Adsorption of 2,6-di-t-butyl-p-hydroxytoluene (BHT) on gold nanoparticles: Assignment and interpretation of surface-enhanced Raman scattering
Adsorption of 2,6-di-t-butyl-p-hydroxytoluene (BHT) on gold nanoparticles: Assignment and interpretation of surface-enhanced Raman scattering
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2,6-二叔丁基对羟基甲苯 (BHT) 在金纳米粒子上的吸附：表面增强拉曼散射的分配和解释
DOI：
10.1016/j.apsusc.2012.08.027
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发表时间：
2012-11
影响因子：
6.7
通讯作者：
Yao, Wei-Rong
中科院分区：
文献类型：
--
作者：
Xie, Yun-Fei;Wang, He-Ya;Qian, He;Yao, Wei-Rong
2，6-二叔丁基对羟基甲苯（BHT）是一种常见的抗氧化剂，在油性食品和食品包装材料中被认为是一种可能迁移到食品供应链中并抑制人体呼吸酶的物质。在这项研究中，BHT在不同溶剂中的解决方案进行了测量表面增强拉曼光谱（Sers）结合SERS活性基板：金胶体纳米粒子。在甲醇溶液中，BHT的Sers检测限可达10μg/mL。以766 cm-1处的拉曼峰作为定量分析指标，相关系数为0.9761。这些结果证明了利用Sers检测低浓度BHT的适用性。通过比较Sers峰的特征和密度泛函理论（DFT）计算的拉曼谱，详细分析了BHT在金纳米颗粒表面的吸附行为，确定了此时对Sers信号的主要贡献是电磁增强机制。电荷转移机制也有助于BHT吸附在金纳米粒子的表面增强Sers信号的PhO（H）（Ph=苯基）聚结的格式。
2,6-Di-t-butyl-p-hydroxytoluene (BHT), a common antioxidant, has been implicated in oil foods and food packaging materials as a substance that could migrate into the food supply chain and cause suppression of human respiratory enzymes. In this study, BHT solutions in different solvents were measured by surface enhanced Raman spectroscopy (SERS) in combination with SERS-active substrates: gold colloidal nanoparticles. The limit of detection of BHT can reach the level of 10μg/mL with SERS in methanol. The Raman peak at 766cm−1was used as the index of quantitative analysis and the correlation coefficient was 0.9761. These results demonstrated the applicability of utilizing SERS to detect low concentrations of BHT. By comparing the features of SERS peaks with the density functional theory (DFT)-calculated Raman spectrum, the adsorption behavior of BHT on the surface of gold nanoparticles was analyzed in detail and it was determined that the dominant contribution to the SERS signal in this case should be the electromagnetic enhancement mechanism. A charge-transfer mechanism also contributed to the SERS signal for BHT adsorbed on gold nanoparticles by the PhO(H) (Ph=phenyl) coalescent format.
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影响因子：
9.9
作者：
S. Sánchez‐Cortés;J. García-Ramos
通讯作者：
S. Sánchez‐Cortés;J. García-Ramos
影响因子：
2.5
作者：
N. Félidj;J. Aubard;G. Lévi
通讯作者：
N. Félidj;J. Aubard;G. Lévi
影响因子：
3.9
作者：
Lin, M.;He, L.;Mustapha, A.
通讯作者：
Mustapha, A.
影响因子：
7.4
作者：
Jarvis, Roger M.;Law, Nicholas;Goodacre, Royston
通讯作者：
Goodacre, Royston
DOI：
10.1016/j.saa.2009.02.006
发表时间：
2009-07-15
影响因子：
4.4
作者：
Yue, Zhicao;Zhuang, Fengfeng;Kumar, Rajar;Wong, Ieong;Cronin, Stephen B.;Liu, Yi-Hsin
通讯作者：
Liu, Yi-Hsin