探索铂和钯纳米结构通过拉曼光谱法检测有机分子的效能。

Exploring the Efficacy of Platinum and Palladium Nanostructures for Organic Molecule Detection via Raman Spectroscopy.

作者信息

Tran Minh, Whale Alison, Padalkar Sonal

机构信息

Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA.

Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA.

出版信息

Sensors (Basel). 2018 Jan 7;18(1):147. doi: 10.3390/s18010147.

Noble transition metals, like palladium (Pd) and platinum (Pt), have been well-known for their excellent catalytic and electrochemical properties. However, they have been considered non-active for surface enhanced Raman spectroscopy (SERS). In this work, we explore the scattering contributions of Pd and Pt for the detection of organic molecules. The Pd and Pt nanostructures were synthesized on silicon substrate using a modified galvanic displacement method. The results show Pt nanoparticles and dendritic Pd nanostructures with controlled density and size. The influence of surfactants, including sodium dodecyl sulfate and cetyltrimethylammonium bromide, on the size and morphology of the nanostructures was investigated. The Pd and Pt nanostructures with a combination of large size and high density were then used to explore their applicability for the detection of 10 M Rhodamine 6G and 10 M paraoxon.

贵金属过渡金属，如钯（Pd）和铂（Pt），因其优异的催化和电化学性能而闻名。然而，它们一直被认为对表面增强拉曼光谱（SERS）无活性。在这项工作中，我们探索了钯和铂对有机分子检测的散射贡献。采用改进的电化置换法在硅衬底上合成了钯和铂纳米结构。结果显示了具有可控密度和尺寸的铂纳米颗粒和树枝状钯纳米结构。研究了包括十二烷基硫酸钠和十六烷基三甲基溴化铵在内的表面活性剂对纳米结构尺寸和形态的影响。然后，将具有大尺寸和高密度组合的钯和铂纳米结构用于探索它们对10 M罗丹明6G和10 M对氧磷的检测适用性。