| Autor: |
Hussain M; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan., Nafady A; Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.; Chemistry Department, Faculty of Science, Sohag University, Sohag 82524, Egypt., Avcı A; Department of Mechanical Engineering, Selcuk University, Konya 42079, Turkey., Pehlivan E; Department of Chemical Engineering, Selcuk University, Konya 42079, Turkey., Nisar J; National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar 25120, Pakistan., Sherazi STH; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan., Balouch A; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan., Shah MR; HEJ Research Institute of Chemistry, International Center for Chemical and Biological Center, University of Karachi, Karachi 75270, Pakistan., Almaghrabi OA; Department of Biological Sciences, Faculty of Science, University of Jeddah, Jeddah 21959, Saudi Arabia., Ul-Haq MA; HEJ Research Institute of Chemistry, International Center for Chemical and Biological Center, University of Karachi, Karachi 75270, Pakistan. |
| Abstrakt: |
We report a novel, simple, efficient, and green protocol for biogenic synthesis of silver nanoparticles (AgNPs) in aqueous solution using clove ( Syzygium aromaticum ) extract as a reducing and protecting agent. Ultraviolet-visible (UV-Vis) spectroscopy was employed to monitor the localized surface plasmon resonance (LSPR) band of clove extract-derived AgNPs prepared under various conditions. Fourier-transform infrared (FTIR) spectroscopy analysis provided information about the surface interaction of the clove extract with the AgNPs. Ultrahigh-resolution transmission electron microscopy (UHRTEM) results confirmed the formation of spherical, uniformly distributed clove extract-capped AgNPs with sizes in the range of 2-20 nm (average size: 14.4 ± 2 nm). Powder X-ray diffractometry analysis (PXRD) illustrated the formation of pure crystalline AgNPs. These AgNPs were tested as a colorimetric sensor to detect trace amounts of vinclozolin (VIN) by UV-Vis spectroscopy for the first time. The AgNP-based sensor demonstrated very sensitive and selective colorimetric detection of VIN, in the range of 2-16 µM ( R 2 = 0.997). The developed sensor was green, simple, sensitive, selective, economical, and novel, and could detect trace amounts of VIN with limit of detection (LOD) = 21 nM. Importantly, the sensor was successfully employed for the determination of VIN in real water samples collected from various areas in Turkey. |
