ZIF-67/g-C3N4修饰电极电化学测定双氯芬酸

IF 2.8 4区工程技术 Q2 CHEMISTRY, APPLIED

Adsorption Science & Technology Pub Date : 2021-09-02 DOI:10.1155/2021/7896286

Dang Thi Ngoc Hoa, N. T. Tu, L. Son, L. V. T. Son, Tran Thanh Tam Toan, Pham Le Minh Thong, D. N. Nhiem, P. K. Lieu, Dinh Quang Khieu

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引用次数: 8

摘要

采用咪唑酸分子筛框架-67/氮化石墨碳(ZIF-67/g-C3N4)修饰的玻碳电极，采用表面差分脉冲伏安法测定双氯芬酸(DCF)。采用自组装方法合成了不同质量比组分的ZIF-67/g-C3N4。通过x射线衍射、扫描电镜(SEM)、edx作图和氮吸附/脱附等温线对所得材料进行了表征。峰电流随DCF浓度在0.2 ~ 2.2 μmol·L−1范围内呈线性变化，检出限为0.071 μmol·L−1。修饰电极对DCF表现出可接受的重复性、再现性和选择性。该电极无需预处理即可测定人尿中的DCF，其结果与HPLC测定结果相当。

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Electrochemical Determination of Diclofenac by Using ZIF-67/g-C3N4 Modified Electrode

A facial differential pulse voltammetric procedure using a glassy carbon electrode modified with zeolite imidazolate framework-67/graphitic carbon nitride (ZIF-67/g-C3N4) for the diclofenac (DCF) determination is demonstrated. ZIF-67/g-C3N4 with different mass ratios of the components was synthesized in a self-assembly process. The obtained materials were characterized by using X-ray diffraction, scanning electron microscopy (SEM), EDX-mapping, and nitrogen adsorption/desorption isotherms. The peak current varies linearly with the DCF concentration in the range of 0.2–2.2 μmol·L−1 and has a detection limit of 0.071 μmol·L−1. The modified electrode exhibits acceptable repeatability, reproducibility, and selectivity towards DCF. The proposed electrode allows determining DCF in human urine without pretreatment, and the results are comparable with those determined with HPLC.

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来源期刊

Adsorption Science & Technology 工程技术-工程：化工

CiteScore

5.00

自引率

10.30%

发文量

181

审稿时长

4.5 months

期刊介绍： Adsorption Science & Technology is a peer-reviewed, open access journal devoted to studies of adsorption and desorption phenomena, which publishes original research papers and critical review articles, with occasional special issues relating to particular topics and symposia.