Spindle shaped Fe-Ni metal organic frameworks wrapped with f-MWCNTs for the efficacious sensing of tartrazine

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2024-05-15 DOI:10.1016/j.foodchem.2024.139634

Monisha Venkatesan, Ganesan Shanmugam, Jeevanantham Arumugam

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Abstract

A facile hydrothermal route was employed for the synthesis of iron-nickel bimetal organic frameworks (Fe-Ni bi-MOFs) and composite with an acid functionalized multi-walled carbon nanotubes (Fe-Ni MOF/f-MWCNTs) for electrochemical detection of tartrazine. The as-prepared Fe-Ni MOF/f-MWCNTs was confirmed by the several physicochemical studies. A micro spindle shaped, highly porous, and crystalline Fe-Ni MOF/f-MWCNTs was noticed. The high sensitivity and stability of Fe-Ni MOF/f-MWCNTs/GCE modified electrode was analyzed. Due to its high porosity nature, the analyte molecule effectively gets adsorbed on the modified electrode and undergo electrochemical oxidation effectively. The modified electrode exhibits low limit of detection (LOD) and limit of quantification (LOQ) as 0.04 × 10⁻⁶ mol/L and 0.13 × 10⁻⁶ mol/L towards tartrazine. These results reveal the potential applications of Fe-Ni MOF/f-MWCNTs/GCE as modified electrode material for sensitive detection of tartrazine along with its robust reproducibility, stability, and effective sensing properties.

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包裹着 f-MWCNT 的纺锤形铁-镍金属有机框架用于有效传感酒石酸

本研究采用简便的水热法合成了铁镍双金属有机框架（Fe-Ni bi-MOFs），并将其与酸功能化多壁碳纳米管（Fe-Ni MOF/f-MWCNTs）复合，用于电化学检测酒石酸。几项理化研究证实了所制备的 Fe-Ni MOF/f-MWCNTs 的有效性。研究发现，Fe-Ni MOF/f-MWCNTs 具有微纺锤形、高多孔性和结晶性。分析了 Fe-Ni MOF/f-MWCNTs/GCE 修饰电极的高灵敏度和稳定性。由于电极具有高孔隙率，分析分子能有效地吸附在改性电极上，并进行有效的电化学氧化。改性电极对酒石酸的检出限（LOD）和定量限（LOQ）分别为 0.04 × 10-6 mol/L 和 0.13 × 10-6 mol/L。这些结果表明，Fe-Ni MOF/f-MWCNTs/GCE 作为改性电极材料具有良好的重现性、稳定性和有效的传感特性，具有灵敏检测酒石酸的应用潜力。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.