期刊
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
卷 179, 期 -, 页码 163-170出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2017.02.031
关键词
Carbon dots; Isophorone diisocyanate; beta-Cyclodextrin; Cr(VI) ions; Quenching
类别
资金
- Innovation Program for Graduate Education of Jiangsu Province [KYLX15_1041]
- National Natural Science Foundation of China [U1507115, 31601549]
- Natural Science of Jiangsu Province [BK20161362, 20160500, 20160489]
- Natural Science of Jiangsu Education [16KJB150045, 16KJB150009]
A water-soluble fluorescent carbon dots (FCDs) from cellulose was prepared using one-pot simple hydrothermal method. In this work, a novel fluorescent probe material, fluorescent carbon dots-linked isophorone diisocyanate and beta-cyclodextrin (FCDs-IPDI-CD), was prepared with FCDs, isophorone diisocyanate (IPDI) and beta-cyclodextrin (beta-CD) as raw materials. The structure and morphology of FCDs-IPDI-CD were characterized using the Fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The as-prepared FCDs-IPDI-CD exhibits excellent emission property and high stability. The fluorescence of the FCDs-IPDI-CD could be quenched by Cr(VI) ions, and the results indicate that FCDs-IPDI-CD can be used as an effective fluorescent probe for the detection of Cr(VI) ions with good selectivity and sensitivity in an aqueous solution. The influences of environment factors (such as pH, reaction time) on relative fluorescence intensity were studied. According to the optimum conditions, a new sensitive method detecting Cr(VI) ions was established. The method has been successfully applied to detect Cr(VI) ions in water and soil samples with satisfactory results. (C) 2017 Elsevier B.V. All rights reserved.
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