期刊
ENVIRONMENTAL RESEARCH
卷 202, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.envres.2021.111605
关键词
Electrochemical sensor; Zn; Ni-ZIF-8; XC-72; Nafion; Pb(II); Cu(II)
资金
- National Natural Science Foundation of China [41967021, 51802082]
- Key Project of Science and Technology Program of Henan Province [202102310301, 202102210107, CARS-44-SYZ9]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [21HATIT016]
A novel electrochemical sensor was developed for simultaneous detection of Pb(II) and Cu(II) using a Zn/Ni-ZIF-8/XC-72/Nafion hybrid material. The sensor exhibited outstanding linear response and detection limits, showing promising potential for real sample detection.
In this study, a novel electrochemical sensor for simultaneous detection of Pb(II) and Cu(II) was constructed by using Zn/Ni-ZIF-8/XC-72/Nafion hybrid material as electrode surface modifier. XRD, FT-IR, XPS and SEM were used to study the crystal structure, functional groups, element types and morphologies of the prepared materials. The electrochemical performance of the Zn/Ni-ZIF-8/XC-72/Nafion/GCE sensor were investigated by CV, EIS and DPV. In addition, the effects of various conditions including pH, the type of buffer and the ratio of Zn/Ni-ZIF8 to XC-72 were also explored for the determination of Pb(II) and Cu(II). Under the optimum conditions, the constructed sensor exhibited outstanding linear response of Pb(II) (0.794-39.6 ppm) and Cu(II) (0.397-19.9 ppm) with detection limits of 0.0150 and 0.0096 ppm, respectively. Finally, the fabricated sensor was further used to detect Pb(II) and Cu(II) in real samples, and the satisfactory recovery was obtained.
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