Synthesis of amorphous SiO<sub>2</sub> nanowires by one-step low temperature hydrothermal process
Why this work is in the frame
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Bibliographic record
Abstract
A novel procedure for the growth of amorphous SiO 2 nanowires by a one-step hydrothermal process directly using commercial silicate glass in cheap aqueous ammonium hydroxide without any other catalyst is reported. The effect of concentration of aqueous ammonium hydroxide and reaction time on synthesized product was investigated. It was found that SiO 2 nanowires with high aspect ratio can be synthesized using silicate glass at 170 °C in 2.5 mol l −1 aqueous ammonium hydroxide for 7 h. Scanning electron microscopy, high resolution transmission electron microscopy and x-ray diffraction results showed that the products were amorphous SiO 2 nanowires with diameters of 20∼100 nm and lengths of several tens of micrometers. X-ray photoelectron spectroscopy (XPS) indicated that the SiO 2 nanowires retained small amounts of MgO and CaO from the silicate glass. The result of photoluminescence (PL) spectra of the nanowires exhibited a strong, sharp photoluminescence (PL) emission peak, centered at 426 nm. Based on the results, the OH-assisted hydrolysis of the glass has been proposed as the growth mechanism of the SiO 2 nanowires.
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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 | 0.002 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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