期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 312, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2020.113354
关键词
MXenes; Titanium carbide; Biomarker; Cancer; Carcinogenic agent
资金
- Ministry of Science and Technology, Taiwan [MOST 107-2221-E-027-079-MY3]
Two-dimensional (2D) MXene-based electrode materials have recently gained attention in the field of electrochemical sensors. Herein, we report the first titanium carbide (TiC)-based electrochemical sensor for the detection of 4-nitroquinoline N-oxide (4-NO). X-ray diffraction, field emission scanning electron microscopy, elemental mapping, and energy-dispersive X-ray spectroscopy were used to examine the structural and compositional properties of TiC. With the 2D MXene structure, the TiC-modified electrode provides excellent conductivity, an electron transfer boost, large surface area, and nanoscale effects, which improve the electrochemical activity for 4-NO detection. The fabricated electrochemical sensor shows a strong voltammetry performance at -0.32 V with a wide linear range (0.01-114 mu M and 133-650 mu M) and a low limit of detection (2 nM) for 4-NO detection. The real-time analysis of 4-NO content in biological samples was successfully conducted and afforded good recoveries. Our method of design produces an efficient electrode material for 4-NO detection with outstanding electrochemical performance. (C) 2020 Elsevier B.V. All rights reserved.
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