Morphology and Crystal‐Plane Effects of Nanoscale Ceria on the Activity of CuO/CeO<sub>2</sub> for NO Reduction by CO
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Bibliographic record
Abstract
Abstract The present work elucidated the morphology and crystal‐plane effects of nanoscale ceria on the activity of CuO/CeO 2 catalysts toward NO reduction. CeO 2 Nanopolyhedra were enclosed by (111) and (100) planes; the nanorods predominantly exposed (110) and (100) surfaces, and the nanocubes only showed the polar (100) planes. Moreover, the strongest interaction was between CuO and CeO 2 rods, followed by CuO/CeO 2 polyhedra, and the CuO/CeO 2 cubes showed the least interaction. Importantly, Cu 2+ ions could be incorporated into the pore and surface lattices by occupying the vacant sites in the nanostructure CeO 2 rods. Partial copper oxide species were segregated on the surface of CeO 2 cubes with larger particle sizes. As a result, the site geometry and coordination environment of Cu 2+ ions were different on the (111), (110), and (100) surfaces of CeO 2 . This surface structure effect in turn led to a higher surface reducibility, activity and N 2 selectivity of CuO/CeO 2 nanorods for NO reduction at low temperatures (below 250 °C); the polyhedra and cubes were less active.
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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 | 0.001 |
| 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 it