Fabrication of sensitive graphene oxide decorated silver nanodendrites as SERS substrate

2020 ◽  
Author(s):  
Preeti Garg ◽  
R. K. Soni ◽  
R. Raman
Keyword(s):  
Graphene Oxide ◽  
Sers Substrate ◽  
Silver Nanodendrites

A silver/graphene oxide nanocomposite film as a flexible SERS substrate for reliable quantitative analysis using high-speed spiral scanning spectrometry

2017 ◽  
Vol 53 (73) ◽  
pp. 10108-10111 ◽  
Author(s):  
Yejung Choi ◽  
Si Won Song ◽  
Wytse Hooch Antink ◽  
Hyung Min Kim ◽  
Yuanzhe Piao
Keyword(s):  
Graphene Oxide ◽  
Quantitative Analysis ◽  
Nanocomposite Film ◽  
High Speed ◽  
Scanning System ◽  
Adhesive Tape ◽  
Sers Substrate ◽  
Spiral Scanning ◽  
System P

Excellent uniformity (∼1.5% RSD) in SERS signals was obtained from an Ag/GO decorated adhesive tape on a simple in-house cylindrical scanning system.

scholarly journals Fabrication of Silver Nanodendrites on Copper for Detecting Rhodamine 6G in Chili Powder Using Surface-enhanced Raman Spectroscopy

2021 ◽  
Vol 31 (4) ◽  
Author(s):  
Quynh-Ngan Luong ◽  
Tran Cao Dao ◽  
Thi Thu Vu ◽  
Manh Cuong Nguyen ◽  
Nhu Duong Nguyen
Keyword(s):  
Raman Spectroscopy ◽  
Rhodamine 6G ◽  
Surface Enhanced Raman Spectroscopy ◽  
Sers Substrate ◽  
Simple Method ◽  
Sers Substrates ◽  
Highly Active ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silver Nanodendrites

Surface-enhanced Raman spectroscopy (SERS) is increasingly being used as a method for detecting traces of contaminants in a variety of specimens. In order to maximize SERS’s performance, the most important thing is to have highly active SERS substrates. In this report, we present a simple method for synthesizing silver nanodendrites (AgNDs) on the surface of a copper (Cu) plate using chemical deposition method. The results showed that, after fabrication, a large number of fern-like AgNDs formed on the Cu surface. These AgNDs are distributed evenly across the entire Cu surface with a relatively thick density. The prepared AgNDs were applied as SERS substrates for detecting Rhodamine 6G (R6G) in chili powders. The results showed that, using the prepared AgNDs substrates, as low as 10−10 M R6G in chili powders can be detected. This demonstrates the applicability of fabricated AgNDs as a highly active SERS substrate.

scholarly journals High-performance SERS substrate based on hybrid structure of graphene oxide/AgNPs/Cu film@pyramid Si

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Zhe Li ◽  
Shi Cai Xu ◽  
Chao Zhang ◽  
Xiao Yun Liu ◽  
Sai Sai Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
High Performance ◽  
Hybrid Structure ◽  
Sers Substrate ◽  
Cu Film

Graphene oxide/gold nanorod plasmonic paper – a simple and cost-effective SERS substrate for anticancer drug analysis

2020 ◽  
Vol 44 (33) ◽  
pp. 14087-14094
Author(s):  
Kanyawan Ponlamuangdee ◽  
Gabor L. Hornyak ◽  
Tanujjal Bora ◽  
Suwussa Bamrungsap
Keyword(s):  
Graphene Oxide ◽  
Anticancer Drug ◽  
Gold Nanorods ◽  
Cost Effective ◽  
Drug Analysis ◽  
Gold Nanorod ◽  
Sers Substrate ◽  
Plasmonic Paper

A simple and cost-effective plasmonic paper as a SERS substrate based on a combination of graphene oxide (GO) and gold nanorods (AuNRs).

scholarly journals Hydrophobic Paper-Based SERS Sensor Using Gold Nanoparticles Arranged on Graphene Oxide Flakes

