Solvothermal preparation of CeO2 nanoparticles–graphene nanocomposites as an electrochemical sensor for sensitive detecting pentachlorophenol
(주)코리아스칼라
- 최초 등록일
- 2023.05.08
- 최종 저작일
- 2022.08
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서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon letters / 32권 / 5호
ㆍ저자명 : Man Yang, Yiyang Chen, Haitao Wang, Yilun Zou, Pingxiu Wu, Jing Zou, Jizhou Jiang
목차
Abstract
1 Introduction
2 Experimental section
2.1 Preparation of graphene oxide
2.2 Synthesis of CeO2 nanoparticles–graphene nanocomposites (CeO2–GR)
2.3 Physical characterization
2.4 Fabrication of GR, CeO2, and CeO2–GR-modified glassy carbon electrode
2.5 Electrochemical measurements
3 Results and discussion
4 Conclusions
Acknowledgements
References
영어 초록
Pentachlorophenol (PCP), as one of the common pesticide and preservatives, is easily accumulated in living organisms. Considering the high toxicity of PCP, the development of an effective and sensitive inspection method to determine the residual trace amounts of PCP continues to be a significant challenge. Herein, a convenient and sensitive electrochemical sensor is constructed by modifying glassy carbon electrode with cerium dioxide ( CeO2) nanoparticles anchored graphene ( CeO2-GR) to detect trace PCP. Benefiting from the two-dimensional lamellar structural advantages, the extraordinary electron-transfer properties, as well as the intensive coupling effect between CeO2 nanoparticles and graphene, the afforded CeO2- GR electrode nanomaterial possesses excellent electrocatalytic activity for the oxidation of PCP. Under the optimum synthetic conditions, the PCP oxidation peak currents of developed CeO2– GR sample exhibit a wide linear range of 5–150 μM. Moreover, the corresponding detection limit of PCP on the CeO2– GR electrode is as low as 0.5 μM. Apart from providing a promising electrochemical sensor, this work, most importantly, promotes an efficient route for the construction of highly active sensing electrode materials.
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