A metal organic framework, UiO-66-NH2, based on a molybdenum Schiff base complex for the efficient electrochemical determination of diphenoxylate.

IF 2.7 3区 化学 Q2 CHEMISTRY, ANALYTICAL Analytical Methods Pub Date : 2024-12-20 DOI:10.1039/d4ay01957a
Samira Saeednia, Masoud Rezaeinasab, Parvaneh Iranmanesh, Sobhan Abbasi Razgaleh
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引用次数: 0

Abstract

Diphenoxylate, an agonist and opioid agent, is applied to enhance the activity of the circular muscle of the intestine. In this work, we prepared a novel electrochemical sensor for the determination of diphenoxylate based on a modified UiO-66-NH2 metal-organic framework (UiO-66-NH2 MOF) using a molybdenum Schiff base complex and NiS nanoparticles (NiSnp) in a carbon paste electrode (CPE). The UiO-66-NH2 MOF and UiO-66@Schiff-base-Mo were studied through advanced analysis techniques, such as X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX) and transmission electron microscopy (TEM), to reveal the inherent characteristics of the material. The results also showed that the morphology and structure of the UiO-66-NH2 MOF were maintained after surface modification. The electrochemical properties of the proposed modified electrode (NiSnp/MOF@Mo/CPE) were characterized using cyclic voltammetry (CV). Also, a differential pulse voltammetry (DPV) method was employed for diphenoxylate determination with NiSnp/MOF@Mo/CPE. A linear range was achieved from 1.0 to 55.0 μM and 65.0 to 125.0 μM, and the detection limit was found to be 0.34 μM. The capability of the fabricated sensors based on NiSnp/MOF@Mo/CPE was investigated through diphenoxylate determination in real samples.

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来源期刊
Analytical Methods
Analytical Methods CHEMISTRY, ANALYTICAL-FOOD SCIENCE & TECHNOLOGY
CiteScore
5.10
自引率
3.20%
发文量
569
审稿时长
1.8 months
期刊介绍: Early applied demonstrations of new analytical methods with clear societal impact
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