用银纳米棒修饰胶带原位表面增强拉曼光谱法检测铀酰离子
In Situ Surface-Enhanced Raman Spectroscopy Detection of Uranyl Ions with Silver Nanorod-Decorated Tape.
作者信息
Jiang Jiaolai, Zhao Fengtong, Shi Siwei, Du Yunfeng, Chen Jun, Wang Shaofei, Xu Jingsong, Li Changmao, Liao Junsheng
机构信息
Institute of Materials, China Academy of Engineering Physics, P. O. Box No.9-11, Mianyang, Sichuan 621907, P. R. China.
Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P.R. China.
出版信息
ACS Omega. 2019 Jul 18;4(7):12319-12324. doi: 10.1021/acsomega.9b01574. eCollection 2019 Jul 31.
Surface-enhanced Raman spectroscopy (SERS) has been utilized for rapid analysis of uranyl ions (UO ) on account of its fast response and high sensitivity. However, the difficulty of fabricating a suitable SERS substrate for in situ analysis of uranyl ions severely restricts its practical application. Hence, we proposed flexible and adhesive SERS tape decorated with silver nanorod (AgNR) arrays for in situ detection of UO . The SERS tape was fabricated through a simple "paste & peel off" procedure by transferring the slanted AgNR arrays from silicon to the transparent tape surface. UO can be easily in situ detected by placing the AgNR SERS tape into an aqueous solution or pasting it onto the solid matrix surface due to the excellent transparent feature of the tape. The proposed SERS tape with well-distributed AgNRs effectively improved the reproducibility and sensitivity for UO analysis. UO with concentration as low as 100 nM was easily detected. Besides, UO adsorbed on an iron disc and rock surface also can be rapidly in situ detected. With its simplicity and convenience, the AgNR SERS tape-based SERS technique offers a promising approach for environmental monitoring and nuclear accident emergency detection.
表面增强拉曼光谱（SERS）因其快速响应和高灵敏度已被用于铀酰离子（UO ）的快速分析。然而，制备适用于铀酰离子原位分析的SERS基底的困难严重限制了其实际应用。因此，我们提出了用银纳米棒（AgNR）阵列修饰的柔性粘性SERS胶带用于UO 的原位检测。通过一个简单的“粘贴与剥离”程序，将倾斜的AgNR阵列从硅转移到透明胶带表面，制备出SERS胶带。由于胶带具有出色的透明特性，将AgNR SERS胶带放入水溶液中或粘贴到固体基质表面，即可轻松原位检测UO 。所提出的具有分布均匀的AgNRs的SERS胶带有效提高了UO 分析的重现性和灵敏度。浓度低至100 nM的UO 很容易被检测到。此外，吸附在铁盘和岩石表面的UO 也能被快速原位检测。基于AgNR SERS胶带的SERS技术因其简单方便，为环境监测和核事故应急检测提供了一种很有前景的方法。
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