How can you identify magnetite from FTIR?
This page summarizes the recurring FTIR evidence reported for magnetite, including the most frequent peaks, supporting functional groups, and literature-backed interpretation patterns. It is a structured evidence page, not a claim of automatic single-spectrum certainty.
Backed by 12 cited sources
Quick answer
magnetite is usually reported with a recurring pattern of peaks and functional-group evidence. The most useful approach is to cross-check at least two characteristic peaks before treating it as a match, then verify whether the full spectrum still fits the same material family.
Peak interpretation
Possible materials / groups
| Functional group | Evidence |
|---|---|
| Silicon-oxygen (Si-O) | 9 |
| Hydroxyl (O-H) | 7 |
| Metal oxygen | 6 |
| Carbonyl (C=O) | 6 |
| Carboxyl (COOH) | 5 |
| Methacrylate | 4 |
| Acetate | 4 |
| Amide | 4 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of magnetite, repeated peak positions, and repeated functional-group associations. A strong material hypothesis should still be supported by multiple peaks that agree with each other, not by one headline band alone.
Real-world usage
This page is designed for polymer identification, incoming-material QC, unknown plastic analysis, recycled-content review, and literature-backed interpretation of reference spectra.
Common mistakes
- Calling a material match too early because one famous peak is present.
- Ignoring sample prep, fillers, oxidation, water, or additives that can change the apparent pattern.
- Using literature evidence without checking whether your own sampling mode and spectrum quality are comparable.
Verification advice
Use DSC, GC-MS, or TGA to validate the material hypothesis when the peak pattern is ambiguous or mixed.
Literature behind this page
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confidence 0.9
magnetite
Competitive adsorption geometries for the arsenate As(V) and phosphate P(V) oxyanions on magnetite surfaces: Experiments and theory DOI: 10.2138/am-2020-7350 -
confidence 0.9
magnetite
Efficient Uptake of Angiotensin-Converting Enzyme II Inhibitor Employing Graphene Oxide-Based Magnetic Nanoadsorbents DOI: 10.3390/w15020293 -
confidence 0.8
magnetite
Efficiency of Fe3O4 Nanoparticles with Different Pretreatments for Enhancing Biogas Yield of Macroalgae Ulva intestinalis Linnaeus DOI: 10.3390/molecules26165105 -
confidence 0.8
magnetite
Kolodynska 等 - 2016 - Development of New Effective Sorbents Based on Nan DOI: 10.1186/s11671-016-1371-3 -
confidence 0.8
magnetite
Synthesis, Surface Modification and Characterisation of Biocompatible Magnetic Iron Oxide Nanoparticles for Biomedical Applications DOI: 10.3390/molecules18077533 -
confidence 0.7
magnetite
The capability of nanomagnetite carboxymethyl kappa-carrageenan coated to adsorp metal ions DOI: 10.1063/5.0000680 -
confidence 0.7
magnetite
Pereira 等 - 2018 - Magnetite-Corrole Hybrid Nanoparticles DOI: 10.3390/magnetochemistry4030037 -
confidence 0.5
magnetite
Experimental Measurement and Equilibrium Modeling of Adsorption of Asphaltenes from Various Origins onto the Magnetite Surface under Static and Dynamic Conditions DOI: 10.1021/acsomega.1c04224 -
confidence 0.3
magnetite
Kinetics of silicate sorption on magnetite and maghemite: An in situ ATR-FTIR study DOI: 10.1016/j.colsurfa.2009.01.041 -
magnetite
Separation of fine beryl from quartz via magnetic carriers by the aiding of non-ionic surfactant DOI: 10.37190/ppmp/132329
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