Electrocatalytic Effect of Al2O3 Supported on Clay in Oxidizing of Ibuprofen at Graphite Electrode

IF 0.7 Q4 CHEMISTRY, ANALYTICAL

Methods and Objects of Chemical Analysis Pub Date : 2021-01-01 DOI:10.17721/moca.2021.81-87

Hayat El Ouafy, T. E. Ouafy, M. Oubenali, A. Haimouti, A. Gamouh, M. Mbarki

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引用次数: 2

Abstract

In this work, the electro-catalytic oxidation of ibuprofen was studied using aluminum oxide supported on clay (Clay/Al2O3). The latter has been successfully prepared by impregnating aluminum particles in the clay by heat treatment. The electro-catalytic performances of Clay/Al2O3 for the oxidation of ibuprofen were studied using cyclic voltammetry (CV), chronoamperometry, and differential pulse voltammetry (DPV) in 0.1 mol L-1 of the phosphate buffer (pH = 7). It has been shown that the proposed catalyst exhibits remarkably an electro-catalytic effect performance vis-a-vis the oxidation of ibuprofen. In addition, the peak oxidation currents depend linearly on the ibuprofen concentration in the wide ranges from 1.0·10-3 mol L-1 to 1.0·10-6 mol L-1 with a detection limit of 1.95·10-8 mol L-1 and response time of 30 second. Possible interferences were evaluated in 1.0·10-5 mol L-1 ibuprofen. The proposed catalyst also indicated suitable repeatability and stability. Besides, the proposed CPE-Clay/Al2O3 has been successfully applied for ibuprofen analysis in human blood with good recoveries.

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粘土负载氧化铝在石墨电极上氧化布洛芬的电催化作用

本文研究了粘土负载氧化铝(clay /Al2O3)对布洛芬的电催化氧化反应。通过热处理将铝粒浸渍在粘土中，成功地制备了铝粒粘土。在0.1 mol L-1的磷酸缓冲液(pH = 7)中，采用循环伏安法(CV)、计时伏安法(chronopermetry)和差分脉冲伏安法(DPV)研究了Clay/Al2O3对布洛芬氧化的电催化性能。结果表明，该催化剂对布洛芬的氧化表现出显著的电催化效果。在1.0·10-3 ~ 1.0·10-6 mol L-1范围内，氧化电流峰值与布洛芬浓度呈线性关系，检测限为1.95·10-8 mol L-1，响应时间为30 s。在1.0·10-5 mol L-1布洛芬溶液中评价可能的干扰。该催化剂具有良好的重复性和稳定性。此外，CPE-Clay/Al2O3已成功应用于人血中布洛芬的分析，回收率良好。

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来源期刊

Methods and Objects of Chemical Analysis CHEMISTRY, ANALYTICAL-

CiteScore

1.00

自引率

14.30%

发文量

期刊介绍： The journal "Methods and objects of chemical analysis" is peer-review journal and publishes original articles of theoretical and experimental analysis on topical issues and bio-analytical chemistry, chemical and pharmaceutical analysis, as well as chemical metrology. Submitted works shall cover the results of completed studies and shall make scientific contributions to the relevant area of expertise. The journal publishes review articles, research articles and articles related to latest developments of analytical instrumentations.