SERS-based chip for discrimination of formaldehyde and acetaldehyde in aqueous solution using silver reduction

Huazhen Duan; Wei Deng; Zhenfei Gan; Dan Li; Dawei Li

doi:10.1007/s00604-019-3305-0

SERS-based chip for discrimination of formaldehyde and acetaldehyde in aqueous solution using silver reduction

Huazhen Duan
, Wei Deng
, Zhenfei Gan
, Dan Li^*
, Dawei Li

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

A method is described for surface-enhanced Raman scattering (SERS) discrimination of formaldehyde (FA) and acetaldehyde (AA) in aqueous sample solutions. It is based on the use of a paper strip containing 4-aminothiophenol (Atp)-modified reduced graphene oxide (rGO)/[Ag(NH ₃ ) ₂ ] ⁺ (rGO/[Ag(NH ₃ ) ₂ ] ⁺ /Atp). The addition of FA or AA induces the conversion of [Ag(NH ₃ ) ₂ ] ⁺ complex to silver nanoparticles (AgNPs) because of aldehyde-induced silver reduction reaction. The AgNPs possess strong SERS activity. The average interparticle gaps between the AgNPs can be fine-tuned by controlling the experimental conditions, this leading to the formation of optimized SERS hot spots. It is also found that the changes in the spectral shapes and the relative intensity ratio of the bands at 1143 and 1072 cm ⁻¹ result from the difference in the pH value of the surrounding solution. This effect enables the selective discrimination of FA and AA. The paper strip can be used as a SERS dipstick and swab for on-site determination of FA or AA in wine and human urine via the differences in the intensity of the SERS peaks. The assay works over a wide range of concentrations (0.45 ng·L ⁻¹ to 480 μg·L ⁻¹ ) for FA and AA, and the respective detection limits are 0.15 and 1.3 ng·L ⁻¹ . [Figure not available: see fulltext.].

Original language	English
Article number	175
Journal	Microchimica Acta
Volume	186
Issue number	3
DOIs	https://doi.org/10.1007/s00604-019-3305-0
State	Published - 1 Mar 2019
Externally published	Yes

Keywords

Food analysis
Nanomaterial
Nanoprobe
On-site detection
Paper-based analytical devices
Surface-enhance Raman spectroscopy
Tollens’ reagent
Volatile compounds

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title = "SERS-based chip for discrimination of formaldehyde and acetaldehyde in aqueous solution using silver reduction",

abstract = " A method is described for surface-enhanced Raman scattering (SERS) discrimination of formaldehyde (FA) and acetaldehyde (AA) in aqueous sample solutions. It is based on the use of a paper strip containing 4-aminothiophenol (Atp)-modified reduced graphene oxide (rGO)/[Ag(NH 3 ) 2 ] + (rGO/[Ag(NH 3 ) 2 ] + /Atp). The addition of FA or AA induces the conversion of [Ag(NH 3 ) 2 ] + complex to silver nanoparticles (AgNPs) because of aldehyde-induced silver reduction reaction. The AgNPs possess strong SERS activity. The average interparticle gaps between the AgNPs can be fine-tuned by controlling the experimental conditions, this leading to the formation of optimized SERS hot spots. It is also found that the changes in the spectral shapes and the relative intensity ratio of the bands at 1143 and 1072 cm −1 result from the difference in the pH value of the surrounding solution. This effect enables the selective discrimination of FA and AA. The paper strip can be used as a SERS dipstick and swab for on-site determination of FA or AA in wine and human urine via the differences in the intensity of the SERS peaks. The assay works over a wide range of concentrations (0.45 ng·L −1 to 480 μg·L −1 ) for FA and AA, and the respective detection limits are 0.15 and 1.3 ng·L −1 . [Figure not available: see fulltext.].",

keywords = "Food analysis, Nanomaterial, Nanoprobe, On-site detection, Paper-based analytical devices, Surface-enhance Raman spectroscopy, Tollens{\textquoteright} reagent, Volatile compounds",

author = "Huazhen Duan and Wei Deng and Zhenfei Gan and Dan Li and Dawei Li",

note = "Publisher Copyright: {\textcopyright} 2019, Springer-Verlag GmbH Austria, part of Springer Nature.",

year = "2019",

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doi = "10.1007/s00604-019-3305-0",

