Colloids science-a toolbox for processing nanodielectrics

Samuel, Jorice G. C.

doi:10.1109/mei.2013.6648749

Cited by 5 publications

(3 citation statements)

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“…The interaction between the static repulsion and van der Waals attraction in a system of nanometals with the same charge is illustrated in the diagram in Figure 16d, [ 172 ] indicating that the agglomeration kinetics are largely dependent on the distance between neighboring particles. Generally, the van der Waals attraction functions when the particles are close, while the static repulsion dominates when the particles are relatively separated.…”

Section: Nanosize Effectmentioning

confidence: 99%

Nanometal Thermocatalysts: Transformations, Deactivation, and Mitigation

Zhang

Pan

Zhou

et al. 2021

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Nanometals have been proven to be efficient thermocatalysts in the last decades. Their enhanced catalytic activity and tunable functionalities make them intriguing candidates for a wide range of catalytic applications, such as gaseous reactions and compound synthesis/decomposition. On the other hand, the enhanced specific surface energy and reactivity of nanometals can lead to configuration transformation and thus catalytic deactivation during the synthesis and catalysis, which largely undermines the activity and service time, thereby calling for urgent research effort to understand the deactivating mechanisms and develop efficient mitigating methods. Herein, the recent progress in understanding the configuration transformation‐induced catalytic deactivation within nanometals is reviewed. The major pathways of configuration transformations, and their kinetics controlled by the environmental factors are presented. The approaches toward mitigating the transformation‐induced deactivation are also presented. Finally, a perspective on the future academic approaches toward in‐depth understanding of the kinetics of the deactivation of nanometals is proposed.

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Section: Nanosize Effectmentioning

confidence: 99%

Nanometal Thermocatalysts: Transformations, Deactivation, and Mitigation

Zhang

Pan

Zhou

et al. 2021

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“…A stable nanofluid is one in which there is a balance between the two forces. DLVO theory best explains the stability of nanofluids [93]. At very low and high particle concentration, the Van der Waals forces predominate.…”

Section: Liquid Nanodielectricsmentioning

confidence: 99%

“… Stability of nanofluids (a) Uniform dispersion, (b) Agglomeration, (c) Van der Waals attractive force and electrostatic repulsive force in DLVO theory [93]…”

Section: Liquid Nanodielectricsmentioning

confidence: 99%

Review on natural ester and nanofluids as an environmental friendly alternative to transformer mineral oil

Jacob

Preetha

Sindhu

2020

IET Nanodielectrics

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The development of reliable, environmentally safe and economic insulating oil for the transformer is an endless effort of the electrical industry. Recent research is based on natural ester fluid, the green insulating oil which exhibits excellent dielectric performance and environment friendly characteristics. Nanofluids are also emerging as potential replacement for the conventional mineral oil used in transformers. Characterisation of nanoparticle filled mineral oil and natural esters have validated their improved dielectric behaviour in comparison to the unfilled oil. Although the applications are wide, the state of the art technology requires a deeper understanding of the underlying phenomenon. Much work is expected to be done in the application of nanofluids prepared with mineral oil and natural ester, particularly its effect on the cellulose insulation. The study provides an overview of the different materials that have been used as alternatives to the conventional transformer mineral oil, with special emphasis on natural esters and natural ester nanofluids, their advantages and challenges.

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