Preparation of Poly(1-vinylimidazole)-Grafted Magnetic Nanoparticles and Their Application for Removal of Metal Ions
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Bibliographic record
Abstract
Poly(1-vinylimidazole) with a trimethoxysilyl terminal group (Im n ) was synthesized by telomerization of 1-vinylimidazole. The degree of polymerization ( n ) was determined by 1 H NMR to be 18. The Im 18 with reactive silane terminal group was grafted directly onto nanosize magnetic particles (maghemite, γ-Fe 2 O 3 ) through siloxane bonds to produce polymer-grafted magnetic nanocomposite particles (Mag-Im 18 ). The amount of polymer anchored on the particle was estimated by elemental analysis to be 5 wt %. The surface coverage of imidazolyl groups was estimated to be 0.44 mmol g - 1 . A stable Mag-Im 18 suspension was prepared, and the polymer coatings were chemically stable over a pH range of 3.5−10.0. The Mag-Im 18 showed a selective binding of divalent metal ions with a binding strength in the order of Cu 2+ ≫ Ni 2+ > Co 2+ . At pH 5.3, the limiting adsorption capacity for Cu 2+ ion was 0.11 mmol g - 1 . Selective separation/recovery of Cu 2+ ions from a Cu 2+ /Co 2+ aqueous solution was demonstrated over a pH range of 3−7.
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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 | 0.000 | 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 it