The influence of preparation method on the efficiency of clay-carbon composites for detection of 4- aminoantipyrine

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-04-15 DOI:10.1016/j.matchemphys.2025.130881

Gordana Stevanović , Zorica Mojović , Danica Bajuk Bogdanović , Tanja Barudžija , Nataša Jović-Jovičić , Predrag Banković , Marija Ajduković

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Abstract

Smectite-rich bentonite clay was used to synthesize a chitosan-smectite nanocomposite. The resulting nanocomposite underwent two carbonation procedures: air-limitation pyrolysis and hydrothermal treatment. The obtained clay-carbon composites were characterized using XRD analysis, FT-IR, and Raman spectroscopy. The point of zero charge was determined for both composites. Electrochemical characterization was performed via cyclic voltammetry and electrochemical impedance spectroscopy. The electrochemical activity of carbon paste electrodes modified with the clay-carbon composites was evaluated for 4-aminoantipyrine (4-AAP) detection in Britton-Robinson buffer (pH 3–9) using cyclic voltammetry. The sensor based on the hydrothermally synthesized composite was further tested by square wave voltammetry, achieving a sensitivity of 0.0125 μA/μM and a detection limit (LOD) of 0.4 μM. The sensor demonstrated satisfactory performance when tested in real urine samples.

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制备方法对粘土-碳复合材料检测4-氨基安替比林效率的影响

利用富蒙脱石膨润土合成了壳聚糖-蒙脱石纳米复合材料。所得到的纳米复合材料经过两种碳化工艺：气限热解和水热处理。采用XRD、FT-IR和拉曼光谱对所制得的粘土-碳复合材料进行了表征。确定了两种复合材料的零电荷点。通过循环伏安法和电化学阻抗谱法进行了电化学表征。采用循环伏安法评价了粘土-碳复合材料修饰的碳糊电极在布里顿-罗宾逊缓冲液（pH 3-9）中检测4-氨基安替比林（4-AAP）的电化学活性。采用方波伏安法测试了基于水热合成的复合材料的传感器，灵敏度为0.0125 μA/μM，检测限（LOD）为0.4 μM。该传感器在实际尿样中测试时表现出令人满意的性能。

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来源期刊

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.