Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

Mohapatra, Sudip; Siddhanta, Soumik; Kumar, Deepak; Narayana, Chandrabhas; Maji, Tapas Kumar

doi:10.1002/ejic.201000540

Cited by 13 publications

(2 citation statements)

References 43 publications

(42 reference statements)

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“…Both Ag and Au are good Raman-active materials for SERS sensors; however, the bio-inspired Ag-NG had a structure that stood vertically and had a large aspect ratio, similar to a nanorod. It is well known that Ag nanorods are good SERS-active nanomaterials owing to their structure [ 36 , 37 , 38 ]; hence, the Ag-NG showed good SERS activity in comparison with the flat Au substrate in the simulation results.…”

Section: Resultsmentioning

confidence: 98%

Detection of Chlorpyrifos Using Bio-Inspired Silver Nanograss

Park

Lee

et al. 2022

Materials

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Chlorpyrifos (CPF) is widely used as an organophosphorus insecticide; however, owing to developmental neurotoxicity, genotoxicity, and other adverse effects, it is harmful not only to livestock but also to humans. Therefore, the use of CPF was recently regulated, and its sensitive detection is crucial, as it causes serious toxicity, even in the case of residual pesticides. Because it is hard to detect the chlorpyrifos directly using spectroscopy (especially in SERS) without chemical reagents, we aimed to develop a SERS platform that could detect the chlorpyrifos directly in the water. In this study, we utilized the intrinsic properties of natural lawns that grow randomly and intertwine with each other to have a large surface area to promote photosynthesis. To detect CPF sensitively, we facilitated the rapid fabrication of biomimetic Ag nanograss (Ag-NG) as a surface-enhanced Raman spectroscopy (SERS) substrate using the electrochemical over-deposition method. The efficiency of the SERS method was confirmed through experiments and finite element method (FEM)-based electromagnetic simulations. In addition, the sensitive detection of CPF was enhanced by pretreatment optimization of the application of the SERS technique (limit of detection: 500 nM). The Ag-NG has potential as a SERS platform that could precisely detect organic compounds, as well as various toxic substances.

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Section: Resultsmentioning

confidence: 98%

Detection of Chlorpyrifos Using Bio-Inspired Silver Nanograss

Park

Lee

et al. 2022

Materials

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“…[14] Currently, many methods, including Hydrothermal method, [15]Liquid phase reduction method, [16] Template method [17] and Nano lithography, [18] have been applied to the fabrication of SERS-active substrates with particular size, shape and so on. In all of the SERS substrates, silver nanostructures shows excellent SERS performance, and various silver nanostructures, such as nanowires, [19] nanorods, [20] nanocubes, [21] and dendritic nanostructures [22] have been used as SERS substrates. Many studies have showed that the controllability, stability, repeatability and uniformity of the substrates play a vital role in SERS detection.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of flower-like silver nanostructures for rapid detection of caffeine using surface enhanced Raman spectroscopy

Zheng

et al. 2016

Sensors and Actuators B: Chemical

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Flower-like silver nanoparticles, with diameters of 450~500 nm and protrusions on the surface up to 10~15 nm, have been successfully synthesized via liquid phase reduction method, by using ascorbic acid as a reductant and polyvinyl pyrrolidone (PVP) as a surfactant. It is found that the proper coating degree of PVP on silver nuclei leads to anisotropic growth of the silver nuclei resulting to the formation of flower-like structure with more protrusions. Furthermore, when the obtained flower-like silver nanostructure is used as Surface Enhanced Raman Scattering(SERS) substrates, SERS signal is still clearly even if the concentration of R6G solution is reduced down to 10-8 M. The SERS enhancement mechanism of flower-like silver nanostructures in SERS spectroscopy has been further discussed. SERS technology based on the obtained flower-like silver nanostructure substrates can be also used as an effective way to detect caffeine. In this work, it is found that the average intensity of SERS signals at 807 cm-1 (N-C-H), 958 cm-1 (Pyrimidine ring) and 1327 cm-1 (Imidazole trigonal ring) linear decreased with the-log 10 C (C is the concentration of caffeine), and the coefficient of determination (R 2) is as high as 0.975. This work provides a new way for the quantitative detection of caffeine based on SERS spectroscopy.

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Surface-enhanced Raman Scattering (SERS) in Bioscience: A Review of Application

Bukowska

Piotrowski

2013

Challenges and Advances in Computational Chemistry and Physics

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Facile and Green Synthesis of SERS Active and Ferromagnetic Silver Nanorods

Cited by 13 publications

References 43 publications

Detection of Chlorpyrifos Using Bio-Inspired Silver Nanograss

Detection of Chlorpyrifos Using Bio-Inspired Silver Nanograss

Fabrication of flower-like silver nanostructures for rapid detection of caffeine using surface enhanced Raman spectroscopy

Surface-enhanced Raman Scattering (SERS) in Bioscience: A Review of Application

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