3D ZnO/Ag surface-enhanced Raman scattering on disposable and flexible cardboard platforms

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In the present study, zinc oxide (ZnO) nanorods (NRs) with a hexagonal structure have been synthesized via a hydrothermal method assisted by microwave radiation, using specialized cardboard materials as substrates. Cardboard-type substrates are cost-efficient and robust paper-based platforms that can be integrated into several opto-electronic applications for medical diagnostics, analysis and/or quality control devices. This class of substrates also enables highly-sensitive Raman molecular detection, amiable to several different operational environments and target surfaces. The structural characterization of the ZnO NR arrays has been carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical measurements. The effects of the synthesis time (5-30 min) and temperature (70-130 °C) of the ZnO NR arrays decorated with silver nanoparticles (AgNPs) have been investigated in view of their application for surface-enhanced Raman scattering (SERS) molecular detection. The size and density of the ZnO NRs, as well as those of the AgNPs, are shown to play a central role in the final SERS response. A Raman enhancement factor of 7 × 105 was obtained using rhodamine 6 G (RG6) as the test analyte; a ZnO NR array was produced for only 5 min at 70 °C. This condition presents higher ZnO NR and AgNP densities, thereby increasing the total number of plasmonic "hot-spots", their volume coverage and the number of analyte molecules that are subject to enhanced sensing.

Original languageEnglish
Article number1351
JournalMaterials
Volume10
Issue number12
DOIs
Publication statusPublished - 24 Nov 2017

Fingerprint

Zinc Oxide
Zinc oxide
Nanorods
Raman scattering
Substrates
Rhodamines
Silver
Quality control
Microwaves
Nanoparticles
X ray diffraction
Scanning electron microscopy
Molecules
Costs

Keywords

  • Ag nanoparticles
  • Cardboard substrates; SERS
  • Microwave synthesis
  • ZnO nanorods

Cite this

@article{6a2116d291f6483fa7faa8e5ad370c67,
title = "3D ZnO/Ag surface-enhanced Raman scattering on disposable and flexible cardboard platforms",
abstract = "In the present study, zinc oxide (ZnO) nanorods (NRs) with a hexagonal structure have been synthesized via a hydrothermal method assisted by microwave radiation, using specialized cardboard materials as substrates. Cardboard-type substrates are cost-efficient and robust paper-based platforms that can be integrated into several opto-electronic applications for medical diagnostics, analysis and/or quality control devices. This class of substrates also enables highly-sensitive Raman molecular detection, amiable to several different operational environments and target surfaces. The structural characterization of the ZnO NR arrays has been carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical measurements. The effects of the synthesis time (5-30 min) and temperature (70-130 °C) of the ZnO NR arrays decorated with silver nanoparticles (AgNPs) have been investigated in view of their application for surface-enhanced Raman scattering (SERS) molecular detection. The size and density of the ZnO NRs, as well as those of the AgNPs, are shown to play a central role in the final SERS response. A Raman enhancement factor of 7 × 105 was obtained using rhodamine 6 G (RG6) as the test analyte; a ZnO NR array was produced for only 5 min at 70 °C. This condition presents higher ZnO NR and AgNP densities, thereby increasing the total number of plasmonic {"}hot-spots{"}, their volume coverage and the number of analyte molecules that are subject to enhanced sensing.",
keywords = "Ag nanoparticles, Cardboard substrates; SERS, Microwave synthesis, ZnO nanorods",
author = "Pimentel, {Ana Cl{\'a}udia Madeira Botas Gomes} and Andreia Ara{\'u}jo and Coelho, {Beatriz J.} and D. Nunes and Oliveira, {Maria J.} and Mendes, {M. J.} and Hugo Aguas and Rodrigo Martins and Elvira Fortunato",
note = "info:eu-repo/grantAgreement/FCT/SFRH/SFRH{\%}2FBPD{\%}2F76992{\%}2F2011/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH{\%}2FBD{\%}2F85587{\%}2F2012/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH{\%}2FBPD{\%}2F84215{\%}2F2012/PT# info:eu-repo/grantAgreement/FCT/5876/147333/PT# POCI-01-0145-FEDER-007688. Project DISERTOX (PTDC/CTM-NAN/2912/2014)",
year = "2017",
month = "11",
day = "24",
doi = "10.3390/ma10121351",
language = "English",
volume = "10",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI",
number = "12",

}

3D ZnO/Ag surface-enhanced Raman scattering on disposable and flexible cardboard platforms. / Pimentel, Ana Cláudia Madeira Botas Gomes; Araújo, Andreia; Coelho, Beatriz J.; Nunes, D.; Oliveira, Maria J.; Mendes, M. J.; Aguas, Hugo; Martins, Rodrigo; Fortunato, Elvira.

