TiO2 Nanofoam–Nanotube Array for Surface-Enhanced Raman Scattering

Liu, Li, Pan, Fan, Liu, Chang, Huang, Liangliang, Li, Wei and Lu, Xiaohua (2018). TiO2 Nanofoam–Nanotube Array for Surface-Enhanced Raman Scattering. ACS Applied Nano Materials ,

Abstract

By tuning the anodic voltage and electrochemical reaction time, we have synthesized a series of TiO2 nanofoam–nanotube array structures via a two-step anodic oxidation process. The produced nanofoam–nanotube array demonstrated a remarkable Raman scattering enhancement. The maximum enhancement factors are 2.3 × 105 for methylene blue. Factors such as the nanotube pore size, nanofoam, and solute concentration have been investigated. The Raman scattering enhancement is attributed to the existence of the nanofoam structure, which enables multiple laser scatterings among the periodic voids and allows for the occurrence of Raman scattering. The proposed simple and inexpensive approach can promote the use of TiO2 materials for surface-enhanced Raman scattering applications in chemistry, biology, and nanoscience.

Publication DOI: https://doi.org/10.1021/acsanm.8b01566
Divisions: Engineering & Applied Sciences
Engineering & Applied Sciences > Polymer and advanced materials research group
Engineering & Applied Sciences > European Bioenergy Research Institute (EBRI)
Additional Information: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Applied Nano Materials, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acsanm.8b01566
Full Text Link:
Related URLs: https://pubs.ac ... /acsanm.8b01566 (Publisher URL)
Published Online Date: 2018-11-20
Authors: Liu, Li
Pan, Fan
Liu, Chang
Huang, Liangliang
Li, Wei ( 0000-0003-4036-467X)
Lu, Xiaohua

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Version: Accepted Version

Access Restriction: Restricted to Repository staff only until 20 November 2019.


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