Large Scale Solid-state Synthesis of Catalytically Active Fe3O4@M (M = Au, Ag and Au-Ag alloy) Core-shell Nanostructures

Nalluri, Srinivasa Rao; Nagarjuna, Ravikiran; Patra, Dinabandhu; Ganesan, Ramakrishnan; Balaji, G.

doi:10.1038/s41598-019-43116-7

Cited by 29 publications

(25 citation statements)

References 61 publications

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“…Catalytically active Fe 3 O 4 @M (M = Au, Ag and Au-Ag alloy) core–shell nanostructures were fabricated through a solid state synthetic approach by Nalluri et al [ 18 ], and it involved a simple physical grinding of metal precursors over Fe 3 O 4 particles, followed by calcination, which was cost-effective, quantifiable, eco-friendly, and simple when compared with commonly used solution-based methods. The schematic of the synthetic procedure and the morphology of products are shown in Figure 2 .…”

Section: Synthesis Of Core–shell Micro/nanoparticlesmentioning

confidence: 99%

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Synthesis of Core–Shell Micro/Nanoparticles and Their Tribological Application: A Review

Chen

Lin

et al. 2020

Materials

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Owing to the diverse composition, adjustable performance, and synergistic effect among components, core–shell micro/nanoparticles have been widely applied in the field of tribology in recent years. The strong combination with the matrix and the good dispersion of reinforcing fillers in the composites could be achieved through the design of core–shell structural particles based on the reinforcing fillers. In addition, the performance of chemical mechanical polishing could be improved by optimizing the shell material coated on the abrasive surface. The physical and chemical state of the core–shell micro/nanoparticles played important effects on the friction and wear properties of materials. In this paper, the synthesis methods, the tribological applications (acted as solid/liquid lubricant additive, chemical mechanical polishing abrasives and basic units of lubricant matrix), and the functionary mechanisms of core–shell micro/nanoparticles were systematically reviewed, and the future development of core–shell micro/nanoparticles in tribology was also prospected.

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Section: Synthesis Of Core–shell Micro/nanoparticlesmentioning

confidence: 99%

“… Schematic representation to obtain Fe 3 O 4 @M core–shell nanostructures [ 18 ]. Reproduced with permission from [Srinivasa Rao et al], [Nature]; published by [Springer Nature], 2019.…”

Section: Figurementioning

confidence: 99%

Synthesis of Core–Shell Micro/Nanoparticles and Their Tribological Application: A Review

Chen

Lin

et al. 2020

Materials

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“…There are numerous reports which investigated the impact of different MNPs concentration over crystallite size, d‐spacing, and dislocation density using XRD. [ 151,143,152,153 ]…”

Section: In‐depth Probing Of Hybrid Metal–semiconductor Nanocrystalsmentioning

confidence: 99%

“…XPS studies can also provide information about the surface modification of semiconductor and metal nanocrystals surface. [137][138][139][140] Recently, core/shell nanostructures are being widely studied using XPS, [141][142][143] and efforts are being put in order to accurately calculate the shell thickness and chemical properties of these heterostructures along depth. [144,145] XPS can also probe nanorod heterostructures as shown in Figure 7b.…”

Section: Chemical Characterization Of Hybrid Nanostructuresmentioning

confidence: 99%

“…There are numerous reports which investigated the impact of different MNPs concentration over crystallite size, d-spacing, and dislocation density using XRD. [151,143,152,153] Several advanced shaped heterostructures can also be differentiated using XRD. During synthesis process of Au@ CdS-CdS nanoflowers, various intermediate nanostructures are produced that can be distinguished using XRD scans, shown in Figure 8c.…”

Section: Probing Crystal Structure Of Metal-semiconductor Hybridsmentioning

confidence: 99%

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Modified Absorption and Emission Properties Leading to Intriguing Applications in Plasmonic–Excitonic Nanostructures

Kumar

Nisika

Kumar

2020

Advanced Optical Materials

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years, great advances have been made to grow various shaped semiconductor nanocrystals (SNCs) like quantum dots, [7] nanowires, [8] nanorods (NR), [9] and other advanced shaped nanostructures, [10-12] with great precision. However, these semiconductor nanostructures have small extinction cross-sections (even smaller than geometric cross-section), leading to limited absorbance and emission quantum yields. This hinders the progress of semiconductor nanostructures in several areas ranging from clean energy production to various sensing applications. Among many promising solutions, integrating plasmonic nanoparticles (PNPs) with semiconductor nanostructures emerges as the most prominent way to alleviate aforementioned issue. The PNPs have greater extinction cross-section than SNCs (even greater than geometric cross-section), owing to light absorption and scattering by collective and coherent electron oscillations. [13,14] Moreover, these coherent oscillations can couple with electromagnetic wavelengths far greater than particle size, enabling them to guide light to subwavelength scales, thus overcoming diffraction limit. [15] Besides this, proper control over size and shape of plasmonic nanostructures enables engineering of their intrinsic properties to meet the criteria of required application. [16] For instance, by changing the aspect ratio (length to diameter ratio) of nanorods, one can cover wide spectral regions ranging from visible to near-infrared (NIR) regimes. [17] Thus, the integration of plasmonic and semiconductor nanostructures to obtain greater extinction cross-sections and modified properties in these hybrid nanostructures has received great attention from the research community over the past years. The properties of these hybrid nanostructures can be very different from the two nanoconstituents (metal and semiconductor nanostructures), owing to plasmon-exciton interactions. [18-20] Various configurations of metal/semiconductor nanostructures have been synthesized like metallic core/semiconductor shell, [21] semiconductor NR/metal nanoparticles (MNPs), [22] Janus metal/ semiconductor nanostructures, [23] and many others have been reported, [24-26] with varying absorption and emissive properties, targeting high performance applications. The energy transfer between metal-semiconductor nanostructures resulting from integration of PNPs and SNCs Hybrid nanostructures composed of metal and semiconducting nanocrystals have drawn tremendous attention owing to their extraordinary absorption and emission properties. The energy transfer in metal-semiconductor hybrids as a result of synergetic plasmon-exciton interactions leads to numerous applications in the field of solar energy harvesting, photocatalytic reactions, imaging, photonics, sensing, and many more. Various breakthroughs in advanced characterization techniques over the past decade have disclosed several factors affecting the energy transfer processes leading to modified absorption and emission properties in metal-semiconductor hybrids. Herein, various ...

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Synthesis Protocol of Upconversion Nanoparticles

Mukhopadhyay¹,

Kumar²

2022

Upconverting Nanoparticles

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Large Scale Solid-state Synthesis of Catalytically Active Fe3O4@M (M = Au, Ag and Au-Ag alloy) Core-shell Nanostructures

Cited by 29 publications

References 61 publications

Synthesis of Core–Shell Micro/Nanoparticles and Their Tribological Application: A Review

Synthesis of Core–Shell Micro/Nanoparticles and Their Tribological Application: A Review

Modified Absorption and Emission Properties Leading to Intriguing Applications in Plasmonic–Excitonic Nanostructures

Synthesis Protocol of Upconversion Nanoparticles

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