碳基材料负载CeO_(2)对磺胺甲(口恶)唑的伏安分析  

Determination of sulfamethoxazole by carbon-based material supported CeO_(2)nanoparticles composite modified electrode

作　　者：胡华丽 艾纪星 张艳[1] 王鑫 周欢喜 杜海军[1] HU Hua-li;AI Ji-xing;ZHANG Yan;WANG Xin;ZHOU Huan-xi;DU Hai-jun(School of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China;School of Mechatronics Engineering,Guizhou Minzu University,Guiyang 550025,China)

机构地区：[1]贵州民族大学化学工程学院,贵州贵阳550025 [2]贵州民族大学机械电子工程学院,贵州贵阳550025

出　　处：《现代化工》2022年第11期111-116,121,共7页Modern Chemical Industry

基　　金：国家自然科学基金(81860701,82060714);贵州省普通高等学校“绿色化学与资源环境创新团队”项目(黔教合人才团队字[2015]62);贵州民族大学自然科学基金资助项目(校科字(2019)1号)。

摘　　要：为了改善CeO_(2)纳米粒子单独使用时较严重的团聚现象,在超声作用下将CeO_(2)与多壁碳纳米管(MWCNTs)形成复合材料,并利用SEM、Raman、XRD等方法对材料进行表征,发现CeO_(2)纳米粒子具有明显的分散效果。将复合材料修饰到玻碳电极上(GCE)构建检测磺胺甲唑(Sulfamethoxazole,SMX)的电化学传感器。对检测条件如pH、支持电解质、修饰材料使用量等进行优化。在优化条件下通过LSV法对SMX进行电化学分析,结果表明,该电极具有良好的选择性、稳定性,实际样品检测中回收率为88.3%~107.8%。In order to reduce the serious agglomeration of CeO_(2) nanoparticles when they are used alone,CeO_(2) and multi-walled carbon nanotubes(MWCNTs)form a composite material under the action of ultrasound.The composite is characterized by scanning electron microscope(SEM),Raman,X-ray diffraction(XRD)and other methods.It is found that CeO_(2) nanoparticles have a significant dispersion effect.The composite is modified onto the surface of glassy carbon electrode(GCE)to construct an electrochemical sensor for detecting sulfamethoxazole(SMX).Subsequently,optimization experiments are performed on detection conditions such as pH,supporting electrolyte,and the amount of modified materials used.Electrochemical analysis on SMX is performed by LSV method under the optimized conditions.Experimental results show that the electrode has good selectivity,stability and repeatability,by which the recovery rate in actual sample detection is 88.3%-107.8%.

关 键 词：多壁碳纳米管 CeO_(2) 电化学传感器 电化学分析 磺胺甲(口恶)唑 

分 类 号：O657.1[理学—分析化学]