How can you identify AuNPs from FTIR?
This page summarizes the recurring FTIR evidence reported for AuNPs, 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
AuNPs 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 |
|---|---|
| Hydroxyl (O-H) | 11 |
| Alkyl C-H | 6 |
| Amide | 5 |
| Methacrylate | 4 |
| Carboxyl (COOH) | 4 |
| Carbonyl (C=O) | 4 |
| Acetate | 4 |
| Silanol (Si-OH) | 4 |
Spectrum logic
The logic here is evidence aggregation: repeated literature mentions of AuNPs, 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 4.8
AuNPs
Biomedical and Catalytic Applications of Gold and Silver-Gold Alloy Nanoparticles Biosynthesized Using Cell-Free Extract of <italic>Bacillus Safensis</italic> LAU 13: Antifungal, Dye Degradation, Anti-Coagulant and Thrombolytic Activities DOI: 10.1109/TNB.2016.2559161 -
confidence 4.8
AuNPs
Hendi 等 - 2020 - Green nanogold activity in experimental breast car DOI: 10.1042/BSR20200115 -
confidence 4.8
AuNPs
Kitching 等 - 2022 - Biosynthesis of Gold Nanoparticles by Vascular Cel DOI: 10.3389/fmicb.2022.813511 -
confidence 4.8
AuNPs
Green Synthesis of Silver and Gold Nanoparticles Using Lonicera Japonica Flower Extract DOI: 10.5012/bkcs.2012.33.8.2609 -
confidence 3.6
AuNPs
AuNPs/CNF-modified DNA biosensor for early and quick detection of O. tsutsugamushi in patients suffering from scrub typhus DOI: 10.1007/s13205-020-02432-w -
confidence 3.6
AuNPs
Chitosan/AuNPs Modified Graphene Electrochemical Sensor for Label‐Free Human Chorionic Gonadotropin Detection DOI: 10.1002/elan.201400311 -
confidence 2.8
AuNPs
Biogenic Synthesis of Gold Nanoparticle from Enicostema axillare and Their In Vitro Cytotoxicity Study Against MCF-7 Cell Line DOI: 10.1007/s12668-019-00656-6 -
confidence 2.8
AuNPs
Phytochemicals Mediated Synthesis of AuNPs from Citrullus colocynthis and Their Characterization DOI: 10.3390/molecules27041300 -
confidence 2.8
AuNPs
Comparative Study between Two Simple Synthesis Methods for Obtaining Green Gold Nanoparticles Decorating Silica Particles with Antibacterial Activity DOI: 10.3390/ma15217635 -
confidence 2.8
AuNPs
Microalgae Peptide-Stabilized Gold Nanoparticles as a Versatile Material for Biomedical Applications DOI: 10.3390/life12060831
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