Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 320, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2020.128294
Keywords
Electrochemical sensor; Zeolitic imidazolate framework-8; Conductive carbon nanofiber; Dihydroxybenzene isomers
Funding
- National Natural Science Foundation of China [81271930, 31000425]
- Fundamental Research Funds for the Central Universities [2018CDXYSW0023]
- Research Project of Chongqing Science and Technology Commission of China (CSTC) [2010BB5226]
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Zeolitic imidazolate framework-8 (ZIF-8) was prepared by an easy static method and combined with conductive carbon nanofiber (CNF) to fabricate a novel electrochemical sensor for simultaneous detection of co-existing dihydroxybenzene isomers. The characterization of ZIF-8/CNF nanocomposite was performed by scanning electron microscope (SEM) and X-ray diffraction (XRD). Under the optimized conditions, this proposed sensor showed excellent electrocatalytic activity with detection limits of 0.06 mu M, 0.08 mu M and 0.32 mu M (S/N= 3) for hydroquinone (HQ), catechol (CC) and resorcinol (RS) respectively and with a same linear concentration range of 2-400 mu M. In addition, it possessed great reproducibility, stability and selectivity and obtained satisfactory recovery results in real analysis of lake water and Yangtze River water.
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