离子印迹磁性碳纳米球基电化学传感器用于铜(II)的选择性检测  

A highly selective and sensitive electrochemical Cu(II)detector based on ion-imprinted magnetic carbon nanospheres

作　　者：李瑞珍 秦蕾 符冬菊 王美玲 宋兴福[4] 白永辉 刘伟峰 刘旭光[1] LI Rui-zhen;QIN Lei;FU Dong-ju;WANG Mei-ling;SONG Xing-fu;BAI Yong-hui;LIU Wei-feng;LIU Xu-guang(College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;College of New Materials and New Energies,Shenzhen Technology University,Shenzhen 518055,China;National Engineering Research Center for Integrated Utilization of Salt Lake Resource,East China University of Science and Technology,Shanghai 200237,China;State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China)

机构地区：[1]太原理工大学材料科学与工程学院,山西太原030024 [2]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024 [3]深圳技术大学新材料与新能源学院,广东深圳518055 [4]华东理工大学国家盐湖资源综合利用工程技术研究中心,上海200237 [5]宁夏大学省部共建煤炭高效利用与绿色化工国家重点实验室,宁夏银川750021

出　　处：《新型炭材料（中英文）》2023年第6期1092-1103,共12页New Carbon Materials

基　　金：山西省重点研发计划(201903D421077);中央引导地方科技发展资金(YDZJSX2022A009);银川市科技计划重点项目(2021-ZD-08);国家自然科学基金(51972221,51603142,51902222);省部共建煤炭高效利用与绿色化工国家重点实验室开放课题(2021-K46);山西省自然科学基金(20210302124046);山西省高等学校科技创新项目(2019L0255,2020L0097).

摘　　要：本文报道一种基于Cu(II)离子印迹聚合物为识别元件的电化学传感器。通过耦合表面离子印迹和电化学沉积的制备方法,制备了由磁性碳纳米球组成的离子印迹聚合物电极。所组装的传感器表现出对Cu(II)检测的特异识别性和高灵敏特性。通过场发射扫描电子显微镜和透射电子显微镜对印迹聚合物的微观形貌进行表征,采用傅里叶变换红外光谱对其官能团和化学结构进行表征。传感器电化学性能表明,与非印迹电极和裸电极相比,印迹电极对Cu(II)具有更强的选择性和更高的灵敏度。传感器对浓度为10^(-6)至10^(-10) mol L^(-1)的Cu(II)表现出良好的线性相应电流,其检测限提升至5.138×10^(-16) mol L^(-1)(S/N=3)。此外,该传感器具有良好的抗干扰性、重现性和稳定性,为金属离子的检测提供了新的策略。An electrochemical sensor for Cu(II)based on ion-imprinted polymers was prepared by combining surface imprinting with electrochemical polymerization deposition.The sensor was modified by ion-imprinted magnetic carbon nanospheres with a spe-cific selectivity and sensitivity for Cu(II).The morphology and structure of the materials were characterized and analyzed.Sensors with the imprinted electrode had a stronger selectivity and higher sensitivity towards Cu(II)compared with their original counter-parts.Within relative concentrations of Cu(II)from 10^(-6) to 10^(-10) mol L^(-1),the detection limit of the sensor was as low as 5.138×10^(-16) mol L^(-1)(S/N=3).The sensor is resistant to interference,and has good reproducibility,and stability,making it excellent for the electrochemical detection of metal ions.

关 键 词：离子印迹聚合物 电化学传感器 铜离子 磁性碳纳米球 选择性和灵敏性 

分 类 号：TQ127.11[化学工程—无机化工]