Anwar, Ayaz and Minhaz, Aaliya and Khan, Naveed Ahmed and Kalantari, Katayoon and Afifi, Amalina Muhammad and Shah, Muhammad Raza (2018) Synthesis of gold nanoparticles stabilized by a pyrazinium thioacetate ligand: A new colorimetric nanosensor for detection of heavy metal Pd(II). Sensors and Actuators B: Chemical, 257. pp. 875-881. ISSN 0925-4005, DOI https://doi.org/10.1016/j.snb.2017.11.040.
Full text not available from this repository.Abstract
We developed a facile method for the synthesis of Gold nanoparticles (AuNPs) stabilized by cationic 1-(3-(acetylthio)propyl)pyrazin-1-ium ligand denoted as APP. Gold nanoparticles stabilized by APP (APP-AuNPs) are found to be polydispersed in size and lie in the range of 5–10 nm. We report a robust and sensitive protocol for the detection of heavy toxic metal ion Pd(II) in water using APP-AuNPs. From the fifteen salts tested, APP-AuNPs demonstrated a sensitive and selective spectrophotometric signal, as well as naked eye indication for recognition of Pd(II) ions. Pd(II) ions caused a colorimetric, distinguished response to APP-AuNPs based on the aggregation induced decrease of surface plasmon resonance (SPR) band. The nanosensor probe displayed a sensitive response to the Pd(II) ions in a wide range of concentration and pH, with detection limit of as low as 4.23 μM. Furthermore, the decrease in SPR band of APP-AuNPs due to Pd(II) ions was unaffected by tap water samples and/or human blood plasma.
| Item Type: | Article |
|---|---|
| Funders: | Higher Education Commission Pakistan |
| Uncontrolled Keywords: | Gold nanoparticles; Colorimetric sensing; Pd(II); Tap water; Human blood plasma |
| Subjects: | Q Science > QD Chemistry Q Science > QH Natural history T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 20 Sep 2019 02:43 |
| Last Modified: | 20 Sep 2019 02:43 |
| URI: | http://eprints.um.edu.my/id/eprint/22463 |
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