Catalytic hydrogenation of graphene films

Zheng, Liqiu; Li, Zhongrui; Bourdo, Shawn E.; Watanabe, