引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1126次   下载 1348 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Biomimetic Method Synthesis of HgS/Polyurethane Composite Film and Its Sensing Properties to Ba2+
Shan Wang*,Min-yan Zheng
Author NameAffiliation
Shan Wang* School of Chemistry and Chemical Engineering of Xianyang Normal University, Xianyang 712000, China 
Min-yan Zheng School of Chemistry and Chemical Engineering of Xianyang Normal University, Xianyang 712000, China 
Abstract:
Polyurethane-conjugated HgS nanocrystals with tunable sizes prepared by using biomimetic method. The obtained HgS nanoparticles with good dispersibility were characterized by Fourier transform infrared. Scanning electron microscopy are used to envisage the binding of nanoparticles with functional groups. The polyurethane molecules can control nucleation and growth of HgS crystals by binding on the surface of nanocrystals to stabilize nanoparticles. Quantum confinement effect of polyurethane-conjugated HgS nanocrystals was confirmed by UV-Vis spectra. The nanoparticles exhibit a well-defined emission feature at about 291 nm. The fluorescence results reveal that the PU/HgS nanoparticles film is sensitive to Ba2+, and a small amount of Ba2+ makes the emissions increase rapidly. The emission is hardly affected by other common ions in water. The nanocomposite film is possible to become a special sensor material for Ba2+.
Key words:  Polyurethane, HgS nanoparticals, Fluorescence sensor
FundProject:
生物矿化法制备HgS/聚氨酯复合薄膜及其对Ba2+的传感性能
王珊*,郑敏燕
摘要:
通过生物矿化法制备出HgS/聚氨酯纳米复合材料并用FTIR、SEM等对材料进行了表征. 研究发现聚氨酯分子可以控制HgS的成核和晶体生长. 聚氨酯的量子限域效应已通过紫外-可见光谱证实,在约291 nm处有明显的特征吸收峰. 荧光性能研究结果表明HgS/聚氨酯纳米粒子复合薄膜对Ba2+的存在十分敏感,少量的Ba2+会使荧光强度明显上升,水中常见离子几乎对此没有影响.
关键词:  聚氨酯, 纳米HgS, 荧光传感器
DOI:10.1063/1674-0068/28/cjcp1501002
分类号: