Boosting the Quantitative Inorganic Surface-Enhanced Raman Scattering Sensing to the Limit: The Case of Nitrite/Nitrate Detection
Boosting the Quantitative Inorganic Surface-Enhanced Raman Scattering Sensing to the Limit: The Case of Nitrite/Nitrate Detection
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DOI：
10.1021/acs.jpclett.5b00115
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发表时间：
2015-03-05
影响因子：
5.7
通讯作者：
Alvarez-Puebla, Ramon A.
中科院分区：
文献类型：
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作者：
Correa-Duarte, Miguel A.;Pazos Perez, Nicolas;Alvarez-Puebla, Ramon A.
一个高性能的离子传感平台已经开发了一个跨学科的方法，结合经典的比色格里斯反应和纳米技术的新概念，如纳米粒子的等离子体耦合和表面增强拉曼散射（Sers）光谱。该方法利用了Sers/表面增强共振拉曼散射（SERRS）相结合的优点，通过诱导形成均匀的热点和与激光线共振的有色复合物，使亚硝酸盐的检测限低至亚皮摩尔水平。这种新方法的性能进行了比较，与经典的格里斯反应和离子色谱显示检测限约6和3个数量级，分别降低。
A high-performance ionic-sensing platform has been developed by an interdisciplinary approach, combining the classical colorimetric Griess reaction and new concepts of nanotechnology, such as plasmonic coupling of nanoparticles and surface-enhanced Raman scattering (SERS) spectroscopy. This approach exploits the advantages of combined SERS/surface-enhanced resonant Raman Scattering (SERRS) by inducing the formation of homogeneous hot spots and a colored complex in resonance with the laser line, to yield detection limits for nitrite down to the subpicomolar level. The performance of this new method was compared with the classical Griess reaction and ionic chromatography showing detection limits about 6 and 3 orders of magnitude lower, respectively.