Lanthanum loaded graphitic carbon nitride nanosheets for highly sensitive and selective fluorescent detection of iron ions

作者：Zhang, Hanqiang^*; Huang, Yihong^*; Lin, Xiahui; Lu, Fenfen; Zhang, Zhusen; Hu, Zhibiao

来源：Sensors and Actuators B: Chemical , 2018, 255: 2218-2222.

DOI：10.1016/j.snb.2017.09.026

• Lanthanum
• Graphitic carbon nitride nanosheets
• Fluorescence
• Detection
• Fe3+

A facile synthesis of lanthanum (La) loaded graphitic carbon nitride nanosheets (CNNS) was developed in this study. The obtained La-CNNS exhibited an intense emission peak at 255 nm, owing to fluorescence enhancement effect of introduced La on the surface of CNNS. La-CNNS showed excitation-independent behavior and blue shift compared with CNNS. It displayed great fluorescence quenching via photoinduced electron transfer (PET) when a small amount of Fe3+ was added. The probe exhibited a wide linear response concentration range (0.1-20 mu M) to Fe3+ with a detection limit of 0.0232 mu M. The La-CNNS fluorescence probe was highly selective and suitable for Fe3+ analysis in natural water samples.

• 出版日期2018-2
• 单位龙岩学院