Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China.
Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China.
Int J Biol Macromol. 2023 Jun 1;239:124261. doi: 10.1016/j.ijbiomac.2023.124261. Epub 2023 Mar 30.
As one of the most abundant metal ions, Cu has turned into a great threat to human health and the natural environment due to its widely utilized in various industries. In this paper, a chitosan-based fluorescent probe CTS-NA-HY for detection and adsorption of Cu was rationally prepared. CTS-NA-HY exhibited a specific "turn off" fluorescence response to Cu and the fluorescence color changed from bright yellow to colorless. It possessed satisfactory detection performance to Cu including good selectivity and anti-interference, low detection limit (29 nM) and wide pH range (4-9). The detection mechanism was confirmed by Job's plot, X-ray photoelectron spectroscopy, FT-IR and H NMR analysis. Additionally, the probe CTS-NA-HY was capacity of determining Cu in environmental water and soil samples. Besides, CTS-NA-HY-based hydrogel could also remove Cu in aqueous solution effectively, which the ability of adsorption was greatly improved compared with original chitosan hydrogel.
由于铜在各个行业中的广泛应用，它已成为对人类健康和自然环境的巨大威胁。在本文中，我们合理制备了一种壳聚糖基荧光探针 CTS-NA-HY，用于检测和吸附 Cu。CTS-NA-HY 对 Cu 表现出特异性的“关闭”荧光响应，荧光颜色从亮黄色变为无色。它对 Cu 具有令人满意的检测性能，包括良好的选择性和抗干扰性、低检测限（29 nM）和宽 pH 范围（4-9）。通过 Job 图、X 射线光电子能谱、FT-IR 和 H NMR 分析证实了检测机制。此外，该探针 CTS-NA-HY 还能够测定环境水样和土壤样品中的 Cu。此外，基于 CTS-NA-HY 的水凝胶也可以有效地去除水溶液中的 Cu，与原始壳聚糖水凝胶相比，吸附能力大大提高。