In: Materials, Vol. 10, No. 12, 1351, 24.11.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - 3D ZnO/Ag surface-enhanced Raman scattering on disposable and flexible cardboard platforms

AU - Pimentel, Ana Cláudia Madeira Botas Gomes

AU - Araújo, Andreia

AU - Coelho, Beatriz J.

AU - Nunes, D.

AU - Oliveira, Maria J.

AU - Mendes, M. J.

AU - Aguas, Hugo

AU - Martins, Rodrigo

AU - Fortunato, Elvira

N1 - info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F76992%2F2011/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F85587%2F2012/PT# info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F84215%2F2012/PT# info:eu-repo/grantAgreement/FCT/5876/147333/PT# POCI-01-0145-FEDER-007688. Project DISERTOX (PTDC/CTM-NAN/2912/2014)

PY - 2017/11/24

Y1 - 2017/11/24

N2 - In the present study, zinc oxide (ZnO) nanorods (NRs) with a hexagonal structure have been synthesized via a hydrothermal method assisted by microwave radiation, using specialized cardboard materials as substrates. Cardboard-type substrates are cost-efficient and robust paper-based platforms that can be integrated into several opto-electronic applications for medical diagnostics, analysis and/or quality control devices. This class of substrates also enables highly-sensitive Raman molecular detection, amiable to several different operational environments and target surfaces. The structural characterization of the ZnO NR arrays has been carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical measurements. The effects of the synthesis time (5-30 min) and temperature (70-130 °C) of the ZnO NR arrays decorated with silver nanoparticles (AgNPs) have been investigated in view of their application for surface-enhanced Raman scattering (SERS) molecular detection. The size and density of the ZnO NRs, as well as those of the AgNPs, are shown to play a central role in the final SERS response. A Raman enhancement factor of 7 × 105 was obtained using rhodamine 6 G (RG6) as the test analyte; a ZnO NR array was produced for only 5 min at 70 °C. This condition presents higher ZnO NR and AgNP densities, thereby increasing the total number of plasmonic "hot-spots", their volume coverage and the number of analyte molecules that are subject to enhanced sensing.

AB - In the present study, zinc oxide (ZnO) nanorods (NRs) with a hexagonal structure have been synthesized via a hydrothermal method assisted by microwave radiation, using specialized cardboard materials as substrates. Cardboard-type substrates are cost-efficient and robust paper-based platforms that can be integrated into several opto-electronic applications for medical diagnostics, analysis and/or quality control devices. This class of substrates also enables highly-sensitive Raman molecular detection, amiable to several different operational environments and target surfaces. The structural characterization of the ZnO NR arrays has been carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical measurements. The effects of the synthesis time (5-30 min) and temperature (70-130 °C) of the ZnO NR arrays decorated with silver nanoparticles (AgNPs) have been investigated in view of their application for surface-enhanced Raman scattering (SERS) molecular detection. The size and density of the ZnO NRs, as well as those of the AgNPs, are shown to play a central role in the final SERS response. A Raman enhancement factor of 7 × 105 was obtained using rhodamine 6 G (RG6) as the test analyte; a ZnO NR array was produced for only 5 min at 70 °C. This condition presents higher ZnO NR and AgNP densities, thereby increasing the total number of plasmonic "hot-spots", their volume coverage and the number of analyte molecules that are subject to enhanced sensing.

KW - Ag nanoparticles

KW - Cardboard substrates; SERS

KW - Microwave synthesis

KW - ZnO nanorods

UR - http://www.scopus.com/inward/record.url?scp=85034977259&partnerID=8YFLogxK

U2 - 10.3390/ma10121351

DO - 10.3390/ma10121351

M3 - Article

VL - 10

JO - Materials

JF - Materials

SN - 1996-1944

IS - 12

M1 - 1351

ER -