Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 308, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.122919
Keywords
Electrochemical sensor; Metal organic frameworks; Ti3C2TX MXene; L-tryptophan
Funding
- National Natural Science Foundation of China [52172092]
- Natural Science Foundation of Heilongjiang Province [LH2021B029]
- Key Research and Develop-ment Guidance Projects in Heilongjiang Province [GZ20210034]
- Opening Foundation of Heilongjiang Provincial Key Laboratory of Poly-meric Composition materials [CLKFKT2021B9]
- Fundamental Research Fund of Heilongjiang Provincial University [135509201]
- Undergraduate Training Programs for Innovation and Entrepreneurship [202110232009]
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In this study, a novel electrode material was designed and constructed for a high performance electrochemical sensor with outstanding selectivity, reproducibility, and stability. The sensor exhibited a wide linear range and low limit of detection, and showed satisfactory practical ability in real blood serum samples.
Rational design and constructed new electrode material as high performance electrochemical sensor with outstanding selectivity, reproducibility and stability is an urgent demand for trace detection. Herein, a novel CeMOF/Ti3C2TX MXene composite as electrochemical sensor for L-Tryptophan (L-Trp) was constructed by utilizing the three-dimensional straw-sheaf-like Ce-MOF and Ti3C2TX MXene nanosheets. The combination of Ce-MOF and Ti3C2TX MXene not only significantly improves the conductivity of metal-organic framework (MOF) but also effectively prevents the stacking of Ti3C2TX MXene nanosheets. The electrochemical properties of the proposed sensor were investigated by electrochemical techniques in detail. The L-Trp sensor exhibits a wide linear range (0.2 mu M-139 mu M) and a low limit of detection (0.19 mu M, S/N = 3). Moreover, the proposed sensor exhibits excellent selectivity, good reproducibility and long-term stability, as well as satisfactory practical ability in real blood serum samples.
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