1. Efficient development and Characterisation of Asp-AuNPs based colorimetric sensor for the detection of Ag(I) from real water samples.
- Author
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Memon, Safia Sanam, Sirajuddin, Memon, Shahabuddin, Kumar, Ameet, and Memon, Nusrat Shahab
- Subjects
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WATER sampling , *GOLD nanoparticles , *ASPIRIN , *SILVER ions , *DETECTORS , *NANOPARTICLE size - Abstract
In this work, we develop an effective and efficient method for the preparation of gold nanoparticles (AuNPs). In this method, we used acetylsalicylic acid named aspirin (Asp) as a reducing agent. However, there is no need for any stabiliser to stabilise the reaction. The prepared nanoparticles were characterised by using FT-IR, UV-Visible, AFM, and XRD. These Asp-AuNPs nanoparticles were applied for the sensitive and selective determination of silver ions (Ag+). The estimated average size of gold nanoparticles was 33 nm. The sensor responds in the linear range of 0.002–0.015 µM. The sensor response towards other metals i.e. Li+, Cu2+, Ni2+, Co2+, Pb2+, Zn2+, Fe2+, Cr3+ and As3+was obtained negligible. The limit of detection (LOD) of the prepared sensor was found up to 0.046 nM. The prepared colorimetric sensor was effectively applied to determine Ag+ ions in real water samples obtained from jewellery shops from different places of Hyderabad, Sindh Pakistan. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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