Carbon nanostructure (0-3 dimensional) supported isolated gold nanoparticles as an effective SERS substrate

Shiju Abraham; Matthias König; Sunil K. Srivastava; Vinod Kumar; Bernd Walkenfort; Anchal Srivastava

doi:10.1016/j.snb.2018.06.066

Carbon nanostructure (0-3 dimensional) supported isolated gold nanoparticles as an effective SERS substrate

Shiju Abraham, Matthias König, Sunil K. Srivastava, Vinod Kumar, Bernd Walkenfort, Anchal Srivastava

Zuckerberg Institute for Water Research

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

13 Scopus citations

Abstract

The present work reports a comparative surface enhanced Raman scattering (SERS) study of nanohybrids of spatially isolated gold nanoparticles (Au NPs) with different carbon nanostructures (CNS). For a meticulous comparative analysis, different CNS covering from zero dimensional to three dimensions were used. SERS activities of developed nanohybrids platforms were evaluated with a Raman marker i.e. Mercaptobenzoic acid (4-MBA, 1 μM). Synergistic Raman signal enhancement from each Au NP (electromagnetic enhancement) and underlying CNS matrix (chemical enhancement) was observed in nanohybrid enabling detection of very small concentration of 4-MBA i.e. 1 μM convincingly. Among the different underlying matrix, GQDs-Au NPs based SERS platform have shown highest SERS enhancement by a factor of 10⁷, followed by GO-Au NPs combination (∼ 3 × 10⁶) and others. Enhanced SERS activity of GQDs -Au NPs -4-MBA nanohybrid platform is attributed to the D and G bands of GQDs, overpowering the strong fluorescent background of GQDs alone. Reported nanohybrids; specially GQDs-Au NPs offers numerous possibilities to be used as sensitive and reproducible SERS platform for the detection of other biologically/chemically important analytes, showing potential for standardization in near future.

Original language	English
Pages (from-to)	455-465
Number of pages	11
Journal	Sensors and Actuators, B: Chemical
Volume	273
DOIs	https://doi.org/10.1016/j.snb.2018.06.066
State	Published - 10 Nov 2018

Keywords

Carbon nanostructures
Isolated gold nanoparticles
Raman marker
SERS

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.snb.2018.06.066

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title = "Carbon nanostructure (0-3 dimensional) supported isolated gold nanoparticles as an effective SERS substrate",

abstract = "The present work reports a comparative surface enhanced Raman scattering (SERS) study of nanohybrids of spatially isolated gold nanoparticles (Au NPs) with different carbon nanostructures (CNS). For a meticulous comparative analysis, different CNS covering from zero dimensional to three dimensions were used. SERS activities of developed nanohybrids platforms were evaluated with a Raman marker i.e. Mercaptobenzoic acid (4-MBA, 1 μM). Synergistic Raman signal enhancement from each Au NP (electromagnetic enhancement) and underlying CNS matrix (chemical enhancement) was observed in nanohybrid enabling detection of very small concentration of 4-MBA i.e. 1 μM convincingly. Among the different underlying matrix, GQDs-Au NPs based SERS platform have shown highest SERS enhancement by a factor of 107, followed by GO-Au NPs combination (∼ 3 × 106) and others. Enhanced SERS activity of GQDs -Au NPs -4-MBA nanohybrid platform is attributed to the D and G bands of GQDs, overpowering the strong fluorescent background of GQDs alone. Reported nanohybrids; specially GQDs-Au NPs offers numerous possibilities to be used as sensitive and reproducible SERS platform for the detection of other biologically/chemically important analytes, showing potential for standardization in near future.",

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author = "Shiju Abraham and Matthias K{\"o}nig and Srivastava, {Sunil K.} and Vinod Kumar and Bernd Walkenfort and Anchal Srivastava",

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AU - Abraham, Shiju

AU - König, Matthias

AU - Srivastava, Sunil K.

AU - Kumar, Vinod

AU - Walkenfort, Bernd

AU - Srivastava, Anchal

PY - 2018/11/10

Y1 - 2018/11/10

N2 - The present work reports a comparative surface enhanced Raman scattering (SERS) study of nanohybrids of spatially isolated gold nanoparticles (Au NPs) with different carbon nanostructures (CNS). For a meticulous comparative analysis, different CNS covering from zero dimensional to three dimensions were used. SERS activities of developed nanohybrids platforms were evaluated with a Raman marker i.e. Mercaptobenzoic acid (4-MBA, 1 μM). Synergistic Raman signal enhancement from each Au NP (electromagnetic enhancement) and underlying CNS matrix (chemical enhancement) was observed in nanohybrid enabling detection of very small concentration of 4-MBA i.e. 1 μM convincingly. Among the different underlying matrix, GQDs-Au NPs based SERS platform have shown highest SERS enhancement by a factor of 107, followed by GO-Au NPs combination (∼ 3 × 106) and others. Enhanced SERS activity of GQDs -Au NPs -4-MBA nanohybrid platform is attributed to the D and G bands of GQDs, overpowering the strong fluorescent background of GQDs alone. Reported nanohybrids; specially GQDs-Au NPs offers numerous possibilities to be used as sensitive and reproducible SERS platform for the detection of other biologically/chemically important analytes, showing potential for standardization in near future.

AB - The present work reports a comparative surface enhanced Raman scattering (SERS) study of nanohybrids of spatially isolated gold nanoparticles (Au NPs) with different carbon nanostructures (CNS). For a meticulous comparative analysis, different CNS covering from zero dimensional to three dimensions were used. SERS activities of developed nanohybrids platforms were evaluated with a Raman marker i.e. Mercaptobenzoic acid (4-MBA, 1 μM). Synergistic Raman signal enhancement from each Au NP (electromagnetic enhancement) and underlying CNS matrix (chemical enhancement) was observed in nanohybrid enabling detection of very small concentration of 4-MBA i.e. 1 μM convincingly. Among the different underlying matrix, GQDs-Au NPs based SERS platform have shown highest SERS enhancement by a factor of 107, followed by GO-Au NPs combination (∼ 3 × 106) and others. Enhanced SERS activity of GQDs -Au NPs -4-MBA nanohybrid platform is attributed to the D and G bands of GQDs, overpowering the strong fluorescent background of GQDs alone. Reported nanohybrids; specially GQDs-Au NPs offers numerous possibilities to be used as sensitive and reproducible SERS platform for the detection of other biologically/chemically important analytes, showing potential for standardization in near future.

KW - Carbon nanostructures

KW - Isolated gold nanoparticles

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Carbon nanostructure (0-3 dimensional) supported isolated gold nanoparticles as an effective SERS substrate

Abstract

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