Plasmonic Spherical Nanoparticles Coupled with Titania Nanotube Arrays Prepared by Anodization as Substrates for Surface-Enhanced Raman Spectroscopy Applications: A Review

Molecules

Juan Pablo Galindo-Lazo¹  Monica Cerro-Lopez¹  Miguel Angel Mendez-Rojas¹  Jessica Rosaura Campos-Delgado¹  Jorge Jimenez-Cisneros¹ 

[1] Department of Chemical and Biological Sciences, University of the Américas Puebla, Sta. Catarina Mártir s/n, Cholula, Puebla 72810, Mexico;

关键词: titania nanotubes;    surface-enhanced Raman spectroscopy (SERS);    silver nanoparticles;    gold nanoparticles;    platinum nanoparticles;    plasmon resonance;   

DOI  :  10.3390/molecules26247443

来源: DOAJ

【 摘 要 】

As surface-enhanced Raman spectroscopy (SERS) continues developing to be a powerful analytical tool for several probes, four important aspects to make it more accessible have to be addressed: low-cost, reproducibility, high sensibility, and recyclability. Titanium dioxide nanotubes (TiO₂ NTs) prepared by anodization have attracted interest in this field because they can be used as safe solid supports to deposit metal nanoparticles to build SERS substrate nanoplatforms that meet these four desired aspects. TiO₂ NTs can be easily prepared and, by varying different synthesis parameters, their dimensions and specific features of their morphology can be tuned allowing them to support metal nanoparticles of different sizes that can achieve a regular dispersion on their surface promoting high enhancement factors (EF) and reproducibility. Besides, the TiO₂ photocatalytic properties enable the substrate’s self-cleaning property for recyclability. In this review, we discuss the different methodological strategies that have been tested to achieve a high performance of the SERS substrates based on TiO₂ NTs as solid support for the three main noble metal nanoparticles mainly studied for this purpose: Ag, Au, and Pt.

【 授权许可】

Unknown