How can you identify Fe2O3 from FTIR?

Quick answer

Fe2O3 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

Spectrum logic

The logic here is evidence aggregation: repeated literature mentions of Fe2O3, 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

• confidence 4.8

  Fe2O3

  Effect of Zn Concentration on Microstructural, Optical, and Hyperfine Properties of Nanocrystalline α-Fe2O3 DOI: 10.1007/s40195-014-0093-8
• confidence 4.8

  Fe2O3

  Low-Temperature CO Oxidation over CuO-CeO2/Fe2O3 Catalyst: Effect of KMnO4 Modification DOI: 10.3390/met13020186
• confidence 4.8

  Fe2O3

  Synthesis of highly stable γ-Fe ₂ O ₃ ferrofluid dispersed in liquid paraffin, motor oil and sunflower oil for heat transfer applications DOI: 10.1039/c7ra13467c
• confidence 4.8

  Fe2O3

  Yan 等 - 2019 - The behavior of ozone on different iron oxides sur DOI: 10.1038/s41598-019-50910-w
• confidence 3.6

  Fe2O3

  Bio-redox potential of Hyphaene thebaica in bio-fabrication of ultrafine maghemite phase iron oxide nanoparticles (Fe2O3 NPs) for therapeutic applications DOI: 10.1016/j.msec.2020.110890
• confidence 3.6

  Fe2O3

  Screening of In Vitro Antibacterial Property of Hematite (α-Fe2O3) Nanoparticles: A Green Approach DOI: 10.1007/s40995-020-00995-0
• confidence 3.6

  Fe2O3

  Transformation in the structural and optical properties with the phase change from hematite (Fe2O3) to pure spinel structure in Mn-Zn nanoferrites DOI: 10.1016/j.physb.2020.412107
• confidence 3.6

  Fe2O3

  Structural characterization of green synthesized α-Fe2O3 nanoparticles using the leaf extract of Spondias dulcis DOI: 10.1016/j.surfin.2020.100618
• confidence 3.6

  Fe2O3

  Facile Synthesis of Substantially Magnetic Hollow Nanospheres of Maghemite (γ-Fe2O3) Originated from Magnetite (Fe3O4) via Solvothermal Method DOI: 10.1007/s10948-020-05481-7
• confidence 3.6

  Fe2O3

  In Situ Biosynthesis of Reduced Alpha Hematite (α-Fe2O3) Nanoparticles by Stevia Rebaudiana L. Leaf Extract: Insights into Antioxidant, Antimicrobial, and Anticancer Properties DOI: 10.3390/antibiotics11091252