Fabrication of an electrochemical sensor based on metal–organic framework ZIF-8 for quantitation of silver ions: optimizing experimental conditions using central composite design (CCD)

Abstract

ZIF-8 was synthesized and carbon paste electrodes (CPEs) modified with this metal–organic framework were utilized for quantitation of silver(i) by the differential pulse anodic stripping voltammetry (DPASV) technique.

Optimization of uric acid detection with Au nanorod-decorated graphene oxide (GO/AuNR) using response surface methodology

“…The latter agrees with the predicted R 2 of 0.9403, implying a good correlation between the actual and predicted values. 26,29 The actual and predicted UA oxidation currents are shown in Table 2 for various sets of independent variables (GO and AuNR). The experimental (actual) values are present a satisfactory t compared to the predicted values.…”

“… 25 Furthermore, CCD is among the most significant RSMs for designing an experiment with the ability to display data on variable interactions and the potential to predict optimal conditions to achieve a satisfactory performance of the sensor. 26 …”

Engineering of metal–organic framework nanomaterials on long-period fiber grating for acetone vapor sensing

“…7 ZIF-8 based uorescent sensors, microbalance sensors, electrochemical sensors, and optical ber/waveguide sensors have been developed for highly sensitive and rapid detection of various toxic and hazardous vapors, such as formaldehyde, explosives, aromatic hydrocarbons, etc. [8][9][10][11][12][13][14][15][16][17][18][19] Compared with traditional sensors, optical ber sensors (OFSs), which employ optical bers to achieve sensing with light, can offer a number of unique advantages, such as absolute electrical insulation, immunity to electromagnetic interference, non-invasiveness, corrosion resistance, and high sensitivity. OFSs also allow long-distance monitoring and interrogation of sensors.…”

“…7 ZIF-8 based fluorescent sensors, microbalance sensors, electrochemical sensors, and optical fiber/waveguide sensors have been developed for highly sensitive and rapid detection of various toxic and hazardous vapors, such as formaldehyde, explosives, aromatic hydrocarbons, etc. 8–19…”

Zeolitic Imidazolate Framework-8/Polyaniline Nanocomposite Based Electrochemical Sensor for Sensitive Detection of Imidaclothiz

“…In addition to remarkable stability in water, nano-sized ZIF-8 usually has large numbers of exposed active sites and better mass diffusion of the analyte, which can help to improve the electrocatalytic activity and detection sensitivity [ 17 , 18 ]. There are some electrochemical sensors based on ZIF-8 have been reported to detect heavy metal ions [ 19 ], glucose [ 20 ], pentachlorophenol [ 21 ], etc. Nevertheless, the direct application of ZIF-8 in electrochemical sensor area is usually limited by its poor conductivity [ 22 ].…”