期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 241, 期 -, 页码 292-297出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.10.086
关键词
Copper nanoclusters; Glutathione; High quantum yield; Fe3+ sensing; Green synthesis
资金
- National Natural Science Foundation of China [21475118, 21275130, 21675143, 21405142]
Herein, we reported a simple one-pot green method for preparation of fluorescent copper nanoclusters (Cu NCs) with a high quantum yield up to 8.6%, using glutathione as the stabilizing agent. The as-prepared Cu NCs had good water solubility, excellent stability and ultrafine size through the characterization of UV-vis absorption spectroscopy, fluorescence spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. Experimental results showed that the fluorescence of Cu NCs was linearly quenched by the Fe3+ concentrations in the range of 1-100 mu M, with the detection limit of 0.3 mu M. The as-formed Cu NCs were explored for the assay of Fe3+ in real water samples. (C) 2016 Elsevier B.V. All rights reserved.
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