Seedless one-spot synthesis of 3D and 2D Ag nanoflowers for multiple phase SERS-based molecule detection

Tian, Yiran; Liu, Hongmei; Chen, Ying; Zhou, Canliang; Jiang, Yong; Gu, Chenjie; Jiang, Tao; Zhou, Jun

doi:10.1016/j.snb.2019.127142

Cited by 43 publications

(13 citation statements)

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“…Furthermore, the enhancement factor (EF) was evaluated for the Ag@CDs-TiO 2 substrate, exhibiting a value of about 2.6 Â 10 6 , which is better or comparable with some typical Ag-based SERS substrates, indicating a high sensitivity of this substrate. [37][38][39][40] (EF calculation details are provided in the ESI. †) The unique SERS effect of Ag@CDs-TiO 2 hybrid NFs might be due to the superior CT effect between TiO 2 , CDs and Ag NPs, the enhanced LSPR effect induced EM by Ag NPs and a homogeneous high density of "hot spots" caused by the uniform Ag@CDs-TiO 2 hybrid NFs.…”

Section: Resultsmentioning

confidence: 99%

Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

et al. 2020

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“…self-assembly [144] Nanochannels Silicon (Si) and glass [210], polyethylene terephthalate (PET) and polydimethylsiloxane (PDMS) [211,212] Chemical etching [211], nanoreplica molding [162], photolithography [210,212], soft lithography [212], microflow patterning [212] 3D Complex 3D structures Gold (Au) [213], Silver (Ag) [214], Platinum (Pt), [213], metal oxides: zinc oxide (ZnO), copper (Cu) and copper oxide (CuO), titanium(IV) oxide (TiO 2 ) [215][216][217], Carbon fiber(CF) [216], reduced GO (rGO) [216,218], cobalt phosphate (Co 2 (PO 2 ) 2 ) [219,220], polydimethylsiloxane (PDMS) [221,222] Sputtering [215], electrodeposition [216], nanoparticle nucleation [219], hydrothermal synthesis [161], seedless one-spot synthesis [214], self-assembly [216] electrochemical activation [216], soft lithography [221,222] The functionalization of NPs onto a sensor platform is commonly employed in LSPR biosensors, as well as in SERS biosensors, to increase target-binding capacity. [39,53,172,[263][264][265] Nanolattices are a common type of nanoarray structure, which is formed when the NPs are arranged in an ordered array which enables them to scatter light and produce diffracted waves.…”

Section: Nanoparticlesmentioning

confidence: 99%

Advances in Biosensors and Diagnostic Technologies Using Nanostructures and Nanomaterials

Welch

Powell

Clevinger

et al. 2021

Adv Funct Materials

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Nanoscale materials have unique properties that make them especially useful for biomedical diagnostic applications. Recent developments in nanoengineering have resulted in increasing use of nanostructures in biosensors. Various types of 0D, 1D, 2D, and 3D nanostructures have been used to improve biosensor sensitivity, selectivity, limit of detection, and time to result, among other metrics. These nanostructures have been integrated into electrochemical, optical, and other biosensors for this purpose. Here, the most recent advances in the use of nanostructured materials in biosensors are described. This includes a discussion of nanoparticles, nanorods, nanofibers, nanopillars, nanowires, nanosheets, indented nanopatterns (nanoholes and nanoslits), nanogaps, nanochannels, nanopores, nanofunctionalized surfaces, and complex hierarchical structures and their unique advantages and applications in biosensors. Clinical applications of these nanobiosensors are also highlighted along with a discussion of the future directions for these materials in diagnostics.

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“…[ 7 ] In recent year, for the purpose of pursuing excellent SERS performance, much effort has been devoted to develop novel SERS substrates to promote the EM and CM effect. [ 8–14 ]…”

Section: Introductionmentioning

confidence: 99%

“…Previously, noble‐metal materials like gold (Au) or silver (Ag) are the most studied candidates for SERS applications, nanostructures and nanoparticles prepared by noble‐metal are extensively reported in the literature. [ 11,15,16 ] For example, an Ag nanoparticles/Au nanowires substrate on PDMS was prepared by seed‐mediated growth and magnetron sputtering coating. [ 17 ] Ascribed to the significantly enhanced EM by Ag‐Au SPR mode coupling, it showed attractive SERS capability for ultra‐low pesticide residues detection.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of noble metal decorated carbon nanostructure for SERS detection

Lai

Chen³

et al. 2021

J Raman Spectroscopy

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Surface enhanced Raman scattering (SERS) is a highly sensitive spectral analysis technique for ultra‐low trace molecule detection. Conventionally, noble metals like silver (Ag) and gold (Au) are used to prepare the SERS substrates; however, it usually requires careful experiment design and accurate process control, which defers their wide applications in practice. In this paper, a one‐step and low‐cost approach to prepare silver decorated porous carbon (Ag NPs/PCN) films for SERS application is reported. Experimentally, gelatin‐silver nitrate mixed solution was first spin‐coated on the Si substrates to form the thin films, and then, the substrates were carbonized at the different temperatures to obtain the Ag NPs/PCN films. The SERS performance of the Ag NPs/PCN films was evaluated by using the R6G as Raman reporter. Results reveal that the SERS activity is closely related to the spin‐coating rate and carbonization temperature. And detection limit of 10−8 M with the Raman enhancement factor of 1.64 × 106 (10−4‐M R6G) can be obtained on the most optimal substrate. Moreover, large‐scale mapping measurement further evidences that excellent Raman signal uniformity with the RSD of 6.93% also can be achieved.

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Seedless one-spot synthesis of 3D and 2D Ag nanoflowers for multiple phase SERS-based molecule detection

Cited by 43 publications

References 50 publications

Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

Advances in Biosensors and Diagnostic Technologies Using Nanostructures and Nanomaterials

Facile synthesis of noble metal decorated carbon nanostructure for SERS detection

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Seedless one-spot synthesis of 3D and 2D Ag nanoflowers for multiple phase SERS-based molecule detection

Cited by 43 publications

References 50 publications

Highly efficient core–shell Ag@carbon dot modified TiO2 nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

Highly efficient core–shell Ag@carbon dot modified TiO2 nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

Advances in Biosensors and Diagnostic Technologies Using Nanostructures and Nanomaterials

Facile synthesis of noble metal decorated carbon nanostructure for SERS detection

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Product

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Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring

Highly efficient core–shell Ag@carbon dot modified TiO₂ nanofibers for photocatalytic degradation of organic pollutants and their SERS monitoring