Nitrogen doped graphene quantum dots effectively preserve the surface enhancement performance of silver nanoparticles (Conference Presentation)

Jian Ju; Wei Liu; Keren Chen; Clint Michael Perlaki; Chunhua Feng; Quan Liu

doi:10.1117/12.2250452

21 April 2017 Nitrogen doped graphene quantum dots effectively preserve the surface enhancement performance of silver nanoparticles (Conference Presentation)

Jian Ju, Wei Liu, Keren Chen, Clint Michael Perlaki, Chunhua Feng, Quan Liu

Author Affiliations +

Proceedings Volume 10080, Plasmonics in Biology and Medicine XIV; 100800D (2017) https://doi.org/10.1117/12.2250452
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

In this work, we report a novel substrate for surface enhanced Raman spectroscopy (SERS) composed of silver nanoparticles protected by small nitrogen-doped Graphene Quantum Dots, i.e. Ag NPs-N-GQDs, synthesized under mild experimental conditions, which can preserve the SERS performance in normal indoor environment for up to 30 days. The field emission scanning electronic microscope (FESEM) images confirm that the N-GQDs play a significant role in the control of metallic nanoparticles morphology. The X-ray photoelectron spectroscopy (XPS) result clearly indicates the N-GQDs was successfully immobilized on the surface of silver nanoparticles (Ag NPs). Ag NPs-N-GQDs demonstrated Raman enhancement stronger than pure Ag NPs likely due to an increase in the number of the “hotspots” formed by coupled nanostructures. N-GQD protected Ag NPs were evaluated in SERS measurements of R6G when they were made fresh and have been stored in normal indoors condition for up to 30 days. Then Ag NPs-N-GQDs were used as a SERS substrate for glucose detection. The linearity range of glucose was found to be ranged from 1 μM to 1 M with a detection limit of 0.1 μM in glucose solutions. It was also applied successfully for glucose detection in rat blood samples. The present study demonstrates that the novel Ag NPs−N-GQDs nanostructure has great potential to be used as a cost effective sustained SERS substrate, which can be extremely useful in the wide adoption of SERS based sensors.

Conference Presentation

Citation Download Citation

Jian Ju, Wei Liu, Keren Chen, Clint Michael Perlaki, Chunhua Feng, and Quan Liu "Nitrogen doped graphene quantum dots effectively preserve the surface enhancement performance of silver nanoparticles (Conference Presentation)", Proc. SPIE 10080, Plasmonics in Biology and Medicine XIV, 100800D (21 April 2017); https://doi.org/10.1117/12.2250452

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Silver

Nanoparticles

Surface enhanced Raman spectroscopy

Glucose

Graphene

Quantum dots

Nanostructures

Show All Keywords

Keywords/Phrases

Search In:

Publication Years