Fluorescent probes based on cellulose for sensitive detection of Fe3+and its applications
INDUSTRIAL CROPS AND PRODUCTS(2024)
摘要
Iron is closely related to human life and is widely used in industrial production. It is also the highest essential trace element in the human body. A high concentration of Fe3+ is a common water pollutant that can enter the human body through the water cycle and food chain. In this paper, a novel fluorescent probe AC-NA-OH with sensitive response to Fe3+ was designed and synthesized by modifying microcrystalline cellulose (MCC). Probe AC-NA-OH can quickly and sensitively identify Fe3+ (LOD = 0.11 mu M). The reaction mechanism of AC-NA-OH was verified through X-ray photoelectron spectroscopy and density functional theory (DFT) calculations. There was a good linear relationship between the fluorescence intensity of AC-NA-OH and the concentration of Fe3+, while the fluorescence changes from yellow to colorless. In addition, the probe AC-NA-OH has been successfully applied to the detection of Fe3+ in actual water samples, and the cellulose fluorescent films loaded with probe AC-NA-OH can serve as a convenient tool for detecting Fe3+.
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关键词
Cellulose,Fluorescent probe,Cellulose fluorescent films
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