Ordered arrays of Ag nanodendrite clusters as effective surface-enhanced Raman scattering substrates

We report a cheap synthetic approach to large-area ordered Ag nanodendrite cluster arrays as effective surface-enhanced Raman scattering (SERS) substrates, on a Zn plate coated with periodical porous photoresist via galvanic replacement reaction of Zn and AgNO 3 in aqueous solution. Due to the geome...

Full description

Saved in:
Bibliographic Details
Published in:RSC advances 2016-01, Vol.6 (32), p.2649-26494
Main Authors: Zuo, Jie, Meng, Guowen, Zhu, Chuhong, Zhou, Qitao, Li, Zhongbo, Ke, Yan, Zhou, Ningning
Format: Article
Language:English
Subjects:
Arrays
Clusters
Nanostructure
Pesticides
Photoresists
Raman scattering
Silver
Zinc
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report a cheap synthetic approach to large-area ordered Ag nanodendrite cluster arrays as effective surface-enhanced Raman scattering (SERS) substrates, on a Zn plate coated with periodical porous photoresist via galvanic replacement reaction of Zn and AgNO 3 in aqueous solution. Due to the geometrical confinement of the porous photoresist template coated on the Zn plate, the well-positioned Ag nanodendrite clusters are distributed on the Zn plate in ordered arrays. It is demonstrated that citric acid is essential to the formation of the nanodendrite cluster arrays. The resultant Ag nanodendrite cluster arrays not only have high SERS-activity to rhodamine 6G with good signal reproducibility but also can identify thiram (a widely-used pesticide) even at 0.1 μM level, showing potential in SERS-based detection of pesticide remnants in the environment. Large-area ordered Ag nanodendrite cluster tetragonal arrays have been achieved on a Zn plate via galvanic replacement reaction.
ISSN:2046-2069
2046-2069
DOI:10.1039/c6ra03223k