荧光
材料科学
检出限
分析化学(期刊)
猝灭(荧光)
碳纤维
吸收(声学)
核化学
化学
色谱法
光学
复合数
物理
复合材料
作者
Wenjing Chen,Hong Lin,Yi Wu,Meng Yang,Xianjing Zhang,Shixin Zhu,Maoting He,Jianxin Xie,Zhengjun Shi
标识
DOI:10.1007/s42114-022-00443-0
摘要
Nitrogen-doped carbon dots (N-CDs) were prepared from Auricularia auricula (L.ex Hook.) Underw via a one-step hydrothermal method. The N-CDs were spherical with an average particle size of 2.85 nm. The optimal excitation and emission wavelengths were 324 nm and 400 nm, respectively. There was considerable overlap between the excitation or emission spectrum of N-CDs and the UV absorption band of MnO4−. The inner filter effect (IFE) was formed between N-CDs and MnO4−, which led to the fluorescence quenching of N-CDs. The fluorescence quenching intensity of the system showed a good linear relationship with the concentration of MnO4− from 0.15 to 9.00 μM, and the limit of detection (LOD) of MnO4− was 0.12 μM. The proposed method was then used to measure MnO4− in polluted water with recoveries of 99.42 to 101.16%. The synthesized N-CDs offering trace MnO4− detection in simulation sample are extremely profound for environmental evaluation.Graphical abstractN-CD fluorescent probes were facile prepared from biomass Auricularia auricula Underw for the sensing of MnO4− based on IFE.
科研通智能强力驱动
Strongly Powered by AbleSci AI