N,N-Dimethyl Formamide Regulating Fluorescence of MXene Quantum Dots for the Sensitive Determination of Fe3

• Published in: Nanoscale research letters Vol. 16; no. 1; p. 160
• Main Authors: Gao, Xiaohui, Shao, Xiaochun, Qin, Longlong, Li, Yejun, Huang, Shengxiang, Deng, Lianwen
• Format: Journal Article
• Language: English
• Published: New York Springer US 28.10.2021; Springer Nature B.V; SpringerOpen
• Subjects: Chemistry and Materials Science; Detection of Fe3; Dimethylformamide; Electrostatic properties; Energy spectra; Fluorescence; Fluorescent indicators; Fourier transforms; Infrared spectra; Infrared spectroscopy; Iron; Materials Science; Molecular Medicine; MXene quantum dots; MXenes; Nano Express; Nanochemistry; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Photoelectrons; Probes; Quantum dots; Spectrum analysis; Detection of Fe; Fluorescence; MXene quantum dots
• ISSN: 1556-276X; 1931-7573; 1556-276X
• DOI: 10.1186/s11671-021-03617-9

Due to the wide use of iron in all kinds of areas, the design and construction of direct, fast, and highly sensitive sensor for Fe 3+ are highly desirable and important. In the present work, a kind of fluorescent MXene quantum dots (MQDs) was synthesized via an intermittent ultrasound process using N,N -dimethyl formamide as solvent. The prepared MQDs were characterized via a combination of UV–Vis absorption, fluorescence spectra, X-ray photoelectron energy spectra, and Fourier-transform infrared spectroscopy. Based on the electrostatic-induced aggregation quenching mechanism, the fluorescent MQDs probes exhibited excellent sensing performance for the detection of Fe 3+ , with a sensitivity of 0.6377 mM −1 and the detection limit of 1.4 μM, superior to those reported in studies. The present MQDs-based probes demonstrate the potential promising applications as the sensing device of Fe 3+ .