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- Title
Detection of heavy metal Pb<sup>2+</sup> by electrochemical sensor based on ZIF-8@GO composite.
- Authors
Xu, Yuandong; Guo, Hui; Wei, Yaqing; Feng, Haoyang; Yang, Yuqing; Lu, Yongjuan; Wei, Yajun; Su, Jishan; Ben, Yingying; Yuan, Jinwei; Liu, Xing; Zhang, Xia
- Abstract
ZIF-8@GO electrochemical sensor is fabricated via wrapping graphene oxide with ZIF-8 for the determination of Pb2+. The N2 adsorption data shows the pore size of ZIF-8@GO with 8.72 nm, which is larger than that of ZIF-8 and GO. The CV curve shows that the logarithm of the peak current value is linearly related to the logarithm of the scan rate, indicating that the reaction of Pb2+ on the electrode surface is controlled by both diffusion and adsorption process. Due to the synergy of ZIF-8 and GO, the modified electrode shows high selectivity toward Pb2+. And it has a low detection limit of 1.076 µM (S/N = 3) and a recovery between 90.6% and 100.3% in the actual sample detection, indicating that the sensor has good potential to detect Pb2+.
- Subjects
ELECTROCHEMICAL sensors; METAL detectors; GRAPHENE oxide; HEAVY metals; DETECTION limit; ELECTRODE reactions; DIFFUSION control
- Publication
Journal of Applied Electrochemistry, 2024, Vol 54, Issue 6, p1397
- ISSN
0021-891X
- Publication type
Article
- DOI
10.1007/s10800-023-02042-3