A highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater

doi:10.1016/j.aca.2024.342685

	A highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater
	Meng, Weichen 1,2; Han, Xiaochun 1; Han, Rui 1; Zhang, Xinchao 1; Zeng, Xianghua 1; Duan, Jizhou2 ; Luo, Xiliang 1
	2024-06-22
发表期刊	ANALYTICA CHIMICA ACTA
ISSN	0003-2670
卷号	1309 页码:8
通讯作者	Zeng, Xianghua([email protected]) ; Duan, Jizhou([email protected]) ; Luo, Xiliang([email protected])
摘要	The monitoring of heavy metal ions in ocean is crucial for environment protection and assessment of seawater quality. However, the detection of heavy metal ions in seawater with electrochemical sensors, especially for longterm monitoring, always faces challenges due to marine biofouling caused by the nonspecific adsorption of microbial and biomolecules. Herein, an electrochemical aptasensor, integrating both antifouling and antibacterial properties, was developed for the detection of Hg 2 + in the ocean. In this electrochemical aptasensor, ecofriendly peptides with superior hydrophilicity served as anti-biofouling materials, preventing nonspecific adsorption on the sensing interface, while silver nanoparticles were employed to eliminate bacteria. Subsequently, a ferrocene-modified aptamer was employed for the specific recognition of Hg 2 + , leveraging the aptamer's ability to fold into a thymine-Hg 2 + -thymine (T-Hg 2 + -T) structure upon interaction, and bringing ferrocene nearer to the sensor surface, significantly amplifying the electrochemical response. The prepared electrochemical aptasensor significantly reduced the nonspecific adsorption in seawater while maintaining sensitive electrochemical response. Furthermore, the biosensor exhibited a linear response range of 0.01-100 nM with a detection limit of 2.30 pM, and realized the accurate monitoring of mercury ions in real marine environment. The research results offer new insights into the preparation of marine antifouling sensing devices, and it is expected that sensors with antifouling and antimicrobial capabilities will find broad applications in the monitoring of marine pollutants.
关键词	Electrochemical aptasensor Antifouling Mercury ion Antibacterial Antifouling peptide
DOI	10.1016/j.aca.2024.342685
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[22374085]; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-DQC025]; Key Research and Development Pro- gram of Shandong Province[2021ZDSYS30]
WOS研究方向	Chemistry
WOS类目	Chemistry, Analytical
WOS记录号	WOS:001239298600001
出版者	ELSEVIER
WOS关键词	OXIDE
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/185994
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Zeng, Xianghua; Duan, Jizhou; Luo, Xiliang
作者单位	1.Qingdao Univ Sci & Technol, Shandong Key Lab Biochem Anal, Key Lab Opt Elect Sensing & Analyt Chem Life Sci, Coll Chem & Mol Engn,MOE, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Meng, Weichen,Han, Xiaochun,Han, Rui,et al. A highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater[J]. ANALYTICA CHIMICA ACTA,2024,1309:8.
APA	Meng, Weichen.,Han, Xiaochun.,Han, Rui.,Zhang, Xinchao.,Zeng, Xianghua.,...&Luo, Xiliang.(2024).A highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater.ANALYTICA CHIMICA ACTA,1309,8.
MLA	Meng, Weichen,et al."A highly stable electrochemical sensor with antifouling and antibacterial capabilities for mercury ion detection in seawater".ANALYTICA CHIMICA ACTA 1309(2024):8.