MnO2/graphene supported on Ni foam: an advanced electrode for electrochemical detection of Pb(II)
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 33권 / 3호
ㆍ저자명 : Rui Liu, Chao‑Jun Zhang, Xue Han, Tian‑Heng Wu, Ri‑Jia Liu, Yuan Sun, Shuang Jin
ㆍ저자명 : Rui Liu, Chao‑Jun Zhang, Xue Han, Tian‑Heng Wu, Ri‑Jia Liu, Yuan Sun, Shuang Jin
목차
MnO2graphene supported on Ni foam: an advanced electrode for electrochemical detection of Pb(II)Abstract
1 Introduction
2 Experiment sections
2.1 Fabrication of the MnO2grapheneNi electrodes
2.2 Characterization of the MnO2grapheneNi electrodes
2.3 The electrochemical measurements
3 Results and discussion
3.1 The properties of MnO2grapheneNi electrodes
3.2 Electrochemical analysis
3.3 Real sample analysis
4 Conclusions
Anchor 13
Acknowledgements
References
영어 초록
Graphene-derived materials are an excellent electrode for electrochemical detection of heavy metals. In this study, a MnO2/ graphene supported on Ni foam electrode was prepared via ultrasonic impregnation and electrochemical deposition. The resulting electrode was used to detect Pb(II) in the aquatic environment. The graphene and MnO2 deposited on the Ni foam not only improved active surface area, but also promoted the electron transfer. The electrochemical performance towards Pb(II) was evaluated by cyclic voltammetry (CV) and square wave anodic stripping voltammetry (SWASV). The prepared electrode exhibited lower limit of detection (LOD, 0.2 μM (S/N = 3)) and good sensitivity (59.9 μAμM−1) for Pb(II) detection. Moreover, the prepared electrodes showed good stability and reproducibility. This excellent performance can be attributed to the strong adhesion force between graphene and MnO2, which provides compact structures for the enhancement of the mechanical stability. Thus, these combined results provide some technical considerations and scientific insights for the detection of heavy metal ions using composite electrodes.참고 자료
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