Journal
MICROCHEMICAL JOURNAL
Volume 155, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.microc.2020.104776
Keywords
Porphyrin; COFs; Hydroquinone; Acetaminophen; Simultaneous determination
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Funding
- National Natural Science Foundation of China [21665024]
- Lanzhou Health Science and Technology Development Project [2019-037]
- Key Lab of Polymer Materials of Gansu Province
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In this present study, a new porphyrin based covalent organic framework material (PNeCOFs) is synthesized by the imidization reaction of tetraminophenyl porphyrin (TAPP) and 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTCDA), and then the obtained COFs were combined graphene oxide (GO) to prepare PNeCOFs/GO modified electrode for the simultaneous determination of hydroquinone (HQ) and acetaminophen (AC). The composite material displays a well synergistic effect of high electrocataytic activity of the COFs and good conductivity of GO. Catalytic process and electrochemical oxidation mechanism are discussed. Under the optimum conditions, the detection limits are 1.1 x 10(-8) mol L-1 and 9.0 x 10(-9) mol L-1 for AC and HQ, respectively. The linear ranges are 2.0 x 10(-7) mol L-1 to 1.5 x 10(-4) mol L-1 for AC and 1.0 x 10(-7) mol L-1 to 1.0 x 10(-4) mol L-(1) for HQ. This work is beneficial to the electrochemical application of COFs.
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