Core/shell 1T/2H-MoS2 nanoparticle induced synergistic effects for enhanced hydrogen evolution reaction
Bibliographic record
Abstract
This study investigates the photoelectrochemical potential of 1T/2H-MoS 2 nanoparticles synthesized via chemical vapor deposition. The 60 nm nanoparticles, analyzed using SEM, XRD, Raman spectroscopy, and XPS, have a high-quality mixed-phase composition. TEM revealed a core–shell structure. A MoS 2 /p-Si photocathode showed a current density of −13.5 ± 1 mA/cm 2 at 0 V and an onset potential of 110 mV, with rapid photoresponse times and an 8 % IPCE at 450 nm. The mixed-phase and core–shell structure enhance electronic and catalytic properties, promising advancements in renewable energy technologies. Green hydrogen is a highly sought-after clean fuel for the next generation of engines aimed at achieving net-zero emissions. Herein, we design and fabricate a mixed-phase core/shell nanoparticles consisting of a semiconducting 2H-MoS 2 core and a metallic 1T-MoS 2 coating. The core/shell exhibits spherical morphology with an average diameter of 60 nm. To leverage this unique structure, we develop a photocathode device composed of 1T/2H-MoS 2 core/shell integrated with p-type silicon to catalyze hydrogen evolution reaction via water splitting driven by solar energy. The core/shell device demonstrates, at zero bias, a remarkable current density of −13.5 ± 1 mA/cm 2 and an onset potential of 110 mV. Additionally, the device exhibited a rapid photoresponse time and a high incident photon-to-current efficiency reaching 80 % at 450 nm. Our findings highlight the synergistic effect of 1T/2H-MoS 2 mixed-phase core/shell structure in developing the next generation of high-efficient photocatalysts for green hydrogen generation.
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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 | 0.001 | 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 | 0.000 | 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".