Surface Enhanced Raman Scattering of Defective TiO2 with Gold Au NPs by Green Method

This works strong the embossing as regards riches (Au) nanoparticles (NPs) regarding attenuate TiO2 films. Au (Au-TiO2) patterned flabby film TiO2. The morphology, cleanly structure, issue administration then optical homes concerning the films hold been studied. Gold nanoparticles (Au-NPs) are synthesized along the useful resource on lowering hydrated gold steel ions of touch together along aqueous sow dermis extract. The alternate among the elevation or assignment about Au NPs elevated the reply above the ethanol gas sensors. The organized Au-TiO2 was once tested, of assessment together with allusion TiO2 membranes, such then ethanol sensors at 250-350 ° C at a fuel attention of 50-1000 ppm. In addition, the SERS deep concerning the excised Au/ TiO2 emaciated movie is about iii cases that above the deposited Au/ TiO2 gaunt film. The results proven in imitation of so much aggregation Au-coated TiO2 at 6 s spray epoch gave the beneficial file on 514 at 350 ° C deed useless heat since 1000 ppm fuel concentration.

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Surface enhanced Raman scattering based on Au nanoparticles/layered double hydroxide ultrathin films

Journal of Materials Chemistry C ◽

10.1039/c4tc02714k ◽

2015 ◽

Vol 3 (20) ◽

pp. 5167-5174 ◽

Cited By ~ 14

Author(s):

Rui Tian ◽

Mingwan Li ◽

Haiyan Teng ◽

Heng Luo ◽

Dongpeng Yan ◽

...

Keyword(s):

Electromagnetic Field ◽

Raman Scattering ◽

Ultrathin Films ◽

Au Nanoparticles ◽

Two Dimensional ◽

Au Nps ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Double Hydroxide

Active SERS ultrathin films (UTFs) based on a two-dimensional architecture have been fabricated, and densely immobilized Au NPs leads to an enhanced electromagnetic field and improved SERS effect. These UTFs exhibit versatility and sensitivity in the detection in various analytes.

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Adsorption of p-nitrothiophenol on mesostructured polyoxometalate–silicate–surfactant composites containing Au nanoparticles: study of surface-enhanced Raman scattering activity

RSC Advances ◽

10.1039/c5ra04754d ◽

2015 ◽

Vol 5 (47) ◽

pp. 37323-37329 ◽

Cited By ~ 7

Author(s):

Li-Ping Wang ◽

Shan-Chi Kuo ◽

U-Ser Jeng ◽

Ying-Huang Lai

Keyword(s):

Raman Scattering ◽

Au Nanoparticles ◽

Surface Enhanced Raman Scattering ◽

Detection Sensitivity ◽

Sers Substrate ◽

Au Nps ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

When DMAB-functionalized Au-NPs@EPSS acts as the SERS substrate, the detection sensitivity of p-NTP molecules increases by ∼6 times compared with as-synthesized Au-NPs@EPSS.

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Study on Surface-Enhanced Raman Scattering Substrate Based on Titanium Oxide Nanorods Coated with Gold Nanoparticles

Journal of Nanotechnology ◽

10.1155/2018/9602480 ◽

2018 ◽

Vol 2018 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Xiaodong Wang ◽

Xiulan Cheng ◽

Xufeng Yu ◽

Xueling Quan

Keyword(s):

Gold Nanoparticles ◽

Raman Scattering ◽

Titanium Oxide ◽

Surface Enhanced Raman Scattering ◽

Au Nps ◽

Oxide Nanorods ◽

Relative Standard ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

A 3D surface-enhanced Raman scattering (SERS) substrate based on titanium oxide nanorods (TiOx-NRs) coated with gold nanoparticles (Au-NPs) was fabricated by a simple hydrothermal, no-template process. The nanostructure of TiOx-NRs influenced by the concentrations of hydrochloric (HCl) acid and sodium chloride (NaCl) was studied in detail. The substrate showed the strongest Raman enhancement, when the diameters of Au-NPs were around 40 nm and the gaps of Au-NPs were in the range of 5 nm to 10 nm. The surface electric field of our substrate was examined by finite-different time-domain (FDTD) solutions. Rhodamine 6G (R6G) was chosen as the probe molecule to study the SERS performance of the substrates. The Raman signal of 10−10 M R6G was detected clearly by the substrate with the enhancement factor of 2.64 × 108. All relative standard deviation (RSD) values of the major peaks for R6G were within the scope of 10.4% to 16.7%. The substrate could work efficiently even after immersed in water for one month.

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Bromide-Assisted Anisotropic Growth of Gold Nanoparticles as Substrates for Surface-Enhanced Raman Scattering

Journal of Spectroscopy ◽

10.1155/2016/3164247 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Melissa A. Kerr ◽

Fei Yan

Keyword(s):

Gold Nanoparticles ◽

Raman Scattering ◽

Chemical Properties ◽

Surface Enhanced Raman Scattering ◽

Synthetic Methods ◽

Au Nps ◽

Vis Spectroscopy ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

We report herein a one-step synthesis of gold nanoparticles (Au NPs) of various shapes such as triangles, hexagons, and semispheres, using 5-hydroxyindoleacetic acid (5-HIAA) as the reducing agent in the presence of potassium bromide (KBr). Anisotropic Au NPs have received ever-increasing attention in various areas of research due to their unique physical and chemical properties. Numerous synthetic methods involving either top-down or bottom-up approaches have been developed to synthesize Au NPs with deliberately varied shapes, sizes, and configurations; however, the production of templateless, seedless, and surfactant-free singular-shaped anisotropic Au NPs remains a significant challenge. The concentrations of hydrogen tetrachloroaurate (HAuCl4), 5-HIAA, and KBr, as well as the reaction temperature, were found to influence the resulting product morphology. A detailed characterization of the resulting Au NPs was performed using ultraviolet-visible (UV-Vis) spectroscopy, scanning electron microscopy (SEM), and Raman spectroscopy. The as-prepared Au NPs exhibited excellent surface-enhanced Raman scattering (SERS) properties, which make them very attractive for the development of SERS-based chemical and biological sensors.

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Gold Nanoparticles - An Enhanced DNA Sensing Tools Using Surface Enhance Raman Scattering

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1109.439 ◽

2015 ◽

Vol 1109 ◽

pp. 439-443

Author(s):

Md. Mahfujur Rahman ◽

Md Eaqub Ali ◽

Sharifah Bee Abd Hamid

Keyword(s):

Gold Nanoparticles ◽

Raman Scattering ◽

Dna Hybridization ◽

Atomic Scale ◽

Dna Sensing ◽

Au Nps ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering ◽

Species Authentication

Molecular recognition of specific DNA target is crucial for species authentication, drug discovery, forensic investigation and biodiagnostics. Development of nanoparticles at atomic scale and molecular level offers remarkable biocompatibility in the detection of DNA hybridization. Oligo-functionalized nanoparticles with controlled sizes and shapes have come forward with advantages over the previously documented DNA detection assays. Nanomaterials facilitate signal transduction and synergism in biomolecular interaction, promoting both conventional and newly developed DNA identification platforms. Tailoring of DNA sensing tools with gold nanoparticles (Au NPs) enhances the Surface Enhanced Raman Scattering (SERS) signal, allowing target detection with molecular precision. Here we briefly reviewed the recent AuNPs based SERS-platforms for the specific, sensitive and reliable detection of DNA targets for species authentication in foods and feeds.

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