Fe^(3+) ion quantification with reusable bioinspired nanopores  

作　　者：Yanqiong Wang Yaqi Hou Fengwei Huo Xu Hou 

机构地区：[1]Institute of Flexible Electronics(IFE,Future Technologies),Xiang'an Campus,Xiamen University,Xiamen 361102,China [2]State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China [3]Institute of Artificial Intelligence,Xiamen University,Xiamen 361005,China [4]Department of Physics,Research Institute for Biomimetics and Soft Matter,Fujian Provincial Key Laboratory for Soft Materials Research,Jiujiang Research Institute,College of Physical Science and Technology,Xiamen University,Xiamen 361005,China [5]Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM),Xiamen 361102,China [6]Engineering Research Center of Electrochemical Technologies of Ministry of Education,Xiamen University,Xiamen 361005,China

出　　处：《Chinese Chemical Letters》2025年第2期179-184,共6页中国化学快报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.52303380,52025132,52273305,22205185,21621091,22021001,and 22121001);Fundamental Research Funds for the Central Universities(No.20720240041);the 111 Project(Nos.B17027 and B16029);the National Science Foundation of Fujian Province of China(No.2022J02059);the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(No.RD2022070601);the New Cornerstone Science Foundation through the XPLORER PRIZE。

摘　　要：Excessive Fe^(3+) ion concentrations in wastewater pose a long-standing threat to human health.Achieving low-cost,high-efficiency quantification of Fe^(3+) ion concentration in unknown solutions can guide environmental management decisions and optimize water treatment processes.In this study,by leveraging the rapid,real-time detection capabilities of nanopores and the specific chemical binding affinity of tannic acid to Fe^(3+),a linear relationship between the ion current and Fe^(3+) ion concentration was established.Utilizing this linear relationship,quantification of Fe^(3+) ion concentration in unknown solutions was achieved.Furthermore,ethylenediaminetetraacetic acid disodium salt was employed to displace Fe^(3+) from the nanopores,allowing them to be restored to their initial conditions and reused for Fe^(3+) ion quantification.The reusable bioinspired nanopores remain functional over 330 days of storage.This recycling capability and the long-term stability of the nanopores contribute to a significant reduction in costs.This study provides a strategy for the quantification of unknown Fe^(3+) concentration using nanopores,with potential applications in environmental assessment,health monitoring,and so forth.

关 键 词：Bioinspired nanopores Fe^(3+)ion quantification Chemical binding affinity Tannic acid REUSABILITY 

分 类 号：X832[环境科学与工程—环境工程] TB383.1[一般工业技术—材料科学与工程]