Surface plasmon-catalyzed oxidation of 4-aminodiphenyl disulfide for determination of Ag+ ion in aqueous samples
Surface plasmon-catalyzed oxidation of 4-aminodiphenyl disulfide for determination of Ag+ ion in aqueous samples
复制标题
表面等离子体催化氧化 4-氨基二苯基二硫醚测定水样中的银离子
DOI：
10.1007/s00604-020-04428-y
复制
发表时间：
2020-07-20
影响因子：
5.7
通讯作者：
Xia, Lixin
中科院分区：
文献类型：
--
作者：
Sun, Ye;Zhang, Yao;Xia, Lixin
报道了一种新的表面增强拉曼散射（Sers）传感器。选择金纳米粒子（AuNPs）和4-氨基二苯基二硫化物（APDS）分别作为Sers基底和探针分子。加入Ag+后，Sers谱中出现了3个新的峰（1141，1392和1435 cm（-1）），表明APDS对二巯基偶氮苯（DMAB）发生了转化.随着Ag（+）浓度的增加，APDS转化为DMAB的转化率也增加，在10 ~ 100 μ M范围内呈良好的线性关系（R ~（-2）= 0.9746）。检测限（LOD）为7 μ M。与传统的测定方法相比，Sers方法简便、快速，不需要复杂的前处理。
A new sensor for determination of Ag+ ion (Ag+) by surface-enhanced Raman scattering (SERS) is reported. Gold nanoparticles (AuNPs) and 4-aminodiphenyl disulfide (APDS) were chosen as the SERS substrate and probe molecule, respectively. With the addition of Ag+, three new peaks (1141, 1392, and 1435 cm(-1)) appeared in the SERS spectrum, indicating that the conversion of APDS top,p '-dimercaptoazobenzene (DMAB) was achieved. As the concentration of Ag(+)increased, the conversion of APDS to DMAB also increased and showed a good linear relationship (R-2 = 0.9746) in the range of 10 to 100 mu M of Ag+. The limit of detection (LOD) was 7 mu M. Compared with the traditional determination method, the SERS method is convenient and fast and requires no complicated preprocessing.