In Situ Synthesis of a Hydroxyapatite and Reduced Graphene Oxide Composite for Potential Electrochemical Biosensing Applications
Bibliographic record
Abstract
Hydroxyapatite/reduced graphene oxide (HA/rGO) composites are extensively used in numerous applications, including tissue engineering, energy storage, catalysis, and electrochemical sensing. In this study, a novel microwave hydrothermal-assisted coprecipitation method was implemented to synthesize an in situ HA/rGO composite for potential electrochemical biosensing applications. The structural, optical, and morphological properties were thoroughly analyzed using XRD, Raman spectroscopy, FTIR, STXM, and SEM. Rietveld refinement confirmed the presence of a hexagonal crystalline phase in the HA/rGO composite with a mean crystallite size of 28.1 nm. Raman spectroscopy revealed characteristic vibrational modes of each precursor, while STXM spectra displayed electronic transitions corresponding to rGO (C 1s to π* and σ* levels) as well as Ca L-edge and O and P K-edge transitions of HA, confirming a composite material. FTIR analysis confirmed the reduction of GO to rGO by tracking the presence and disappearance of oxygen-functional groups in the graphitic structure. Electron microscopy revealed that HA nanorods, averaging 75 nm in length, were uniformly distributed along the surface and edges of the rGO layers.
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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".