| Autor: |
Hyder A; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan. ayazmemon33@usindh.edu.pk., Ali A; State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China. jyang@ipe.ac.cn.; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China., Buledi JA; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan. ayazmemon33@usindh.edu.pk., Memon R; Sabanci University, SUNUM Nanotechnology Research and Application Center, Tuzla, 34956, Istanbul, Turkey., Al-Anzi BS; Department of Environmental Sciences, Kuwait University, P.O. Box 5969, Safat, 13060, Kuwait. bader.alanzi@ku.edu.kw., Memon AA; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan. ayazmemon33@usindh.edu.pk., Kazi M; Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box-2457, Riyadh 11451, Saudi Arabia., Solangi AR; National Centre of Excellence in Analytical Chemistry, University of Sindh, Jamshoro 76080, Pakistan. ayazmemon33@usindh.edu.pk., Yang J; State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering (IPE), Chinese Academy of Sciences, Beijing 100F190, China. jyang@ipe.ac.cn.; University of the Chinese Academy of Sciences, 19A Yuquan Road, Beijing 100049, China., Thebo KH; Institute of Metal Research (IMR), Chinese Academy of Science, 2 Wenhua Rood, Shenyang, China. khalidthebo@yahoo.com. |
| Abstrakt: |
Herein, NiO nanoparticles (NPs) functionalized with a para -hexanitrocalix[6]arene derivative ( p -HNC6/NiO) were synthesized by using a facile method and applied as a selective electrochemical sensor for the determination of bisphenol S (BPS) in real samples. Moreover, the functional interactions, phase purities, surface morphologies and elemental compositions of the synthesized p -HNC6/NiO NPs were investigated via advanced analytical tools, such as Fourier-transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX). Additionally, the synthesized p -HNC6/NiO NPs were cast on the surface of a bare glassy carbon electrode (GCE) via a drop casting method, which resulted in uniform deposition of p -HNC6/NiO/GCE over the surface of the GCE. Additionally, the developed p -HNC6/NiO/GCE sensor demonstrated an outstanding electrochemical response to BPS under optimized conditions, including a supporting electrolyte, a Briton-Robinson buffer electrolyte at pH 4, a scan rate of 110 mV s -1 and a potential window of between -0.2 and 1.0 V. The wide linear dynamic range was optimized to 0.8-70 μM to obtain a brilliant linear calibration curve for BPS. The limit of detection (LOD) and limit of quantification (LOQ) of the developed sensor were estimated to be 0.0059 and 0.019 μM, respectively, which are lower than those of reported sensors for BPS. The feasibility of the developed method was successfully assessed by analyzing the content of BPS in waste water samples, and good recoveries were achieved. |
