l-cysteine protected copper nanoparticles as colorimetric sensor for mercuric ions

• Published in: Talanta (Oxford) Vol. 130; pp. 415 - 422
• Main Authors: Soomro, Razium A., Nafady, Ayman, Sirajuddin, Memon, Najma, Sherazi, Tufail H., Kalwar, Nazar H.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.12.2014
• Subjects: Amino acid; aqueous solutions; Biosensing Techniques - methods; Colorimetric sensor; colorimetry; Colorimetry - methods; Copper - chemistry; Copper nanoparticles; cysteine; Cysteine - chemistry; detection limit; Fourier transform infrared spectroscopy; ions; l-cysteine; Limit of Detection; Mercuric ions; mercury; Mercury - analysis; Metal Nanoparticles - chemistry; Microscopy, Electron, Transmission; Particle Size; protocols; rivers; Spectrophotometry; Spectroscopy, Fourier Transform Infrared; transmission electron microscopy; ultraviolet-visible spectroscopy; Water - chemistry; X-ray diffraction; l-cysteine; Amino acid; Colorimetric sensor; Copper nanoparticles; Mercuric ions

This report demonstrates a novel, simple and efficient protocol for the synthesis of copper nanoparticles in aqueous solution using l-cysteine as capping or protecting agent. UV–visible (UV–vis) spectroscopy was employed to monitor the LSPR band of l-cysteine functionalized copper nanoparticles (Cys...