基于MnFe2O4/石墨烯修饰玻碳电极制备新型电化学传感器用于双酚A的灵敏检测

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中文摘要：铁酸锰(MnFe2O4)具有制备简单、电阻率高、晶体对称性强以及铁基和锰基材料相结合的特点。为此开发了一种利用石墨烯和MnFe2O4纳米复合材料修饰玻碳电极(GCE)的电化学传感器，该传感器能够非常有效且灵敏地检测双酚A(BPA)。通过简单的一锅溶剂热法将MnFe2O4微球固定在石墨烯纳米片上，合成了MnFe2O4/石墨烯(GR)。通过扫描电子显微镜(SEM)、傅立叶变换红外光谱(FT-IR)、X射线衍射(XRD)、X光电子能谱(XPS)对MnFe2O4/GR纳米复合材料的形态和结构进行了表征。利用循环伏安法(CV)、电化学阻抗谱法(EIS)和差分脉冲伏安法(DPV)对改性材料的电化学性能进行了比较研究。在最佳条件下，所提出的检测BPA的电化学传感器的线性范围为 0。8～400 μmol/L，检测限为0。0235 μmol/L(S/N=3)，具有高灵敏度、良好的选择性和高稳定性。将该传感器用于测量实际水样中BPA的含量，回收率为97。94%～104。56%。本文研究结果基于MnFe2O4/石墨烯的合成为实际应用中BPA的电化学检测提供了更多的机会。

外文标题：Fabrication of a novel electrochemical sensor based on MnFe2O4/graphene modified glassy carbon electrode for the sensitive detection of bisphenol A

外文摘要：Manganese ferrite(MnFe2O4)has the advantages of simple preparation,high resistivity,and high crystal symmetry.Herein,we have developed an electrochemical sensor utilizing graphene and MnFe2O4 nanocomposites modified glassy carbon electrode(GCE),which is very efficient and sensitive to detect bisphenol A(BPA).MnFe2O4/graphene(GR)was synthesized by immobilizing the MnFe2O4 microspheres on the graphene nanosheets via a simple one-pot solvothermal method.The morphology and structure of the MnFe2O4/GR nanocomposite have been characterized through scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).In addition,electrochemical properties of the modified materials are comparably explored by means of cyclic voltammetry(CV),electrochemical impedance spectroscopy(EIS)and differential pulse voltammetry(DPV).Under the optimal conditions,the proposed electrochemical sensor for the detection of BPA has a linear range of 0.8-400 μmol/L and a detection limit of 0.0235 μmol/L(S/N=3)with high sensitivity,good selectivity and high stability.In addition,the proposed sensor was used to measure the content of BPA in real water samples with a recovery rate of 97.94%-104.56%.At present,the synthesis of MnFe2O4/GR provides more opportunities for the electrochemical detection of BPA in practical applications.

外文关键词：

MnFe2O4grapheneelectrochemical sensorbisphenol A

作者：

高丝雷、唐建设、项丽、龙金威

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作者单位：

Department of Environmental and Energy Engineering,Anhui Jianzhu University,Hefei 230601,China

Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse,Hefei 230601,China

关键词：

MnFe2O4 石墨烯电化学传感器双酚A

基金：

Natural Science Foundation of Anhui Province,ChinaInnovation Team Project of Anhui Provincial Department of Education,ChinaCollaborative Innovation Project of Anhui Provincial Department of Education,ChinaDoctoral Scientific Research Startup Foundation of Anhui Jianzhu University,China

项目编号：

2108085ME1842022AH010019GXXT-2021-0572020QDZ36

出版年：

2024

DOI：

10.1007/s11771-024-5689-1

中南大学学报(英文版)

中南大学

中南大学学报(英文版)

CSTPCDEI

影响因子：0.47

ISSN：2095-2899

年,卷(期)：2024.31(6)