基于 Au-NPs/DBTTA 纳米复合材料的新型电化学传感器用于检测抗坏血酸 (AA)

IF 1.6 4区工程技术 Q3 INSTRUMENTS & INSTRUMENTATION

Sensor Review Pub Date : 2024-08-28 DOI:10.1108/sr-05-2024-0433

Nacira Mecheri, Leila Lefrada, Messaoud Benounis, Chedia Ben Hassine, Houcine Berhoumi, Chama Mabrouk

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引用次数: 0

摘要

目的抗坏血酸是一种水溶性抗氧化剂，是人类膳食中不可或缺的成分，因其对多种疾病具有强大的抗氧化作用而闻名。近年来，非酶传感器因其简便、高效和出色的选择性而越来越受到人们的关注。本研究的目的是利用一种基于金纳米粒子 Au-NPs-1,3-di(4-bromophényl)-5-tert-butyl-1,3,5-triazinane (DBTTA) 复合材料的新型电化学非酶传感器，提出一种在水体系中检测抗坏血酸的选择性和灵敏度的方法。首先，通过叔丁胺和 a4-溴苯胺的缩合合成了 DBTTA。通过红外光谱、1H NMR 和 13C NMR 分析确定了所获得的结构。在 1-1.4 V 的电位范围内，通过循环伏安法用溶于水溶液中的 10-1 M DBTTA 对玻璃碳电极（GCE）进行改性。然后采用计时变阻器技术在 DBTTA/GCE 上沉积金-NPs。使用 SWV 研究修饰电极（DBTTA/Au-NPs/GCEs）的电化学行为。为了观察纳米颗粒的影响，在有金纳米颗粒（Au-NPs）和没有金纳米颗粒（Au-NPs）的修饰电极上用 SWV 分析了缓冲溶液中的抗坏血酸。结果表明，DBTTA/Au-NPs/GCE 显示出更好的电分析结果，其检测限为 10-5 M，在 5 × 10-3 M 至 1 × 10-1 范围内，电极与 AA 浓度的对数成正比，相关参数非常好。对所提出的传感器进行了橙子中 AA 的识别测试，结果令人满意。

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A novel Au-NPs/DBTTA nanocomposite-based electrochemical sensor for the detection of ascorbic acid (AA)

Purpose

Ascorbic acid, a water-soluble antioxidant, is an essential component of the human diet and is known for its potent antioxidant properties against several diseases. In recent years, there has been increasing interest in the development of nonenzymatic sensors due to their simplicity, efficiency and excellent selectivity. The aim of this study is to present a selective and sensitive method for the detection of ascorbic acid in aqueous system using a new electrochemical non-enzymatic sensor based on a gold nanoparticles Au-NPs-1,3-di(4-bromophényl)-5-tert-butyl-1,3,5-triazinane (DBTTA) composite.

Design/methodology/approach

Using the square wave voltammetry (SWV) technique, a series of Au-NPs-DBTTA composites were successfully developed and investigated. First, DBTTA was synthesized via the condensation of tert-butylamine and a4-bromoaniline. The structure obtained was identified by IR, 1H NMR and 13C NMR analysis. A glassy carbon electrode (GCE) was modified with 10–1 M DBTTA dissolved in an aqueous solution by cyclic voltammetry in the potential range of 1–1.4 V. Au-NPs were then deposited on the DBTTA/GCE by a chronoamperometric technique. SWV was used to study the electrochemical behavior of the modified electrode (DBTTA/Au-NPs/GCEs). To observe the effect of nanoparticles, ascorbic acid in a buffer solution was analyzed by SWV at the modified electrode with and without gold nanoparticles (Au-NPs).

Findings

The DBTTA/Au-NPs/GCE showed better electroanalytical results. The detection limit of 10–5 M was obtained and the electrode was proportional to the logarithm of the AA concentration in the range of 5 × 10⁻³ M to 1 × 10⁻¹ with very good correlation parameters.

Originality/value

It was also found that the elaborated sensor exhibited reproducibility and excellent selectivity against interfering molecules such as uric acid, aspartic acid and glucose. The proposed sensor was tested for the recognition of AA in orange, and satisfactory results were obtained.

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来源期刊

Sensor Review 工程技术-仪器仪表

CiteScore

3.40

自引率

6.20%

发文量

审稿时长

3.7 months

期刊介绍： Sensor Review publishes peer reviewed state-of-the-art articles and specially commissioned technology reviews. Each issue of this multidisciplinary journal includes high quality original content covering all aspects of sensors and their applications, and reflecting the most interesting and strategically important research and development activities from around the world. Because of this, readers can stay at the very forefront of high technology sensor developments. Emphasis is placed on detailed independent regular and review articles identifying the full range of sensors currently available for specific applications, as well as highlighting those areas of technology showing great potential for the future. The journal encourages authors to consider the practical and social implications of their articles. All articles undergo a rigorous double-blind peer review process which involves an initial assessment of suitability of an article for the journal followed by sending it to, at least two reviewers in the field if deemed suitable. Sensor Review’s coverage includes, but is not restricted to: Mechanical sensors – position, displacement, proximity, velocity, acceleration, vibration, force, torque, pressure, and flow sensors Electric and magnetic sensors – resistance, inductive, capacitive, piezoelectric, eddy-current, electromagnetic, photoelectric, and thermoelectric sensors Temperature sensors, infrared sensors, humidity sensors Optical, electro-optical and fibre-optic sensors and systems, photonic sensors Biosensors, wearable and implantable sensors and systems, immunosensors Gas and chemical sensors and systems, polymer sensors Acoustic and ultrasonic sensors Haptic sensors and devices Smart and intelligent sensors and systems Nanosensors, NEMS, MEMS, and BioMEMS Quantum sensors Sensor systems: sensor data fusion, signals, processing and interfacing, signal conditioning.