Department of Chemistry , Zhejiang University , Hangzhou 310058 , China.
ACS Sens. 2018 Aug 24;3(8):1439-1444. doi: 10.1021/acssensors.8b00113. Epub 2018 Aug 7.
This work established a rapid and sensitive explosive detection and recognition technique. We report a two-dimensional electrochemiluminescence (2-D ECL) method based on porous silicon (pSi) by monitoring the dynamic change in peak position and peak intensity of pSi-ECL. Gold nanoparticles (AuNPs) were deposited on the pSi surface to promote the electrochemical reaction and electron transfer efficiency at the pSi-electrolyte interface. The 2-D ECL can effectively detect and discriminate different classes of explosives including nitro compounds, peroxides with nitrogen atoms, and peroxides without nitrogen atoms due to their different oxidation and electron transfer ability.
本工作建立了一种快速灵敏的爆炸物检测识别技术。我们报道了一种基于多孔硅（pSi）的二维电化学发光（2-D ECL）方法，通过监测 pSi-ECL 峰位置和峰强度的动态变化来实现。金纳米粒子（AuNPs）沉积在 pSi 表面以促进电化学反应和 pSi-电解质界面的电子转移效率。由于不同类别的爆炸物具有不同的氧化和电子转移能力，因此 2-D ECL 可以有效地检测和区分包括硝基化合物、含氮原子的过氧化物和不含氮原子的过氧化物等不同类型的爆炸物。
