defects within the monolayers, this feature enables spatial resolution of regions with significant densities of such pores. This capability is used to quantify the defect density across the sample series and show that the pores located within the MoS 2 flakes are particularly active sites for electrocatalytic hydrogen evolution.
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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".