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TY - JOUR

T1 - SERS-based chip for discrimination of formaldehyde and acetaldehyde in aqueous solution using silver reduction

AU - Duan, Huazhen

AU - Deng, Wei

AU - Gan, Zhenfei

AU - Li, Dan

AU - Li, Dawei

PY - 2019/3/1

Y1 - 2019/3/1

N2 - A method is described for surface-enhanced Raman scattering (SERS) discrimination of formaldehyde (FA) and acetaldehyde (AA) in aqueous sample solutions. It is based on the use of a paper strip containing 4-aminothiophenol (Atp)-modified reduced graphene oxide (rGO)/[Ag(NH 3 ) 2 ] + (rGO/[Ag(NH 3 ) 2 ] + /Atp). The addition of FA or AA induces the conversion of [Ag(NH 3 ) 2 ] + complex to silver nanoparticles (AgNPs) because of aldehyde-induced silver reduction reaction. The AgNPs possess strong SERS activity. The average interparticle gaps between the AgNPs can be fine-tuned by controlling the experimental conditions, this leading to the formation of optimized SERS hot spots. It is also found that the changes in the spectral shapes and the relative intensity ratio of the bands at 1143 and 1072 cm −1 result from the difference in the pH value of the surrounding solution. This effect enables the selective discrimination of FA and AA. The paper strip can be used as a SERS dipstick and swab for on-site determination of FA or AA in wine and human urine via the differences in the intensity of the SERS peaks. The assay works over a wide range of concentrations (0.45 ng·L −1 to 480 μg·L −1 ) for FA and AA, and the respective detection limits are 0.15 and 1.3 ng·L −1 . [Figure not available: see fulltext.].

AB - A method is described for surface-enhanced Raman scattering (SERS) discrimination of formaldehyde (FA) and acetaldehyde (AA) in aqueous sample solutions. It is based on the use of a paper strip containing 4-aminothiophenol (Atp)-modified reduced graphene oxide (rGO)/[Ag(NH 3 ) 2 ] + (rGO/[Ag(NH 3 ) 2 ] + /Atp). The addition of FA or AA induces the conversion of [Ag(NH 3 ) 2 ] + complex to silver nanoparticles (AgNPs) because of aldehyde-induced silver reduction reaction. The AgNPs possess strong SERS activity. The average interparticle gaps between the AgNPs can be fine-tuned by controlling the experimental conditions, this leading to the formation of optimized SERS hot spots. It is also found that the changes in the spectral shapes and the relative intensity ratio of the bands at 1143 and 1072 cm −1 result from the difference in the pH value of the surrounding solution. This effect enables the selective discrimination of FA and AA. The paper strip can be used as a SERS dipstick and swab for on-site determination of FA or AA in wine and human urine via the differences in the intensity of the SERS peaks. The assay works over a wide range of concentrations (0.45 ng·L −1 to 480 μg·L −1 ) for FA and AA, and the respective detection limits are 0.15 and 1.3 ng·L −1 . [Figure not available: see fulltext.].

KW - Food analysis

KW - Nanomaterial

KW - Nanoprobe

KW - On-site detection

KW - Paper-based analytical devices

KW - Surface-enhance Raman spectroscopy

KW - Tollens’ reagent

KW - Volatile compounds

UR - https://www.scopus.com/pages/publications/85061573164

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DO - 10.1007/s00604-019-3305-0

M3 - 文章

C2 - 30771097

AN - SCOPUS:85061573164

SN - 0026-3672

VL - 186

JO - Microchimica Acta

JF - Microchimica Acta

IS - 3

M1 - 175

ER -

SERS-based chip for discrimination of formaldehyde and acetaldehyde in aqueous solution using silver reduction

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