Hydrophilic-hydrophobic graphitic carbon nitride@silver hybrid substrate for recyclable surface-enhanced Raman scattering-based detection without coffee ring effect

Silver nanoparticles stabilized using sodium alginate were synthesized as SERS substrate to determine vardenafil and rosiglitazone maleate based on the coffee ring effect.

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Development of Effectual Substrates for SERS by Nanostructures-on flexible surfaces

Journal of Physics Conference Series ◽

10.1088/1742-6596/2114/1/012084 ◽

2021 ◽

Vol 2114 (1) ◽

pp. 012084

Author(s):

Hammad R. Humud ◽

Fatimah Jumaah Moaen

Keyword(s):

Raman Scattering ◽

Ag Nanoparticles ◽

Surface Enhanced Raman Scattering ◽

Wave Number ◽

Plasmonic Nanostructures ◽

Sers Substrate ◽

Two Dimensional ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

Abstract The current study examines recent advancements in surface-enhanced Raman scattering (SERS), a technique that employs flexible surfaces as an active substrate, this surfaces consist from two-dimensional thermo-plasmonic grating. With 53 nm Au layer (was deposited on the 2D grating structure of the PDMS by the PVD method). The explosive wire technique was used to preparing Ag nanoparticles that were used for the purpose of SERS. The effect of the plasmonic nanostructures on the absorption spectra and Surface - Enhanced Raman Scattering (SERS) activities was examined. Rhodamine 6G dye was used as a probe molecule. X-Ray diffraction (XRD) was used to examine the structural characteristics of the nanoparticles. The morphology was assessed using Field Emission Scanning Electron Microscopy(FESEM). A twin beam UV-Vis Spectrophotometer was used to measure the absorption of the combined Rh6G dye (concentration 1×10“–6M) with the nanostructures. a Sunshine Raman microscope system and a 50mm objective lens, used for investigating the Raman spectra of the Rh6G combined with nanostructures. The results showed that the enhancement factor (EF) for SERS of R6G (1×M) reached to (2.2×10 3) When using Ag nanoparticles and (0.08 × 103) when R6G deposited directly on the flexible substrates without nanostructures at the wave number (1650 cm−1), we produced a recyclable, homogeneous, and highly sensitive SERS substrate with dependable reproducibility. For the SERS substrate, a surface made up of two-dimensional (2D) flexible grating substrates was chosen to provide multiple modalities in electrical and medicinal applications.

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Improving the surface-enhanced Raman scattering activity of carbon nitride by two-step calcining

RSC Advances ◽

10.1039/c6ra06307a ◽

2016 ◽

Vol 6 (53) ◽

pp. 47368-47372 ◽

Cited By ~ 10

Author(s):

Jizhou Jiang

Keyword(s):

Raman Scattering ◽

Carbon Nitride ◽

Surface Enhanced Raman Scattering ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Ag Substrate

The modified g-C3N4 substrates were prepared by a two-step calcining method. The morphologies and microstructures of modified g-C3N4 were successfully controlled. The modified g-C3N4-2 h + Ag substrate exhibited superior SERS activity.

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Performance Improving Method of Aligned Silver Nanorod by Grafting Au@Ag Core–Shell Nanoparticles for Surface-Enhanced Raman Scattering

NANO ◽

10.1142/s1793292017501314 ◽

2017 ◽

Vol 12 (11) ◽

pp. 1750131 ◽

Cited By ~ 10

Author(s):

Jian Chen ◽

Peitao Dong ◽

Chaoguang Wang ◽

Chenyu Zhang ◽

Junfeng Wang ◽

...

Keyword(s):

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Core Shell ◽

Sers Substrate ◽

Shell Nanoparticles ◽

Simple Method ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Core Shell Nanoparticles

A simple method for improving surface-enhanced Raman scattering (SERS) performance of aligned silver nanorod (Ag NR) array was investigated. This method was to construct a kind of hybrid substrate by grafting Au@Ag core–shell nanoparticles (NPs) into Ag NR array using poly(2-vinylphridine) (P2VPy) as a bridging agent. The hybrid substrate yielded excellent SERS performance as its detection limit improved from 10[Formula: see text] M to 10[Formula: see text] M using trans-1,2-bis(4-pyridyl)ethylene (BPE) as probe molecule, which was increased by two orders of magnitude compared with Ag NR array substrate. The significant improvement of SERS performance of Ag NR arrays was attributed to the addition of Au@Ag core–shell NPs. As a result of surface plasmon resonance generated by the interaction of electromagnetic (EM) (IAEM) filed between NP and NR structures, increasing hotspots were found at the connections of NPs and NRs, the gaps of adjacent rods, and the gaps of two particles consequently. These results were validated by the finite difference time domain (FDTD) calculation. Besides, hybrid substrate shows good performance in stability and reproducibility. The proposed method was simple and robust, which promoted SERS performance of Ag NR array effectively, showing great potential in the application of SERS substrate fabrication and SERS-based bio-chemical sensing.

