Morphology and Crystal‐Plane Effects of Nanoscale Ceria on the Activity of CuO/CeO<sub>2</sub> for NO Reduction by CO
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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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 | 0.000 |
| 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 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".