Fabrication of ZnWO4/Carbon Black Nanocomposites Modified Glassy Carbon Electrode for Enhanced Electrochemical Determination of Ciprofloxacin in Environmental Water Samples

Abstract

The major problem facing humanity in the world right now is the sustainable provision of water and electricity. Therefore, it is essential to advance methods for the long-term elimination or removal of organic contaminants in the biosphere. Ciprofloxacin (CIP) is one of the most harmful pollutants affecting human health through improper industrial usage. In this study, a zinc tungsten oxide (ZnWO4) nanomaterial was prepared with a simple hydrothermal synthesis. The ZnWO4/Carbon black nanocomposites were fabricated for the determination of CIP. The nanocomposites were characterized by field emission scanning electron microscopy, energy dispersion X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and electrochemical impedance spectroscopy. Electrochemical studies were done using cyclic voltammetry and differential pulse voltammetry methods. Based on the electrode preparation, the electrochemical detection of CIP was carried out, producing exceptional electrocatalytic performance with a limit of detection of 0.02 μM and an excellent sensitivity of (1.71 μA μM−1 cm−2). In addition, the modified electrode displayed great selectivity and acceptable recoveries in an environmental water sample analysis for CIP detection of 97.6% to 99.2%. The technique demonstrated high sensitivity, selectivity, outstanding consistency, and promise for use in ciprofloxacin detection. Ciprofloxacin was discovered using this brand-new voltammetry technique in a water sample analysis.

Lutetium Copper@Hexagonal Boron Nitride Nanocomposite Electrode System for Sensing and Signalling Ciprofloxacin

“…These electrodes were fabricated independently by the same procedure. This was evaluated by SWV responses for the oxidation of 10 μM CIP in N-prGO/CPE DPV 0.10-10 0.040 [61] ChCl/CPE SWV 0.005-200 0.004 [62] GO/SPCE DPV 1.0-8.0 0.300 [63] CNOs/PANI-NTs/GCE DPV 0.05-80.0 0.001 [15] ZnWO 4 /CB/GCE DPV 0.0-100 0.020 [64] Lu-Cu@h-BN/GCE SWV 0.05-100 0.030 This work 0.1 M PBS (pH 5.0) (Figure S6). The obtained RSD for the oxidation peak current responses was of 10 %, suggesting that the proposed sensor has an excellent reproducibility for the electro-oxidation of CIP.…”

Eco-friendly, sensitive and inventive first derivative synchronous spectrofluorimetric determination of ciprofloxacin and phenylephrine in their pure form, single and combined eye drops

“…Several analytical techniques have been evolved for analyzing CFX as; some of analytical methods were summarized in the reported review [ 6 ], spectrophotometry [ 7 – 12 ], spectrofluorimetry [ 13 , 14 ], electrochemistry [ 15 – 17 ], high-performance liquid chromatography [ 18 – 20 ], capillary electrophoresis [ 21 ] and titration [ 22 ].…”

Amino‐Montmorillonite Crystalline Clay as Electrode Modifier for Electrochemical Detection of Ciprofloxacin in Presence of Cetyltrimethylammonium Bromide

“…[18] Taking this into consideration, recent research works have been reported concerning the advancement of electrochemical sensors designed for the detection of ciprofloxacin. Various electrode materials have been explored in these studies, including f-MWCNTs-Polydopamine, [19] reduced graphene oxide/poly(phenol red), [20] ZnWO 4 /carbon black nanocomposites, [21] nitrogen-doped porous reduced graphene oxide, [22] and a nanostructured lanthanum oxide interface substituted with reduced graphene oxide. [23] In a recent review, a succession of electroanalytical methodologies directed toward the detection of CF were exposed and documented by Crapnell et al, [24] demonstrating the resort to electrochemical sensors for the quantification of CF.…”