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5471 ◽  
Author(s):  
Dong-Jin Lee ◽  
Dae Yu Kim
Keyword(s):  
Gold Nanoparticles ◽  
Graphene Oxide ◽  
Limit Of Detection ◽  
Point Of Care ◽  
Hydrophobic Surface ◽  
Sers Substrate ◽  
High Porosity ◽  
Paper Substrate ◽  
Surface Enhanced Raman ◽  
Hydrophobic Paper

Paper-based surface-enhanced Raman scattering (SERS) sensors have garnered much attention in the past decade owing to their ubiquity, ease of fabrication, and environmentally friendly substrate. The main drawbacks of a paper substrate for a SERS sensor are its high porosity, inherent hygroscopic nature, and hydrophilic surface property, which reduce the sensitivity and reproducibility of the SERS sensor. Here, we propose a simple, quick, convenient, and economical method for hydrophilic to hydrophobic surface modification of paper, while enhancing its mechanical and moisture-resistant properties. The hydrophobic paper (h-paper) was obtained by spin-coating diluted polydimethylsiloxane (PDMS) solution onto the filter paper, resulting in h-paper with an increased contact angle of up to ≈130°. To complete the h-paper-based SERS substrate, gold nanoparticles arranged on graphene oxide (AuNPs@GO) were synthesized using UV photoreduction, followed by drop-casting of AuNPs@GO solution on the h-paper substrate. The enhancement of the SERS signal was then assessed by attaching a rhodamine 6G (R6G) molecule as a Raman probe material to the h-paper-based SERS substrate. The limit of detection was 10 nM with an R2 of 0.966. The presented SERS sensor was also tested to detect a thiram at the micromolar level. We expect that our proposed AuNPs@GO/h-paper-based SERS sensor could be applied to point-of-care diagnostics applications in daily life and in spacecraft.

A novel sensitive and stable surface enhanced Raman scattering substrate based on a MoS2 quantum dot/reduced graphene oxide hybrid system

2018 ◽  
Vol 6 (46) ◽  
pp. 12547-12554 ◽  
Author(s):  
Di Wu ◽  
Jianli Chen ◽  
Yaner Ruan ◽  
Kai Sun ◽  
Kehua Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Molecular Detection ◽  
Sers Substrate ◽  
Stable Surface ◽  
System P ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

A MoS2 QD/rGO nanocomposite is synthesized as a novel highly sensitive and stable surface SERS substrate for dye molecular detection.

scholarly journals Efficient Capture and Raman Analysis of Circulating Tumor Cells by Nano-Undulated AgNPs-rGO Composite SERS Substrates

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5089
Author(s):  
Jong-Eun Park ◽  
Nuri Oh ◽  
Hyeono Nam ◽  
Ji-Ho Park ◽  
Sanha Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Cancer Cells ◽  
Tumor Cells ◽  
Circulating Tumor Cells ◽  
Electric Fields ◽  
Indium Tin Oxide ◽  
Hot Spot ◽  
Silver Nanowire ◽  
Sers Substrate

The analysis of circulating tumor cells (CTCs) in the peripheral blood of cancer patients is critical in clinical research for further investigation of tumor progression and metastasis. In this study, we present a novel surface-enhanced Raman scattering (SERS) substrate for the efficient capture and characterization of cancer cells using silver nanoparticles-reduced graphene oxide (AgNPs-rGO) composites. A pulsed laser reduction of silver nanowire-graphene oxide (AgNW-GO) mixture films induces hot-spot formations among AgNPs and artificial biointerfaces consisting of rGOs. We also use in situ electric field-assisted fabrication methods to enhance the roughness of the SERS substrate. The AgNW-GO mixture films, well suited for the proposed process due to its inherent electrophoretic motion, is adjusted between indium tin oxide (ITO) transparent electrodes and the nano-undulated surface is generated by applying direct-current (DC) electric fields during the laser process. As a result, MCF7 breast cancer cells are efficiently captured on the AgNPs-rGO substrates, about four times higher than the AgNWs-GO films, and the captured living cells are successfully analyzed by SERS spectroscopy. Our newly designed bifunctional substrate can be applied as an effective system for the capture and characterization of CTCs.

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