Preparation of Ag nanoparticles by spark ablation in gas as catalysts for electrocatalytic hydrogen production

Lu, Junda; Guo, Jia; Song, Shihao; Yu, Guangfa; Liu, Hui; Yang, Xiaojing; Lu, Zunming

doi:10.1039/d0ra06682f

Cited by 22 publications

(13 citation statements)

References 39 publications

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“…The nanoparticles are sufficiently large to be expected to have the bulk fcc crystal structure, and the surface plane with the minimum specific surface energy of an fcc crystal is the (111) face. Previous studies synthesizing pure Ag nanoparticles with a spark ablation source also report an fcc structure [ 50 ]. It has been shown, however, that the minimum surface energy of an fcc nanoparticle, which is produced by a compromise between minimizing the total surface area and the specific energy of faces, is a cuboctahedron, which is a mixture of (111) and (100) faces [ 51 ].…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of Silver Nanoparticles Deposited in Facemask Material for Neutralising Viruses

et al. 2022

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Cloth used for facemask material has been coated with silver nanoparticles using an aerosol method that passes pure uncoated nanoparticles through the cloth and deposits them throughout the volume. The particles have been characterized by electron microscopy and have a typical diameter of 4 nm with the atomic structure of pure metallic silver presented as an assortment of single crystals and polycrystals. The particles adhere well to the cloth fibers, and the coating consists of individual nanoparticles at low deposition times, evolving to fully agglomerated assemblies in heavy coatings. The cloth was exposed to Usutu virus and murine norovirus particles in suspension and allowed to dry, following which, the infectious virus particles were rescued by soaking the cloth in culture media. It was found that up to 98% of the virus particles were neutralized by this contact with the silver nanoparticles for optimum deposition conditions. The best performance was obtained with agglomerated films and with polycrystalline nanoparticles. The work indicates that silver nanoparticles embedded in masks can neutralize the majority of virus particles that enter the mask and thus increase the opacity of masks to infectious viruses by up to a factor of 50. In addition, the majority of the virus particles released from the mask after use are non-infectious.

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Section: Discussionmentioning

confidence: 99%

Effectiveness of Silver Nanoparticles Deposited in Facemask Material for Neutralising Viruses

et al. 2022

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“…Thus, pure metallic nanoparticles or nanoparticles with a multielemental composition can be synthesized by this method . Lu et al have used the spark ablation technique to synthesize pure silver nanoparticles, which were deposited directly onto carbon fibers and tested for their HER activity . While this spark ablation method has many advantages, scalability may be a concern for commercial fabrication of electrocatalysts due to long deposition times.…”

Section: Other Vapor-based Processesmentioning

confidence: 99%

“…121 Another emerging nanoparticle synthesis process that could be useful for the development of electrocatalysts is spark ablation. 123,124 During the spark ablation process, electrodes are connected to an electrical circuit. The current in the circuit is oscillated at high frequencies (∼1 MHz), which creates a spark between the electrodes.…”

Section: ■ Other Vapor-based Processesmentioning

confidence: 99%

“…123 Lu et al have used the spark ablation technique to synthesize pure silver nanoparticles, which were deposited directly onto carbon fibers and tested for their HER activity. 124 While this spark ablation method has many advantages, scalability may be a concern for commercial fabrication of electrocatalysts due to long deposition times. For example, Lu et al reported the theoretical production rate of their Ag nanoparticles is around 2.4 mg h −1 , which is too low and hinders its applicability in the desired large scale roll-to-roll catalyst manufacturing process.…”

Section: ■ Other Vapor-based Processesmentioning

confidence: 99%

“…For example, Lu et al reported the theoretical production rate of their Ag nanoparticles is around 2.4 mg h −1 , which is too low and hinders its applicability in the desired large scale roll-to-roll catalyst manufacturing process. 124…”

Section: ■ Other Vapor-based Processesmentioning

confidence: 99%

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Current Status on the Manufacturing of Nanomaterials for Proton Exchange Membrane Energy Systems by Vapor-Based Processes

et al. 2021

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Development of novel technologies for catalyst synthesis and membrane electrode assembly (MEA) fabrication is of primary importance for further improvement of the performance and economics of proton exchange membrane fuel cells (PEMFCs) and proton exchange membrane water electrolyzers (PEMWEs). While the traditional manufacturing methods are time-consuming, energy intensive, and require many processing steps, newer vapor-based methods provide many benefits including the development of improved catalysts and catalyst supports, deposition of uniform thin films, reduction of catalyst loading, and minimizing the number of manufacturing steps. Recent publications in the field identified spray pyrolysis, reactive spray deposition technology, chemical vapor deposition, and atomic layer deposition as advanced vapor-based catalyst synthesis and deposition methods used for fabrication of MEAs for PEMFCs and PEMWEs. The MEAs fabricated via vapor-based processes have shown significant performance improvements in comparison to the state-of-the-art MEAs, which are attributed to better catalyst distribution, improved catalyst supports, and controlled, uniform catalyst layer microstructures. This review provides an overview of the vapor-based synthesis and deposition methods currently being used for the development of PEM-based devices. The advantages and disadvantages of these methods are critically compared and discussed while the outlook for future development is provided.

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Nanosilver‐Based Electrocatalytic Materials

Elseman,

Abdelbasir

2024

Electrocatalytic Materials for Renewable Energy

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Preparation of Ag nanoparticles by spark ablation in gas as catalysts for electrocatalytic hydrogen production

Abstract: Spark ablation in gas (SAG) technology has the characteristics of being green, fast quenching, fast dynamics and specializes in producing metallic nanoparticles with a clean surface, small size, and abundant defects.

Cited by 22 publications

References 39 publications

Effectiveness of Silver Nanoparticles Deposited in Facemask Material for Neutralising Viruses

Effectiveness of Silver Nanoparticles Deposited in Facemask Material for Neutralising Viruses

Current Status on the Manufacturing of Nanomaterials for Proton Exchange Membrane Energy Systems by Vapor-Based Processes

Nanosilver‐Based Electrocatalytic Materials

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