分析化学2024，Vol.52Issue(12)：1886-1895,中插14-中插17,14.DOI:10.19756/j.issn.0253-3820.241217
金纳米颗粒/沸石咪唑酯框架纳米复合材料修饰碳布的制备及电化学检测亚硝酸盐
Gold Nanoparticles/Zeolitic Imidazolate Framework-67 Modified Carbon Cloth Electrode for Determination of Nitrite
摘要
Abstract
Excessive nitrite can cause serious harm to human health.In this work,gold nanoparticles/zeolitic imidazolate framework-67(AuNPs/ZIF-67)nanocomposite with three-dimensional structure was designed and synthesized on carbon cloth(CC),and a AuNPs/ZIF-67 modified CC electrode was then prepared for detection of nitrite.The interleaved foliated ZIF-67 nanosheets were synthesized on CC,and then coral-like AuNPs were coated on ZIF-67 modified CC by electrodeposition.The morphology,composition and surface area of AuNPs/ZIF-67/CC were characterized by scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD)and N2 adsorption-desorption test.The prepared electrode combined the high catalytic performance of AuNPs with the morphology of ZIF-67,significantly increasing the surface area and electrocatalytic activity of the electrode.The oxidation potential of NO2-on AuNPs/ZIF-67/CC electrode decreased significantly,and the oxidation current increased significantly,showing excellent response performance.Cyclic voltammetry(CV)was used to detect NO2-with linear ranges of 0.005-5.0 mmol/L and 5.0-24.0 mmol/L,and limit of detection(LOD,3σ/S)of 1.26 μmol/L.Chronoamperometry(i-t)was also used to detect NO2-,with linear ranges of 1-800 μmol/L and 800-1800 μmol/L,and LOD(3σ/S)of 0.08 μmol/L.In addition,AuNPs/ZIF-67/CC prepared here showed good anti-interference,repeatability and stability,and could be used to detect NO2-in real samples.关键词
碳布/金纳米颗粒/沸石咪唑酯框架结构材料/电化学/亚硝酸盐传感器Key words
Carbon cloth/Gold nanoparticles/Zeolitic imidazolate framework/Electrochemistry/Nitrite sensor引用本文复制引用
吴丽荣,肖然,庄贞静..金纳米颗粒/沸石咪唑酯框架纳米复合材料修饰碳布的制备及电化学检测亚硝酸盐[J].分析化学,2024,52(12):1886-1895,中插14-中插17,14.基金项目
泉州市自然科学基金项目(No.2023C021YR)和泉州市科技计划项目(No.2021N129S)资助. Supported by the Quanzhou Natural Science Foundation(No.2023C021YR)and the Quanzhou Science and Technology Plan Project(No.2021N129S). （No.2023C021YR）