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Nanocrystalline cellulose as reducing- and stabilizing agent in the synthesis of silver nanoparticles: Application as a surface-enhanced Raman scattering (SERS) substrate

Surfaces and Interfaces ◽

10.1016/j.surfin.2018.06.004 ◽

2018 ◽

Vol 13 ◽

pp. 1-10 ◽

Cited By ~ 15

Author(s):

Segun A. Ogundare ◽

Werner E. van Zyl

Keyword(s):

Silver Nanoparticles ◽

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Nanocrystalline Cellulose ◽

Sers Substrate ◽

Stabilizing Agent ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

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Surface-Enhanced Raman Scattering (SERS) Studies of Disc-on-Pillar (DOP) Arrays: Contrasting Enhancement Factor with Analytical Performance

Applied Spectroscopy ◽

10.1177/0003702819846503 ◽

2019 ◽

Vol 73 (6) ◽

pp. 665-677 ◽

Cited By ~ 1

Author(s):

Raymond A. Velez ◽

Nickolay V. Lavrik ◽

Ivan I. Kravchenko ◽

Michael J. Sepaniak ◽

Marco A. De Jesus

Keyword(s):

Raman Scattering ◽

Enhancement Factor ◽

Surface Enhanced Raman Scattering ◽

Analytical Performance ◽

Interparticle Spacing ◽

Localized Surface Plasmon ◽

Sers Substrate ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

The use of nanomachining methods capable of reproducible construction of nano-arrayed devices have revolutionized the field of plasmonic sensing by the introduction of a diversity of rationally engineered designs. Significant strides have been made to fabricate plasmonic platforms with tailored interparticle gaps to improve their performance for surface-enhanced Raman scattering (SERS) applications. Over time, a dichotomy has emerged in the implementation of SERS for analytical applications, the construction of substrates, optimization of interparticle spacing as a means to optimize electromagnetic field enhancement at the localized surface plasmon level, and the substrate sensitivity over extended areas to achieve quantitative performance. This work assessed the enhancement factor of plasmonic Ag/SiO2/Si disc-on-pillar (DOP) arrays of variable pitch with its analytical performance for quantitative applications. Experimental data were compared with those from finite-difference time-domain (FDTD) simulations used in the optimization of the array dimensions. A self-assembled monolayer (SAM) of benzenethiol rendered highly reproducible signals (RSD ∼4–10%) and SERS substrate enhancement factor (SSEF) values in the orders of 106–108 for all pitches. Spectra corresponding to rhodamine 6G (R6G) and 4-aminobenzoic acid demonstrated the advantages of using the more densely packed DOP arrays with a 160 nm pitch (gap = 40 nm) for quantitation in spite of the strongest SSEF was attained for a pitch of 520 nm corresponding to a 400 nm gap.

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Optimizing gold nanostars as a colloid-based surface-enhanced Raman scattering (SERS) substrate

Journal of Optics ◽

10.1088/2040-8978/17/11/114013 ◽

2015 ◽

Vol 17 (11) ◽

pp. 114013 ◽

Cited By ~ 26

Author(s):

Shuai He ◽

Malvin Wei Cherng Kang ◽

Fahima Jaleel Khan ◽

Eddie Khay Ming Tan ◽

Miguel Arnold Reyes ◽

...

Keyword(s):

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Sers Substrate ◽

Gold Nanostars ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

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Sensing trace arsenate by surface enhanced Raman scattering using a FeOOH doped dendritic Ag nanostructure

Journal of Materials Chemistry A ◽

10.1039/c5ta01427a ◽

2015 ◽

Vol 3 (19) ◽

pp. 10254-10257 ◽

Cited By ~ 18

Author(s):

Mukul Pradhan ◽

Siddhartha Maji ◽

Arun Kumar Sinha ◽

Soumen Dutta ◽

Tarasankar Pal

Keyword(s):

Raman Scattering ◽

Surface Enhanced Raman Scattering ◽

Probe Molecule ◽

Sers Substrate ◽

Arsenic Detection ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

SERS based arsenic detection at ∼10−10 M level with a FeOOH doped (3.5%) uniform dendritic Ag nanostructure. Area mapping shows the uniformity of the SERS substrate taking arsenate as the probe molecule.

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Rapid and Quantitative Determination of S-Adenosyl-L-Methionine in the Fermentation Process by Surface-Enhanced Raman Scattering

Journal of Analytical Methods in Chemistry ◽

10.1155/2016/4910630 ◽

2016 ◽

Vol 2016 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Hairui Ren ◽

Zhaoyang Chen ◽

Xin Zhang ◽

Yongmei Zhao ◽

Zheng Wang ◽

...

Keyword(s):

Raman Scattering ◽

Linear Relationship ◽

Silicon Nanowire ◽

Nanowire Array ◽

Surface Enhanced Raman Scattering ◽

Sers Substrate ◽

Rolling Circle ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

Concentrations of S-Adenosyl-L-Methionine (SAM) in aqueous solution and fermentation liquids were quantitatively determined by surface-enhanced Raman scattering (SERS) and verified by high-pressure liquid chromatography (HPLC). The Ag nanoparticle/silicon nanowire array substrate was fabricated and employed as an active SERS substrate to indirectly measure the SAM concentration. The linear relationship between the integrated intensity of peak centered at ~2920 cm−1in SERS spectra and the SAM concentration was established, and the limit of detections of SAM concentrations was analyzed to be ~0.1 g/L. The concentration of SAM in real solution could be predicted by the linear relationship and verified by the HPLC detection method. The relative deviations (δ) of the predicted SAM concentration are less than 13% and the correlation coefficient is 0.9998. Rolling-Circle Filter was utilized to subtract fluorescence background and the optimal results were obtained when the radius of the analyzing circle is 650 cm−1.

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