| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Nicdaeid, Niamh
University of Dundee
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Heavy metal-free MnInPSeS alloyed quantum dots-molecularly imprinted polymer as an electrochemical nanosensor for the detection of the synthetic cathinone, 3,4-methylenedioxypyrovaleronecitations
- 2023Cadmium-free silica-encapsulated molecularly imprinted AuZnCeSeS quantum dots nanocomposite as an ultrasensitive fluorescence nanosensor for methamphetamine detectioncitations
- 2022Thiolated gamma-cyclodextrin-polymer-functionalized CeFe3O4 magnetic nanocomposite as an intrinsic nanocatalyst for the selective and ultrasensitive colorimetric detection of triacetone triperoxidecitations
- 2022Alloyed AuFeZnSe quantum dots@gold nanorod nanocomposite as an ultrasensitive and selective plasmon-amplified fluorescence OFF-ON aptasensor for arsenic (III)citations
- 2022Fabrication of a near-infrared fluorescence-emitting SiO2-AuZnFeSeS quantum dots-molecularly imprinted polymer nanocomposite for the ultrasensitive fluorescence detection of levamisolecitations
- 2021Polymeric-coated Fe-doped ceria/gold hybrid nanocomposite as an aptasensor for the catalytic enhanced colorimetric detection of 2,4-dinitrophenolcitations
- 2020Aptamer-based cocaine assay using a nanohybrid composed of ZnS/Ag2Se quantum dots, graphene oxide and gold nanoparticles as a fluorescent probecitations
- 2019Multi-shaped cationic gold nanoparticle-L-cysteine-ZnSeS quantum dots hybrid nanozyme as an intrinsic peroxidase mimic for the rapid colorimetric detection of cocainecitations
- 2016A thermoanalytical, X-ray diffraction and petrographic approach to the forensic assessment of fire affected concrete in the United Arab Emiratescitations
- 2016Nondestructive Handheld Fourier Transform Infrared (FT-IR) Analysis of Spectroscopic Changes and Multivariate Modeling of Thermally Degraded Plain Portland Cement Concrete and its Slag and Fly Ash-Based Analogscitations
- 2011The recoverability of fingerprints on nonporous surfaces exposed to elevated temperatures
- 2009Evaluation of available techniques for the recovery of latent fingerprints from untreated plywood surfaces
- 2008Recovery of fingerprints from arson scenes
- 2008Comparison of vacuum metal deposition and powder suspension for recovery of fingerprints on wetted nonporous surfaces
Places of action
| Organizations | Location | People |
|---|
article
Polymeric-coated Fe-doped ceria/gold hybrid nanocomposite as an aptasensor for the catalytic enhanced colorimetric detection of 2,4-dinitrophenol
Abstract
The Meisenheimer charge transfer reaction has, for many years, been the predominant mode of interaction to detect explosive compounds via the naked eye. However, this method is majorly sensitive to 2,4,6-trinitrotoluene and insensitive to many other explosive compounds. In this work, we report on the development of a novel aptamer-based amphiphilic polymer-coated Fe-doped ceria/gold (Au) hybrid nanocomposite (NC) as a peroxidase mimetic nanozyme for explosive colorimetric detection. Polymeric-Fe-doped ceria NC was synthesized and incorporated in-situ in the hydrothermal synthetic pot of citrate-Au nanoparticles to form a polymer-Fe-doped ceria/Au NC. A streptavidin (strep)-biotinylated DNA aptamer (B-Apt) binding complex was immobilised on<br/>the polymer-Fe-doped ceria/Au NC surface and the modified NC was used as a functional nanozyme in a peroxidase mimic assay to catalyse the oxidation of 3,3′,5,5′-tetramethylbenzidine by H2O2. Screening of several explosives showed that 2,4-dinitrophenol (DNP) bonded with higher affinity to the aptamer based on the selective greenish colorimetric catalytic reaction observed. The peroxidase mimetic activities of several nanozymes were tested and our analysis showed that the polymer-Fe-doped ceria/Au NC generated enhanced catalytic activity for DNP detection. Several optimisation reactions including the kinetic reaction mechanism was conducted and a limit of detection of 0.45 µg/mL (2.4 µM) was obtained for DNP recognition. The peroxidase mimetic strep-B-Apt-polymer-Fe-doped ceria/Au NC biosensor was successfully applied for the detection of DNP in tap water and river water with satisfactory recoveries in the range of 97–117%.