Sonication and Green Synthesis of Polyurethane/TiO2 Hybrid Composite Film and Evaluation of Its Sensing Properties for Pb2+

作者：Wang, Shan^*; Liu, Ruiqing; Li, Chenchen

来源：Nanoscience and Nanotechnology Letters, 2018, 10(7): 977-981.

DOI：10.1166/nnl.2018.2730

• Polyurethane
• Nano-TiO2
• Composite Film
• Sensing
• Pb2+

Polyurethane (PU) has been rarely used as polymer matrix for preparation of TiO2/polymer hybrids. In this study, PU/nano-TiO2 composite film was prepared by an ultrasonic process through electrostatic interaction. Scanning electron microscopy investigation showed that the PU/nano-TiO2 composite film had a continuous, uniform, and smooth surface. TiO2 nanoparticles were well-dispersed and embedded in the PU matrix. The fluorescence analysis results showed that the film was more sensitive and selective to Pb2+ than to other commonly used metal ions. Similar results were obtained from fluorescence enhancement experiments performed in water. Furthermore, the film exhibited a fast and reversible response to Pb2+ and thus could be used as a sensing film for this ion.

• 出版日期2018-7
• 单位咸阳师范学院