Joint Laboratory of Advanced Biomedical Materials (NFU-UGent), Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China.
Department of Chemical Engineering, University of New Brunswick, Fredericton, New Brunswick E3B5A3, Canada.
Int J Biol Macromol. 2024 Jan;254(Pt 1):127707. doi: 10.1016/j.ijbiomac.2023.127707. Epub 2023 Nov 1.
The pollution of heavy metals such as Cu is still serious and the discharge of sewage of Cu will cause damage to soil environment and human health. Herein, a biomass-based solid-state fluorescence detection platform (CPU-CDs) was developed as fluorescent sensor for detection Cu via fluorescence and colorimetric dual-model methods in real time. CPU-CDs was composed of xylan-derived CDs (U-CDs) and cotton cellulose paper, which exhibiting good reusability, non-toxicity, excellent fluorescence characteristics and high biocompatibility. Further, CPU-CDs displayed high effectiveness and sensitivity for Cu with the detection limit as low as 0.14 μM, which was well below U.S. EPA safety levels (20 μM). Practical application indicated that CPU-CDs could achieve precision response of Cu change in real environment water samples with good recovery range of 90 %-119 %. This strategy demonstrated a promising biomass solid-state fluorescence sensor for Cu detection for water treatment research, which is of great significance in dealing with water pollution caused by heavy metal ions.
重金属如 Cu 的污染仍然严重，Cu 的污水排放会对土壤环境和人体健康造成损害。在此，我们开发了一种基于生物质的固态荧光检测平台（CPU-CDs），作为荧光传感器，通过荧光和比色双模式方法实时检测 Cu。CPU-CDs 由木聚糖衍生的 CDs（U-CDs）和棉纤维素纸组成，具有良好的可重复使用性、无毒、优异的荧光特性和高生物相容性。此外，CPU-CDs 对 Cu 表现出高的有效性和灵敏度，检测限低至 0.14 μM，远低于美国环保署的安全水平（20 μM）。实际应用表明，CPU-CDs 可以在实际环境水样中实现 Cu 变化的精确响应，具有良好的回收率范围为 90%-119%。该策略为水处理研究中 Cu 的检测展示了一种有前景的生物质固态荧光传感器，对于处理重金属离子引起的水污染具有重要意义。
