Visible-light Photocataltic Activity of Cr-doped TiO_2 Nanoparticles Synthesized by Flame Spray Pyrolysis
Bibliographic record
Abstract
Cr-doped TiO2 nanoparticles were synthesized by one-step flame spray pyrolysis technique. The effects of Cr3+ doping on the microstructure,light absorption property,and photocatalytic activity of the samples were investigated. It is found that increasing Cr3+ concentration restrains the formation of anatase and simultaneously favors the formation of rutile. At low concentration (≤1%),Cr is mainly incorporated into the crystal lattice of TiO2 in the form of Cr3+,while high Cr concentration promotes the formation of Cr2O3 clusters. The result of photocatalytic degradation of 2,4-dichlorophenol demonstrates that appropriate Cr3+ doping can evidently enhance the visible-light photocatalytic activity of TiO2. The optimal Cr3+ concentration to obtain the highest photocatalytic activity is 1at%. The improvement of visible-light photocatalytic activity derived from Cr doping is mainly related to the enhancement of visible light absorption,appropriate crystalline composition,and improved transfer efficiency of photogenerated electrons and holes.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.002 | 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 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".