Synthesis of stable cesium superoxide nanoparticles for gas sensing application by solution-processed spray pyrolysis method

Nemade, K.R.

doi:10.1007/s13204-017-0619-2

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…Liquid gallium has been widely used for higher resolution images of human organs in X-ray scans, in phase change memory devices and in SERS applications [23][24][25]. Cesium is known to be immensely used in gas sensing applications, in optical glass and as catalyst promoter etc [26]. The cesium clock is used in Global Positioning System for quantum measurements to maintain accuracy [27].…”

Section: Liquid Plasmonicsmentioning

confidence: 99%

Plasmonic Effects in Noble Metal-liquid Metal Based Nanoparticles

Bhardwaj¹,

Verma²

2019

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In the era of flexible and foldable devices, liquid metals emerge as a champion because they are being liquid at or near room temperature in addition to having high electrical and thermal conductivities. Plasmonic resonance occurs when conduction band electrons on metal nanoparticle surface collectively oscillates with same frequency as that irradiated light. This plasmonic resonance has attracted great attention because of large electromagnetic field enhancements near metal nanoparticle and the regulating resonance wavelength with change in material, size, shape and surrounding medium of metallic nanoparticle. Incorporation of liquid metal nanoparticles in plasmonics provides unique properties towards sensing (heart rate monitors etc.) which can become wearable. So, developing liquid metal based low-cost and large-scale plasmonic nanostructures may provide more optical efficiencies, fast kinetics, low temperature processing, versatility, easy embedding in structures and stretchy devices. Present work focuses on literature review highlighting the study of optical properties (absorption and scattering efficiencies, LSPR tunability, Figure of Merit (FOM) and Refractive Index Sensitivity (RIS)) of noble metal-liquid metal nanostructures and future scope of the field. Simulations can be performed on the basis of Mie Theory for spherical nanoparticles and by DDA/FDTD method for non-spherical particles or arrays. The results can help to optimize the plasmonic nanostructures of suitable material, size and shape according to the need of application in particular region of EM spectrum.

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Section: Liquid Plasmonicsmentioning

confidence: 99%

Plasmonic Effects in Noble Metal-liquid Metal Based Nanoparticles

Bhardwaj¹,

Verma²

2019

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“…Diverse methods are executed to synthesize metallic nanoparticles, such as chemical, [1] sonochemical, [2] photochemical [3] and spray pyrolysis. [4] Attributed to the ease of use, simple equipment and prudence, the chemical reduction method has been widely applied. Currently, industrial processes for the synthesizing nanoparticles include laser ablation, hydrothermal, colloidal and solvothermal processes that use high pressures, temperatures and toxic chemicals.…”

Section: Introductionmentioning

confidence: 99%

Biofunctionalized silver and gold nanoparticles as potential curative agents

Velammal

Amaladhas

2020

Applied Organom Chemis

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In this study, the bark of an important medicinal plant, Indigofera aspalathoides is utilized as a bioreductant for the synthesis of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs). The formation of nanoparticles was monitored, and the reaction parameters were optimized by UV-Vis spectroscopy. The attachment of biocomponents as stabilizer was proved employing Fourier-transform infrared (FT-IR) studies. Through transmission electron microscopy (TEM), the morphology was found to be predominantly spherical and a mixture of triangle and hexagon in the case of AgNPs and AuNPs, respectively. The crystallite size of AgNPs and AuNPs was affirmed through X-ray diffraction (XRD) studies using Sherrer formula as 22.03 and 47.70 nm, respectively. DPPH method was adopted to analyse the freeradical quenching ability, and the AgNPs, AuNPs and extract showed inhibition of 76%, 89% and 59% at a concentration of 200 μg ml −1 , and the corresponding IC 50 values were 86.49, 55.20 and 149.19 μg ml −1. The binding of nanoparticles to calf-thymus DNA (CT-DNA) was through groove and the high binding constants (8.49 × 10 6 M −1 and 2.34 × 10 7 M −1 for AgNPs and AuNPs) point out the potential of these nanoparticles as curative drugs. The MTT assay showed that AgNPs were 100% toxic, and the low IC 50 value suggests that this can be used in the medicinal field as a safe drug.

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