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Open AccessArticle

An Electrochemical Sensor of Poly(EDOT-pyridine-EDOT)/Graphitic Carbon Nitride Composite for Simultaneous Detection of Cd2+ and Pb2+

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Key Laboratory of Petroleum and Gas Fine Chemicals, Educational Ministry of China, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China
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Key Laboratory of Functional Polymers, Xinjiang University, Urumqi 830046, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(5), 702; https://doi.org/10.3390/ma11050702
Received: 20 March 2018 / Revised: 17 April 2018 / Accepted: 20 April 2018 / Published: 29 April 2018
In this study, poly(2,5-bis(3,4-ethylenedioxythienyl)pyridine)/graphitic carbon nitride composites (poly(BPE)/g-C3N4) were prepared by an in situ chemical polymerization method. Composites were characterized by using Fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible absorption spectra (UV–vis), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Furthermore, electrochemical sensors were applied for the electrochemical determination of Cd2+ and Pb2+ using the differential pulse voltammetry (DPV) method. The results indicated that 10 wt % poly(BPE)/g-C3N4 composite-modified electrode exhibited linear detection ranging from 0.12 to 7.2 μM and 0.08 to 7.2 μM for Cd2+ and Pb2+, with detection limits (S/N = 3) of 0.018 μM and 0.00324 μM. Interference analysis suggested that the 10 wt % poly(BPE)/g-C3N4-modified electrode can be applied for the detection of the Cd2+ and Pb2+ in real samples. View Full-Text
Keywords: poly(BPE)/g-C3N4 composite; DPV; electrochemical sensor; simultaneous detection; heavy metals poly(BPE)/g-C3N4 composite; DPV; electrochemical sensor; simultaneous detection; heavy metals
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MDPI and ACS Style

Ding, S.; Ali, A.; Jamal, R.; Xiang, L.; Zhong, Z.; Abdiryim, T. An Electrochemical Sensor of Poly(EDOT-pyridine-EDOT)/Graphitic Carbon Nitride Composite for Simultaneous Detection of Cd2+ and Pb2+. Materials 2018, 11, 702.

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