Tip-porous microneedle: A highly stable sensing platform for direct determination of labile metals in natural seawater
文献类型：期刊论文
| 作者 | Han, Haitao4 ; Wang, Jie3; Pan, Dawei2,4; Li, Ying1; Wang, Chenchen4
|
| 刊名 | ENVIRONMENTAL POLLUTION
 |
| 出版日期 | 2023 |
| 卷号 | 316页码:6 |
| ISSN号 | 0269-7491 |
| 关键词 | Microneedle sensor Electrochemical etching Porous structure Labile metals Copper Natural seawater |
| DOI | 10.1016/j.envpol.2022.120687 |
| 通讯作者 | Pan, Dawei(dwpan@yic.ac.cn) |
| 英文摘要 | Nanomaterial-functionalized voltammetric microsensors are promising tools for detecting trace metals at low concentrations in the complex environment of natural seawater. However, the sensitivity reduction caused by the loss of modified nanomaterials in the detection process has always been a major problem. Herein, to fabricate a highly stable sensing platform, a microneedle electrode with a hierarchical porous tip was prepared through electrochemical etching technology to firmly embed nanoparticles. Using copper (Cu) as a model trace metal, a micro-cluster needle sensor based on a gold nanoparticle (AuNP)-embedded tip-porous microneedle electrode (PMNE) was fabricated for the direct voltammetric determination of labile Cu in natural seawater. The porous structure of P-MNE not only provided a larger specific surface area and active sites for AuNPs which had excellent electrocatalytic performance for Cu2+ determination, but also protected from their loss during the detection process in seawater. Therefore, this novel micro-cluster needle sensor exhibited significantly improved stability with a relative standard deviation (RSD) of 1.5% for 30 detections. The linear range of Cu2+ on this micro-cluster needle sensor was from 0.1 to 1000 nM with a detection limit of 0.03 nM. More importantly, this micro-cluster needle sensor was successfully used for directly detecting labile Cu in natural seawater samples without any preaccumulation treatment or reagent addition to obtain the contribution proportions of the labile fraction in total dissolved Cu. Furthermore, this sensing platform might also be extended to the reliable determination of other labile metals in seawater by changing the functional nanoparticles embedded in the nanopores. |
| WOS关键词 | NANOPOROUS STAINLESS-STEEL ; SIMULTANEOUS ELECTROCHEMICAL DETERMINATION ; GALVANIC REPLACEMENT ; COPPER ; ELECTRODE ; SPECIATION ; GOLD ; NANOPARTICLES ; LEAD ; MICROELECTRODES |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000903924100002 |
| 资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Natural Scientific Foundation of Shandong Province |
| 源URL | [http://ir.yic.ac.cn/handle/133337/32510]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 |
| 通讯作者 | Pan, Dawei |
| 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yantai Univ, Sch Chem & Chem Engn, Yantai 264005, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Res Ctr Coastal Environm Engn Technol Shandong Pro, CAS Key Lab Coastal Environm Proc & Ecol Remediat,, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Han, Haitao,Wang, Jie,Pan, Dawei,et al. Tip-porous microneedle: A highly stable sensing platform for direct determination of labile metals in natural seawater[J]. ENVIRONMENTAL POLLUTION,2023,316:6. |
| APA | Han, Haitao,Wang, Jie,Pan, Dawei,Li, Ying,&Wang, Chenchen.(2023).Tip-porous microneedle: A highly stable sensing platform for direct determination of labile metals in natural seawater.ENVIRONMENTAL POLLUTION,316,6. |
| MLA | Han, Haitao,et al."Tip-porous microneedle: A highly stable sensing platform for direct determination of labile metals in natural seawater".ENVIRONMENTAL POLLUTION 316(2023):6. |
入库方式： OAI收割
来源：烟台海岸带研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。