A honeycomb-like micro-needle sensor with gold nanoparticles embedded for the determination of hexavalent chromium in seawater

doi:10.1016/j.microc.2023.109857

	A honeycomb-like micro-needle sensor with gold nanoparticles embedded for the determination of hexavalent chromium in seawater
	Li, Ying 1,2; Han, Haitao 2; Fei, Yinghong 3,4; Pan, Dawei 2,5; Wang, Haizeng 1
刊名	MICROCHEMICAL JOURNAL
	2024-02-01
卷号	197 页码:6
关键词	Hexavalent chromium Micro -needle electrode Honeycomb -like structure Gold nanoparticles Seawater
ISSN号	0026-265X
DOI	10.1016/j.microc.2023.109857
通讯作者	Han, Haitao(hthan@yic.ac.cn) ; Wang, Haizeng(haizwang@ouc.edu.cn)
英文摘要	As one of the most toxic heavy metals, hexavalent chromium (Cr(VI)) is a typical environmental pollutant that directly affects human health. In this work, a novel micro-needle sensor with honeycomb-like structure and embedded gold nanoparticles was proposed for the stable and sensitive determination of Cr(VI). The honeycomblike structure provided larger specific surface area to support more gold nanoparticles which exhibited excellent catalytic activity towards the electrochemical reduction of Cr(VI) to Cr(III). In addition, gold nanoparticles were embedded into the holes of the honeycomb-like structure, which can effectively prevent them from falling off from the electrode surface due to the protection of the holes. Combining the honeycomb-like structure of microneedle electrode with the excellent catalytic activity of gold nanoparticles, the fabricated sensor exhibited outstanding stability and sensitivity for the cathodic stripping determination of Cr(VI). A linear range of Cr(VI) from 0.5 to 300 mu mol/L was obtained, with the detection limit of 0.15 mu mol/L. The recovery of the sensor for the determination of hexavalent chromium in seawater samples was also investigated. Moreover, the sensor might be further adapted for the determination of other heavy metals with different nanoparticles embedded.
WOS关键词	ELECTROCHEMICAL DETECTION ; WATER ; ELECTRODE ; VI ; SPECIATION
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:001152427500001
资助机构	Fundamental Research Funds for the Central Public-interest Scientific Institution
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34845]
专题	中国科学院烟台海岸带研究所
通讯作者	Han, Haitao; Wang, Haizeng
作者单位	1.Ocean Univ China, Coll Chem & Chem Engn, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pro, Key Lab Coastal Environm Proc & Ecol Remediat,Shan, Yantai 264003, Peoples R China 3.Yantai Univ, Sch Civil Engn, Yantai 264005, Peoples R China 4.Shandong Saline Alkali Land Modern Agr Co, Dongying 257347, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Ying,Han, Haitao,Fei, Yinghong,et al. A honeycomb-like micro-needle sensor with gold nanoparticles embedded for the determination of hexavalent chromium in seawater[J]. MICROCHEMICAL JOURNAL,2024,197:6.
APA	Li, Ying,Han, Haitao,Fei, Yinghong,Pan, Dawei,&Wang, Haizeng.(2024).A honeycomb-like micro-needle sensor with gold nanoparticles embedded for the determination of hexavalent chromium in seawater.MICROCHEMICAL JOURNAL,197,6.
MLA	Li, Ying,et al."A honeycomb-like micro-needle sensor with gold nanoparticles embedded for the determination of hexavalent chromium in seawater".MICROCHEMICAL JOURNAL 197(2024):6.