Surface modification of polymer microparticles using a hexagonal-barrel sputtering system

Abe, Takayuki; Akamaru, Satoshi; Watanabe, Kuniaki; Honda, Yuji

doi:10.1016/j.jallcom.2005.02.097

Cited by 37 publications

(20 citation statements)

References 6 publications

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“…The details of the polygonal barrel-sputtering method used in this study have been reported in the papers previously [24][25][26][27][28][29][30]. A plate of Pt (99.99% purity, 50 × 100 mm) or Ru (99.99% purity, 50 × 100 mm) was used as a target.…”

Section: Preparation Of Samplesmentioning

confidence: 99%

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CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

Inoue¹,

Nishimura²,

Akamaru³

et al. 2009

Electrochimica Acta

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Section: Preparation Of Samplesmentioning

confidence: 99%

“…The present authors have developed a new surface-modifying dry process named as the "polygonal barrel-sputtering method" [24][25][26][27][28][29][30]. Recently, we reported the preparation of electrocatalysts for PEFCs using this method [29,30].…”

Section: Introductionmentioning

confidence: 99%

CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

Inoue¹,

Nishimura²,

Akamaru³

et al. 2009

Electrochimica Acta

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“…We have recently developed polyhedral-barrel sputtering system that can be used to modify fine particle surfaces with a metal or alloy in a dry process [10][11][12]. Compared with wet processes such as plating, sputtering has the advantages of being less prone to infiltration of impurities, offering a wider range of choices of modification materials, and carrying a lower environmental burden.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Fine Particles with a SnO2 Film by Using a Polyhedral-Barrel Sputtering System

Abe

Higashide

Inoue

et al. 2007

Plasma Chem Plasma Process

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Fine particles were modified with a thin film of SnO 2 by using a barrel sputtering system that is a dry process. The conditions for the preparation of SnO 2 were studied by reactive sputtering onto a glass plate substrate. The optimal conditions for the preparation of tetragonal SnO 2 were identified as 60% partial oxygen pressure and 1.0 Pa total gas pressure with the substrate at room temperature. Under the optimized conditions, the surfaces of Al flake particles were modified with a thin film of SnO 2 . XRD and SEM/EDS analysis of the prepared samples showed that the Al particle surfaces were uniformly modified by a thin film of SnO 2 in all cases. The film thicknesses were 80, 130, and 180 nm at RF outputs of 195, 350, and 490 W. These measured thicknesses coincided with the values estimated from the interference colors of the samples.

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“…Rotating drums have been used to tumble small components during the sputter deposition of corrosion resistant coatings to avoid the need for fixturing [19]. Abe and co-workers have also published details of a drum-based system for RF sputtering of e.g., Pt coatings onto small charges (2g) of silica particles [20,21], and Poelman, et al describe a rotating drum for depositing vanadia-based catalysts for the oxidative dehydrogenation of propane [22]. Schmid has published several papers on the use of angled rotating cups positioned under magnetrons, particularly for coating glass microspheres with refractory metals [23,24].…”

Section: Introductionmentioning

confidence: 99%

A Novel Technique for the Deposition of Bismuth Tungstate onto Titania Nanoparticulates for Enhancing the Visible Light Photocatalytic Activity

et al. 2016

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Abstract:A novel powder handling technique was used to allow the deposition of bismuth tungstate coatings onto commercial titanium dioxide photocatalytic nanoparticles. The coatings were deposited by reactive pulsed DC magnetron sputtering in an argon/oxygen atmosphere. The use of an oscillating bowl with rotary particle propagation, positioned beneath two closed-field planar magnetrons, provided uniform coverage of the titania particle surfaces. The bismuth/tungsten atomic ratio of the coatings was controlled by varying the power applied to each target. The resulting materials were characterized by X-ray diffraction, energy-dispersive X-ray spectroscopy (EDX), Brunauer-Emmett-Teller (BET) surface area measurements, transmission electron microscopy (TEM), and UV-visible diffuse reflectance spectroscopy. Photocatalytic properties under visible light irradiation were assessed using an acetone degradation test. It was found that deposition of bismuth tungstate onto titania nanoparticles resulted in significant increases in visible light photocatalytic activity, compared to uncoated titania. Of the coatings studied, the highest photocatalytic activity was measured for the sample with a Bi/W atomic ratio of 2/1.

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Surface modification of polymer microparticles using a hexagonal-barrel sputtering system

Cited by 37 publications

References 6 publications

CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

CO oxidation on non-alloyed Pt and Ru electrocatalysts prepared by the polygonal barrel-sputtering method

Surface Modification of Fine Particles with a SnO2 Film by Using a Polyhedral-Barrel Sputtering System

A Novel Technique for the Deposition of Bismuth Tungstate onto Titania Nanoparticulates for Enhancing the Visible Light Photocatalytic Activity

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