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Pyrene-1-carboxaldehyde hydrazone modified mesoporous silica foam-based strategy for efficient and accurate electroanalysis of copper in food samples

文献类型： 外文期刊

作者： Liang, Jing 1 ; Li, Hu 2 ; Huang, Ke-jing 3 ; Ning, Dejiao 1 ; Yan, Feiyan 1 ; Chen, Weiwei 1 ; Xie, Liping 1 ; Wang, Yanli 1 ; Jiang, Cuiwen 1 ; Tang, Li 1 ; Li, Tao 1 ; Huang, Xiaochuan 1 ; Ya, Yu 1 ;

作者机构： 1.Guangxi Acad Agr Sci, Inst Agr Prod Qual Safety & Testing Technol, Nanning 530007, Peoples R China

2.Guangxi Acad Agr Sci, Rice Res Inst, Guangxi Key Lab Rice Genet & Breeding, Nanning 530007, Peoples R China

3.Guangxi Minzu Univ, Sch Chem & Chem Engn, Nanning 530008, Peoples R China

关键词： Mesoporous silica foam; Organic ligand; Electrochemical sensor; Cu 2+detection; Food analysis

期刊名称：JOURNAL OF FOOD COMPOSITION AND ANALYSIS （ 影响因子：4.0； 五年影响因子：4.1 ）

ISSN： 0889-1575

年卷期： 2024 年 134 卷

页码：

收录情况： SCI

摘要： Functionalization of mesoporous silica foam (MSF) is a feasible strategy to enhance the electrocatalytic performance of designed sensors. Herein, an organic ligand, pyrene-1-carboxaldehyde hydrazone (PCH), is used to functionalize MSF and as a modifier for carbon paste electrodes to construct a Cu2+ detection sensor. The experimental results demonstrate that the PCH functionalization can significantly enhance the sensor's sensitivity and selectivity. Under optimized conditions, the linear range of the prepared electrochemical sensor are 0.0050-1.0 mu M and 1.0-10 mu M, and the Cu2+ detection limit is 0.0020 mu M. The developed sensor is applied to detect Cu2+ content in standard rice control samples, and the obtained results fall well within the range of marked values. Moreover, the recoveries of the standard addition method are 98.4-102.6 %, suggesting the developed sensor's good accuracy and practicability.

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