Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles

Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles

Ag–Pt nanoparticles, grafted on Ge wafer, were synthesized by the galvanic replacement reaction based on their different potentials. Detailed characterization through scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS) and X-ray photo-elelctron spectroscopy (XPS) proved th...

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Main Authors: Tao Wang, Juhong Zhou, Yan Wang
Format: Article
Language:English
Published: MDPI AG 2018-05-01
Series:Nanomaterials
Subjects:
germanium
surface-enhanced Raman scattering
Ag–Pt nanoparticles
Online Access:http://www.mdpi.com/2079-4991/8/5/331
id doaj-8b838f5c89994b978745fa6f5c855689
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spelling doaj-8b838f5c89994b978745fa6f5c8556892020-11-25T01:01:36ZengMDPI AGNanomaterials2079-49912018-05-018533110.3390/nano8050331nano8050331Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt NanoparticlesTao Wang0Juhong Zhou1Yan Wang2Provincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, ChinaProvincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, ChinaProvincial Key Laboratory of Functional Coordination Compounds and Nanomaterials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246001, ChinaAg–Pt nanoparticles, grafted on Ge wafer, were synthesized by the galvanic replacement reaction based on their different potentials. Detailed characterization through scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS) and X-ray photo-elelctron spectroscopy (XPS) proved that Ag–Pt nanoparticles are composed of large Ag nanoparticles and many small Pt nanoparticles instead of an Ag–Pt alloy. When applied as surface-enhanced Raman scattering (SERS) substrates to detect Rhodamine 6G (1 × 10−8 M) or Crystal violet (1 × 10−7 M) aqueous solution in the line mapping mode, all of the obtained relative standard deviation (RSD) values of the major characteristic peak intensities, calculated from the SERS spectra of 100 serial spots, were less than 10%. The fabrication process of the SERS substrate has excellent uniformity and reproducibility and is simple, low-cost and time-saving, which will benefit studies on the platinum-catalyzed reaction mechanisms in situ and widen the practical application of SERS.http://www.mdpi.com/2079-4991/8/5/331germaniumsurface-enhanced Raman scatteringAg–Pt nanoparticles
collection DOAJ
language English
format Article
sources DOAJ
author Tao Wang
Juhong Zhou
Yan Wang
spellingShingle Tao Wang
Juhong Zhou
Yan Wang
Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
Nanomaterials
germanium
surface-enhanced Raman scattering
Ag–Pt nanoparticles
author_facet Tao Wang
Juhong Zhou
Yan Wang
author_sort Tao Wang
title Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
title_short Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
title_full Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
title_fullStr Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
title_full_unstemmed Simple, Low-Cost Fabrication of Highly Uniform and Reproducible SERS Substrates Composed of Ag–Pt Nanoparticles
title_sort simple, low-cost fabrication of highly uniform and reproducible sers substrates composed of ag–pt nanoparticles
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2018-05-01
description Ag–Pt nanoparticles, grafted on Ge wafer, were synthesized by the galvanic replacement reaction based on their different potentials. Detailed characterization through scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS) and X-ray photo-elelctron spectroscopy (XPS) proved that Ag–Pt nanoparticles are composed of large Ag nanoparticles and many small Pt nanoparticles instead of an Ag–Pt alloy. When applied as surface-enhanced Raman scattering (SERS) substrates to detect Rhodamine 6G (1 × 10−8 M) or Crystal violet (1 × 10−7 M) aqueous solution in the line mapping mode, all of the obtained relative standard deviation (RSD) values of the major characteristic peak intensities, calculated from the SERS spectra of 100 serial spots, were less than 10%. The fabrication process of the SERS substrate has excellent uniformity and reproducibility and is simple, low-cost and time-saving, which will benefit studies on the platinum-catalyzed reaction mechanisms in situ and widen the practical application of SERS.
topic germanium
surface-enhanced Raman scattering
Ag–Pt nanoparticles
url http://www.mdpi.com/2079-4991/8/5/331
work_keys_str_mv AT taowang simplelowcostfabricationofhighlyuniformandreproducibleserssubstratescomposedofagptnanoparticles
AT juhongzhou simplelowcostfabricationofhighlyuniformandreproducibleserssubstratescomposedofagptnanoparticles
AT yanwang simplelowcostfabricationofhighlyuniformandreproducibleserssubstratescomposedofagptnanoparticles
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