KMS Chongqing Institute of Green and Intelligent Technology, CAS
Rapid Electrochemical Sensing of Zn(II) Using MesoporousMnO2N-Graphene Composites | |
Meng, Xiangle1; Dong, Xiuxiu1; Liu, Dong1; Niu, Qijian1; Lu, Shun2; You, Tianyan1 | |
2023-11-01 | |
摘要 | Detecting and quantifying the concentration of Zn2+ provide the opportunity to balance the beneficial and harmful impacts on living systems. Herein, we developed a sensitive electrochemical sensor for Zn2+ detection based on manganese dioxide@nitrogen-doped graphene (MnO2@N-graphene), which was synthesized by a onestep hydrothermal process. MnO2 with excellent adsorption capacity and N-graphene with precise tuning of the charge carrier mobility achieve high conductivity. By integrating the merits of MnO2 with N-graphene, the as-developed MnO2@N-graphene-based sensor was investigated by cyclic voltammetry and electrochemical impedance spectroscopy. Under the optimal conditions, the designed sensor displayed excellent performance for the detection of Zn2+ over the range of 2.00 x 10(-7)-1.80 x 10(-4) M, with a detection limit of 2.20 x 10(-8) M. In addition, the proposed sensor platform showed good reproducibility. Furthermore, the feasibility of its applications has also been demonstrated in the practical sample analysis with a recovery of 93.4%-103%, offering a new avenue for detecting other heavy metal ions. |
关键词 | Zinc Sensors Graphene Electrodes Metals Conductivity Nanocomposites Anodic stripping voltammetry (ASV) electrochemical manganese dioxide (MnO2) nitrogen-doped graphene (N-graphene) Zn2+ |
DOI | 10.1109/JSEN.2023.3293547 |
发表期刊 | IEEE SENSORS JOURNAL |
ISSN | 1530-437X |
卷号 | 23期号:21页码:25673-25679 |
通讯作者 | Dong, Xiuxiu(dongxx@ujs.edu.cn) ; You, Tianyan(youty@ujs.edu.cn) |
收录类别 | SCI |
WOS记录号 | WOS:001097378500003 |
语种 | 英语 |