BiOI/g-C_(3)N_(4)修饰电极伏安法检测磺胺甲噁唑  

Detection of sulfamethoxazole by cyclic voltammetric method based on BiOI/gC_(3)N_(4) modified electrode

作　　者：武天恒 刘蕊[1] 韩雪 刘日嘉 孙源 WU Tianheng;LIU Rui;HAN Xue;LIU Rijia;SUN Yuan(Center of Pharmaceutical Engineering and Technology,School of Pharmacy,Harbin University of Commerce,Harbin 150076,China)

机构地区：[1]哈尔滨商业大学药学院药物工程技术研究中心,哈尔滨150076

出　　处：《分析试验室》2024年第1期1-8,共8页Chinese Journal of Analysis Laboratory

基　　金：国家自然科学基金(42207266);黑龙江省自然科学基金-联合引导项目(LH2022B011);哈尔滨商业大学2022年研究生创新项目(YJSCX2022-755HSD)资助。

摘　　要：通过热聚合法高温煅烧尿素得到g-C_(3)N_(4)纳米片,再以溶剂热法得到Bi OI/g-C_(3)N_(4)复合材料,采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、红外光谱(FT-IR)等手段对Bi OI/g-C_(3)N_(4)纳米复合材料的微观结构和形貌进行了表征。通过滴涂法将Bi OI/g-C_(3)N_(4)复合材料修饰在玻碳电极(GCE)表面,构建了用于快速检测磺胺甲噁唑(SMX)的电化学传感平台,通过循环伏安(CV)和差分脉冲伏安(DPV)技术对SMX进行电化学分析,峰值电流随SMX浓度呈线性增加,线性范围为5~1000μmol/L,检出限为0.025μmol/L。采用加标回收法测定自来水样品中的SMX,加标回收率为90.0%~103.4%。The g-C_(3)N_(4) nanosheet was obtained by high-temperature calcination of urea with thermal polymerization,and the Bi OI/g-C_(3)N_(4) composites were obtained by a solvothermal method.The microstructure and morphology of the Bi OI/g-C_(3)N_(4) nanocomposites were verified by different techniques including X-ray diffraction(XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and infrared (FT-IR) spectroscopy.The electrochemical sensing platform for the rapid detection of sulfamethoxazole (SMX) was constructed by drop-coating the Bi OI/g-C_(3)N_(4) composites on the surface of a glassy carbon electrode (GCE).SMX was detected by cyclic voltammetry (CV) and differential pulsed voltammetry (DPV),and the peak current increased linearly with SMX concentration in the linear range of 5-1000μmol/L,with a limit of detection of0.025μmol/L.The spiked recoveries of SMX in tap water samples ranged from 90.0%to 103.4%.

关 键 词：g-C_(3)N_(4)纳米片 电化学传感器 磺胺甲噁唑 

分 类 号：O657.1[理学—分析化学] X703[理学—化学]