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- Ghaani, M. (author)
Determination of 2,4-diaminotoluene by a bionanocomposite modified glassy carbon electrode
- Article/chapterEnglish2018
Publisher, publication year, extent ...
- Elsevier B.V.2018
- printrdacarrier
Numbers
- LIBRIS-ID:oai:DiVA.org:kth-236544
- https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-236544URI
- https://doi.org/10.1016/j.snb.2018.09.053DOI
Supplementary language notes
- Language:English
- Summary in:English
Part of subdatabase
- SwePubSwePub
Classification
Notes
- QC 20181127
- This work describes the development of a modified glassy carbon electrode (GCE) for the selective determination of 2,4-diaminotoluene (TDA), a primary aromatic amines (PAAs) that can be formed in food packaging materials including aromatic polyurethane (PU) adhesives. The electrode's surface was modified with multi-walled carbon nanotubes (MWCNTs), MWCNTs in chitosan (CS), and gold nanoparticles (AuNPs). The highest current response was achieved with AuNPs/MWCNTs-CS/GC electrodes, which exhibited an oxidation peak of 9.87 μA by cyclic voltammetry (CV), compared with 1.39 μA of the bare GCE. A detection limit of 35 nM was estimated by amperometry experiments. The oxidation of TDA was strongly dependent on the pH of the medium, having maximum sensitivity at pH ∼ 7. From a mechanistic point of view, the diffusion coefficient of TDA (D = 6.47 × 10−4 cm2 s−1) and the number of electrons (n ≈ 2) involved in the catalytic oxidation of TDA at the surface of the AuNPs/MWCNTs-CS/GCE were determined. The practical utility of this nanocomposite modified electrode was demonstrated by migration studies from conventional food packaging materials.
Subject headings and genre
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- 2
- 4-Diaminotoluene (TDA)
- Chitosan
- Electrochemical nanosensor electrode
- Gold nanoparticle
- Multi-walled carbon nanotube
- Primary aromatic amine
- Adhesives
- Amines
- Aromatic compounds
- Aromatization
- Catalytic oxidation
- Cyclic voltammetry
- Glass
- Gold nanoparticles
- Metal nanoparticles
- Multiwalled carbon nanotubes (MWCN)
- Oxidation
- Packaging machines
- Packaging materials
- Yarn
- Food-packaging materials
- Maximum sensitivity
- Modified electrodes
- Modified glassy carbon electrode
- Number of electrons
- Primary aromatic amines
- Selective determination
- Glass membrane electrodes
Added entries (persons, corporate bodies, meetings, titles ...)
- Rovera, C. (author)
- Pucillo, F. (author)
- Ghaani, M. R. (author)
- Olsson, Richard T.KTH,Polymera material(Swepub:kth)u1ob386f (author)
- Scampicchio, M. (author)
- Farris, S. (author)
- KTHPolymera material (creator_code:org_t)
Related titles
- In:Sensors and actuators. B, Chemical: Elsevier B.V.277, s. 477-4830925-40051873-3077
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- Royal Institute of Technology
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