Fabrication of electrochemically stable fluorinated nano-carbon film compared with other fluorinated carbon materials

Ueda, Akio; Kato, Dai; Sekioka, Naoyuki; Kamata, Toshihide; Kurita, Ryoji; Uetsuka, Hiroshi; Hattori, Yoshiyuki; Hirono, Shigeru; Umemura, Shigeru; Niwa, Osamu

doi:10.1016/j.carbon.2009.03.041

Cited by 51 publications

(41 citation statements)

References 44 publications

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“…In this energy region, a binding energy shift occurs by the fluorine atom screening effect near the observed carbon atoms. As reported in previous studies, the peaks at 294.0 eV, 292.0 eV, 239.8 eV, and 286–288 eV represent – C F 3 , – C F 2 -, C -F, and C -CF n carbon crosslinked bonding, respectively 22,25,26,29 . Figure 3(b) shows the fluorine–carbon bond ratios (abbreviated F/C ratios) and F atomic concentrations calculated by the decomposition of the XPS C 1 s peaks according to the carbon concentrations in the targets.…”

Section: Resultssupporting

confidence: 71%

Effects of carbon concentration on high-hardness plasma-polymer-fluorocarbon film deposited by mid-range frequency sputtering

Kim

et al. 2019

Sci Rep

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We propose a method for fabricating high-hardness plasma-polymer-fluorocarbon (PPFC) thin films with controllable optical and surface properties via manipulation of the target composition design and sputtering power density. The carbon/polytetrafluoroethylene (PTFE) composite polymeric material targets with the low electrical resistance were prepared by press-molding using a mechanically mixed powder of PTFE, carbon nanotubes, and graphite. The composite targets showed electrical sheet resistances of 0.1–100 Ω/sq. PPFC thin films were deposited by mid-range frequency (MF) sputtering at power densities within 0.62~4.92 W/cm 2 . The maximum surface hardness of the PPFC thin film was 4.75 GPa, which was 21.6 times higher than that of fluorocarbon thin film sputtered from PTFE under the same conditions. With the increase of the carbon concentration in the target, the carbon cross-linking density of the PPFC thin film increased but the fluorine concentration decreased. The concentration of fluorine in the PPFC thin films grew with increasing sputtering power density. The MF sputtered carbon-rich PPFC thin films are controllable with physical properties of optical transmittance, surface hardness and surface water repellency which could be applied as protective layers for transparent flexible devices.

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Section: Resultssupporting

confidence: 71%

Effects of carbon concentration on high-hardness plasma-polymer-fluorocarbon film deposited by mid-range frequency sputtering

Kim

et al. 2019

Sci Rep

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“…We have previously demonstrated that the nanocarbon film electrode exhibited a smaller oxidation response for Fe 2+ than that at the GC electrode. This was because the surface amounts of oxygen functional groups influenced the electrochemical activity against the Fe 2+ ions as previously reported 15b. In fact the O/C ratios estimated from X‐ray photoelectron spectroscopy were 0.01 for the nanocarbon film and 0.08–0.09 for the GC surface 15.…”

Section: Resultssupporting

confidence: 66%

Einsatz eines Ultraschall‐Durchflussmessgerätes zur Regelung des Volumenstroms in der Hochgradienten‐Magnetseparation

Shaikh

Schussmann

Lieblang

et al. 2015

Chemie Ingenieur Technik

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Bei der Verwendung der Hochgradienten‐Magnetseparation (HGMS) in der Bioverfahrenstechnik werden meist Schlauchpumpen zur Förderung eingesetzt. Bei konstanter Drehzahl der Pumpe fällt allerdings der Volumenstrom durch den HGMS‐Filter mit der Zeit ab, weil mit zunehmender Filterbeladung der freie Strömungsquerschnitt immer weiter eingeengt wird. Daraus resultiert, dass die Beladung des HGMS‐Filters zeitlich nicht konstant erfolgt. In der vorliegenden Untersuchung wurde der Einsatz eines Ultraschall‐Durchflussmessgeräts für die dynamische Anpassung der Pumpendrehzahl zur Konstanthaltung des Volumenstroms während der Magnetseparation erprobt.

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“…A study by Uedo et al based on similar application of corrosion resistance coatings showed that CF4 plasma treatment has a high fluorine content (F/C:0.20) providing a surface with very low surface roughness of 0.075 nm and a water contact angle of 93°. [22].…”

Section: Methodsmentioning

confidence: 99%

Wetting and superhydrophobic properties of PECVD grown hydrocarbon and fluorinated-hydrocarbon coatings

Sarkar

Farzaneh

Paynter

2010

Applied Surface Science

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Wetting characteristics of micro-nanorough substrates of aluminum and smooth silicon substrates have been studied and compared by depositing hydrocarbon and fluorinatedhydrocarbon coatings via plasma enhanced chemical vapor deposition (PECVD) technique using a mixture of Ar, CH4 and C2F6 gases. The water contact angles on the hydrocarbon and fluorinated-hydrocarbon coatings deposited on silicon substrates were found to be 72° and 105°, respectively. However, the micro-nanorough aluminum substrates demonstrated superhydrophobic properties upon coatings with fluorinatedhydrocarbon providing a water contact angle of ∼165° and contact angle hysteresis below 2° with water drops rolling off from those surfaces while the same substrates showed contact angle of 135° with water drops sticking on those surfaces. The superhydrophobic properties is due to the high fluorine content in the fluorinatedhydrocarbon coatings of ∼36 at.%, as investigated by X-ray photoelectron spectroscopy (XPS), by lowering the surface energy of the micro-nanorough aluminum substrates. PACS 68.37.−d, 68.37.Ps, 68.08.Bc

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Fabrication of electrochemically stable fluorinated nano-carbon film compared with other fluorinated carbon materials

Cited by 51 publications

References 44 publications

Effects of carbon concentration on high-hardness plasma-polymer-fluorocarbon film deposited by mid-range frequency sputtering

Effects of carbon concentration on high-hardness plasma-polymer-fluorocarbon film deposited by mid-range frequency sputtering

Einsatz eines Ultraschall‐Durchflussmessgerätes zur Regelung des Volumenstroms in der Hochgradienten‐Magnetseparation

Wetting and superhydrophobic properties of PECVD grown hydrocarbon and fluorinated-hydrocarbon coatings

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