Multifunctional ZnO/Ag nanorod array as highly sensitive substrate for surface enhanced Raman detection

Colloids and Surfaces. B, Biointerfaces
Guiye ShanYichun Liu

Abstract

A multifunctional ZnO/Ag nanorod arrays has been prepared to construct SERS-active and photocatalytic substrate by a hydrothermal method. The morphology, microstructure and optical properties of ZnO/Ag nanorod arrays are characterized by X-ray diffraction spectra, field emission scanning electron microscopy, energy-dispersive, ultraviolet-visible (UV-vis) absorption and photoluminescence measurement to confirm the successful Ag deposition on the ZnO nanorod arrays. Such arrays exhibit strong and reproducible SERS signals of the Raman probe molecules. The mechanism of SERS enhancement was discussed due to the formation of interfacial electric field between ZnO nanorods and Ag. Furthermore, ZnO/Ag nanorod arrays also show catalytic properties by photocatalytic degradation of target molecules adsorbed to the substrate, which provides promising application for detecting and eliminating organic pollutant.

References

Feb 2, 2010·Journal of Colloid and Interface Science·Hailong HuYukihiro Ozaki
Jul 29, 2010·ACS Applied Materials & Interfaces·Alagarsamy PandikumarRamasamy Ramaraj
Aug 19, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Mikhael BechelanyLaetitia Philippe

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Citations

Jan 7, 2014·Environmental Science and Pollution Research International·Yi LiWenlong Zhang
Feb 19, 2019·Advanced Materials·Padmanathan Karthick KannanChan-Hwa Chung
Nov 7, 2014·Reports on Progress in Physics·Wei Xie, Sebastian Schlücker
Oct 16, 2015·Nanotechnology·Nerea AlayoFrancesc Pérez-Murano

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