Localized Surface Plasmonic Properties of Au and Ag Nanoparticles for Sensors: a Review

Khurana, Kanika; Jaggi, Neena

doi:10.1007/s11468-021-01381-1

Cited by 99 publications

(80 citation statements)

References 148 publications

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“…When the particle size goes to the nanoscale, its catalytic [ 14 ], optical [ 7 ], thermal [ 15 , 16 ], mechanical [ 17 ], electronic [ 18 ], and magnetic activity [ 19 ] improve significantly. Accordingly, metallic NPs can be used in different areas of application, such as absorption of light spectrum [ 20 ], water purification [ 21 ], antimicrobial activity [ 13 ], biomedicine [ 22 ], sensors [ 23 ], and many others.…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

et al. 2021

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Silver (Ag) nanoparticles (NPs) have been synthesized through an easy, inexpensive, and ecofriendly method. Petroselinum crispum, parsley, leaf extract was utilized as a reducing, capping, and stabilizing agent, without using any hazardous chemical materials, for producing Ag NPs. The biosynthesized Ag NPs were characterized using different characterization techniques, namely UV-Vis, FT-IR spectroscopy, X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), dynamic light scattering (DLS), zeta potential, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), transmission electron microscope (TEM), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray (EDX) analysis to investigate the optical, thermal, structural, morphological, and chemical properties of the plant extract and the biosynthesized Ag NPs. After that, the biosynthesized Ag NPs were utilized in harvesting sunlight for solar thermal generation. Surface plasmon resonance (SPR) for the green synthesized Ag NPs with the dark color were adjusted at nearly 450 nm. Once the Ag NPs are excited at the SPR, a large amount of heat is released, which causes a change in the local refractive index surrounding the Ag NPs. The released heat from the Ag NPs under the solar irradiation at the precise wavelength of plasmon resonance significantly increased the temperature of the aqueous medium. Different percentages of Ag NPs were dispersed in water and then exposed to the sunlight to monitor the temperature of the suspension. It was found that the temperature of the aqueous medium reached its highest point when 0.3 wt. % of Ag NPs was utilized. This investigation is rare and unique, and it shows that utilizing a small amount of the biosynthesized Ag NPs can increase the temperature of the aqueous medium remarkably.

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Section: Introductionmentioning

confidence: 99%

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

et al. 2021

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“…For the past decades, LSPR of metallic nanoparticles and their applications have been studied extensively, and there are many comprehensive review papers [ 13 , 66 , 67 , 68 , 69 , 70 , 71 ]. The LSPR with metastructures offers a strongly confined and enhanced electromagnetic field with the advantages of spectral tunability, which have been widely used in sensing applications [ 72 , 73 , 74 ].…”

Section: Metastructure-based Plasmonic Sensorsmentioning

confidence: 99%

Surface Plasmonic Sensors: Sensing Mechanism and Recent Applications

Duan

Liu

Chang

et al. 2021

Sensors

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Surface plasmonic sensors have been widely used in biology, chemistry, and environment monitoring. These sensors exhibit extraordinary sensitivity based on surface plasmon resonance (SPR) or localized surface plasmon resonance (LSPR) effects, and they have found commercial applications. In this review, we present recent progress in the field of surface plasmonic sensors, mainly in the configurations of planar metastructures and optical-fiber waveguides. In the metastructure platform, the optical sensors based on LSPR, hyperbolic dispersion, Fano resonance, and two-dimensional (2D) materials integration are introduced. The optical-fiber sensors integrated with LSPR/SPR structures and 2D materials are summarized. We also introduce the recent advances in quantum plasmonic sensing beyond the classical shot noise limit. The challenges and opportunities in this field are discussed.

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“…Nanomaterials of noble metal such as Silver (Ag) and gold (Au) nanoparticles are the two most widely used plasmonic nano-markers with various surface modification to detect environment polluting heavy metals from different systems, possessing a high optical absorbance cross-section in UV-Visible region [14,15]. The presence of heavy metal ions in the system led to the self-aggregation or agglomeration of the NPs into different nonspherical geometry and clusters, driven by forces such as van der Waals interaction, ligand coupling, electrostatic attraction and repulsion between the charged particles etc [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Combined Spectroscopic and Theoretical Analysis of Plasmonic Silver Nanoparticles Sensor Towards Detailed Microscopic Understanding of Heavy Metal Detection

Pan

Maji

Banarjee

et al. 2021

Preprint

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Plasmonic nanoparticles are of great importance owing to their highly responsive ‘Localized Surface Plasmon Resonance’ (LSPR) behaviour to self-agglomeration/ aggregation leading to the development of various nanosensors. Herein we demonstrated the definite self-assembly of citrate functionalized silver nanoparticles (AgNPs) into a one-dimensional linear chain in presence of charged lead ions (Pb 2+ ), one of the most toxic heavy metal pollutants. We have explored detail mechanism using a variety of spectroscopic tools and electron microscopy. The self-aggregation of AgNPs leads to the generation of new LSPR modes due to coupling of nearby existing modes. The conclusion of our experimental findings is duly supported by our developed numerical modelling based on the quasi-static approximation that the generated new LSPR modes are solely due to formation of chain-like aggregation of AgNPs. We have also monitored the LSPR spectra in presence of other metal ions, however, only Pb 2+ found to give such unique self-assembled geometry may due to its high interaction affinity with citrate. These findings play a key role for citrate functionalised AgNPs to be used as a low cost highly selective and sensitive lead ion sensor for potential application in industrial lead pollution monitoring. We have further varied several sensor parameters such as AgNPs size, concentration and the allowed reaction time for it to be practically implemented as an efficient lead sensor meeting the Environmental Protection Agency recommendations.

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Localized Surface Plasmonic Properties of Au and Ag Nanoparticles for Sensors: a Review

Cited by 99 publications

References 148 publications

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

Biosynthesis of Silver Nanoparticles and Their Applications in Harvesting Sunlight for Solar Thermal Generation

Surface Plasmonic Sensors: Sensing Mechanism and Recent Applications

A Combined Spectroscopic and Theoretical Analysis of Plasmonic Silver Nanoparticles Sensor Towards Detailed Microscopic Understanding of Heavy Metal Detection

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