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SERS and the photo-catalytic performance of Ag/TiO^sub 2^/graphene composites

Three kinds of reusable surface enhanced Raman scattering (SERS) substrates based on Ag-TiO2-G, Ag-G-TiO2 and G-Ag-TiO2 hybrid structures were prepared by a combination method of simple sol-gel self-assembly and annealing. The composites were confirmed by transmission electron microscopy (TEM) and e... Full description

Journal Title: Optical Materials Express Apr 1, 2018, Vol.8(4), p.704
Main Author: Zhang, Xiaolei
Other Authors: Wang, Ning , Liu, Ruijia , Wang, Xinyu , Zhu, Yong , Zhang, Jie
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 2159-3930
Link: http://search.proquest.com/docview/2115233172/?pq-origsite=primo
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title: SERS and the photo-catalytic performance of Ag/TiO^sub 2^/graphene composites
format: Article
creator:
  • Zhang, Xiaolei
  • Wang, Ning
  • Liu, Ruijia
  • Wang, Xinyu
  • Zhu, Yong
  • Zhang, Jie
subjects:
  • Ultraviolet Radiation
  • Charge Transfer
  • Raman Spectra
  • Sol-Gel Processes
  • Energy Dispersive X Ray Spectroscopy
  • Graphene
  • Self Assembly
  • Spectrum Analysis
  • Substrates
  • Energy Transmission
  • Titanium Dioxide
  • Transmission Electron Microscopy
  • Mapping
  • Catalysis
  • Rhodamine 6g
  • Hybrid Structures
  • Nanoparticles
  • Rhodamine
  • Composite Materials
  • Silver
ispartof: Optical Materials Express, Apr 1, 2018, Vol.8(4), p.704
description: Three kinds of reusable surface enhanced Raman scattering (SERS) substrates based on Ag-TiO2-G, Ag-G-TiO2 and G-Ag-TiO2 hybrid structures were prepared by a combination method of simple sol-gel self-assembly and annealing. The composites were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS). Raman mapping spectra of the three hybrids were analyzed in order to study the difference of charge transfer between Ag, TiO2 and graphene. In addition, rhodamine 6G (R6G) was used as the probe analyte, and the SERS activity of the three structures decreased orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, with the enhancement factor of about 106, which was due to the high electromagnetic enhancement of the Ag nanoparticles (AgNPs). The photo-catalytic properties of the three kinds of composites were experimentally studied via Raman mapping measurements through UV irradiation. The photocatalytic ability decreased also orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, and the reason was discussed in details.
language: eng
source:
identifier: E-ISSN: 2159-3930
fulltext: fulltext
issn:
  • 21593930
  • 2159-3930
url: Link


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titleSERS and the photo-catalytic performance of Ag/TiO^sub 2^/graphene composites
creatorZhang, Xiaolei ; Wang, Ning ; Liu, Ruijia ; Wang, Xinyu ; Zhu, Yong ; Zhang, Jie
ispartofOptical Materials Express, Apr 1, 2018, Vol.8(4), p.704
identifierE-ISSN: 2159-3930
subjectUltraviolet Radiation ; Charge Transfer ; Raman Spectra ; Sol-Gel Processes ; Energy Dispersive X Ray Spectroscopy ; Graphene ; Self Assembly ; Spectrum Analysis ; Substrates ; Energy Transmission ; Titanium Dioxide ; Transmission Electron Microscopy ; Mapping ; Catalysis ; Rhodamine 6g ; Hybrid Structures ; Nanoparticles ; Rhodamine ; Composite Materials ; Silver
descriptionThree kinds of reusable surface enhanced Raman scattering (SERS) substrates based on Ag-TiO2-G, Ag-G-TiO2 and G-Ag-TiO2 hybrid structures were prepared by a combination method of simple sol-gel self-assembly and annealing. The composites were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS). Raman mapping spectra of the three hybrids were analyzed in order to study the difference of charge transfer between Ag, TiO2 and graphene. In addition, rhodamine 6G (R6G) was used as the probe analyte, and the SERS activity of the three structures decreased orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, with the enhancement factor of about 106, which was due to the high electromagnetic enhancement of the Ag nanoparticles (AgNPs). The photo-catalytic properties of the three kinds of composites were experimentally studied via Raman mapping measurements through UV irradiation. The photocatalytic ability decreased also orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, and the reason was discussed in details.
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descriptionThree kinds of reusable surface enhanced Raman scattering (SERS) substrates based on Ag-TiO2-G, Ag-G-TiO2 and G-Ag-TiO2 hybrid structures were prepared by a combination method of simple sol-gel self-assembly and annealing. The composites were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS). Raman mapping spectra of the three hybrids were analyzed in order to study the difference of charge transfer between Ag, TiO2 and graphene. In addition, rhodamine 6G (R6G) was used as the probe analyte, and the SERS activity of the three structures decreased orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, with the enhancement factor of about 106, which was due to the high electromagnetic enhancement of the Ag nanoparticles (AgNPs). The photo-catalytic properties of the three kinds of composites were experimentally studied via Raman mapping measurements through UV irradiation. The photocatalytic ability decreased also orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, and the reason was discussed in details.
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abstractThree kinds of reusable surface enhanced Raman scattering (SERS) substrates based on Ag-TiO2-G, Ag-G-TiO2 and G-Ag-TiO2 hybrid structures were prepared by a combination method of simple sol-gel self-assembly and annealing. The composites were confirmed by transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS). Raman mapping spectra of the three hybrids were analyzed in order to study the difference of charge transfer between Ag, TiO2 and graphene. In addition, rhodamine 6G (R6G) was used as the probe analyte, and the SERS activity of the three structures decreased orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, with the enhancement factor of about 106, which was due to the high electromagnetic enhancement of the Ag nanoparticles (AgNPs). The photo-catalytic properties of the three kinds of composites were experimentally studied via Raman mapping measurements through UV irradiation. The photocatalytic ability decreased also orderly in the sequence of Ag-G-TiO2, G-Ag-TiO2, and Ag-TiO2-G, and the reason was discussed in details.
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pubOptical Society of America
urlhttp://search.proquest.com/docview/2115233172/
pages704-717
doi10.1364/OME.8.000704
issnOptical Materials Express
date2018-04-01