TiO2 Nanofoam–Nanotube Array for Surface-Enhanced Raman Scattering

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: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
College of Engineering & Physical Sciences > Energy and Bioproducts 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
Publication ISSN: 2574-0970
Last Modified: 10 Jun 2024 07:29
Date Deposited: 27 Nov 2018 14:45
Full Text Link:
Related URLs: https://pubs.ac ... /acsanm.8b01566 (Publisher URL)
PURE Output Type: Article
Published Date: 2018-12-28
Published Online Date: 2018-11-20
Accepted Date: 2018-11-20
Authors: Liu, Li
Pan, Fan
Liu, Chang
Huang, Liangliang
Li, Wei (ORCID Profile 0000-0003-4036-467X)
Lu, Xiaohua

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