Li Ke, Zhang Min, Ye Xingyu, Zhang Yongming, Li Guisheng, Fu Rui, Chen Xiaofeng
School of Environmental and Geographical Sciences, Shanghai Normal University Shanghai 200234 China
Education Ministry Key and International Joint Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University Shanghai 200234 China.
RSC Adv. 2021 Aug 31;11(46):29073-29079. doi: 10.1039/d1ra04817a. eCollection 2021 Aug 23.
The overuse and inappropriate discharge of naproxen, a common anti-inflammatory medication and an emerging contaminant in water, is detrimental to human health and bodies of water. Here, we design a fluorescent sensor based on molecularly imprinted carbon dots (CDs) for highly selective detection of trace amounts of naproxen. The CDs were encapsulated into the pores of silica through a sol-gel based method and provide fluorescent signal. After removal of the template molecules, a molecularly imprinted polymer layer was formed and the fluorescence of the CDs sensor was selectively quenched by naproxen. A detection limit of as low as 0.03 μM and a linear range of 0.05-4 μM for detecting naproxen in aqueous solution were obtained. High recoveries of naproxen levels in waste water and urine samples for practical application were also achieved. In addition, the accurate detection performance of sensor was maintained during the UV degradation of naproxen.
萘普生是一种常见的抗炎药物，也是水中新出现的污染物，其过度使用和不当排放对人体健康和水体均有害。在此，我们设计了一种基于分子印迹碳点（CDs）的荧光传感器，用于高选择性检测痕量萘普生。通过溶胶-凝胶法将碳点封装在二氧化硅孔中并提供荧光信号。去除模板分子后，形成分子印迹聚合物层，萘普生可选择性淬灭碳点传感器的荧光。在水溶液中检测萘普生时，获得了低至0.03 μM的检测限和0.05 - 4 μM的线性范围。在实际应用中，废水和尿液样本中萘普生水平的回收率也很高。此外，在萘普生的紫外光降解过程中，传感器保持了准确的检测性能。
