Abstract
(E)-Methyl-N′-nitrobenzylidene-benzenesulfonohydrazide (MNBBSH) compounds were synthesized using a condensation procedure from the derivatives of nitrobenzaldehyde and 4-Methyl-benzenesulfonylhydrazine, which crystallized in ethanol and methanol as well as characterized by FTIR, UV-Vis, 1H-NMR, and 13C-NMR. MNBBSH structure was confirmed using a single crystal X-ray diffraction technique and used for the detection of selective yttrium ion (Y3+) by I-V system. A thin layer of MNBBSH was deposited onto a glassy carbon electrode (GCE) with 5% nafion for the sensitive and selective Y3+ sensor. The modified MNBBSH/GCE sensor is exhibited the better electrochemical performances such as sensitivity, limit of detection (LOD), linear dynamic range (LDR), limit of quantification (LOQ), short response time, and long term storage ability towards the selective metal ion (Y3+). The calibration curve of 2-MNBBSH/GCE sensor was plotted at +1.1 V over a broad range of Y3+ concentration. Sensitivity, LOD, LDR and LOQ of the fabricated sensor towards Y3+ were calculated from the calibration curve and found as 1.90 pAμM−1 cm−2, 10.0 pM, 1.0 nM~1.0 mM and 338.33 mM respectively. The 2-MNBBSH/Nafion/GCE sensor was applied to the selective determination of Y3+ in spiked samples such as industrial effluent and real water samples from different sources, and found acceptable and reasonable results.
Highlights
Organic molecules having electron donor functional group is an immense attention in chemistry due to enormous number of applications in biological, catalysis, environmental, medicinal, and organometallic area by binding of diverse metal constituents1–4
One singlet observed at δ 2.38 shows three proton and this may be due to CH3. 13C-NMR spectra were recorded and most of the carbon atoms was found in the aromatic region (Figs S1–6)
FTIR spectroscopy has been examined at 4000–400 cm−1 for the structure by defining functional groups via different bending, and stretching peaks observed at a particular region in the spectra
Summary
Organic molecules having electron donor functional group is an immense attention in chemistry due to enormous number of applications in biological, catalysis, environmental, medicinal, and organometallic area by binding of diverse metal constituents1–4. I-V method was carried out in order to detect Y3+ at a selective point using the modified 2-MNBBSH/GCE by Keithley electrometer (6517A, USA). The modified GCE and platinum (Pt) wire were used as a working, and counter electrode successively to examine the I-V responses (Fig. 1).
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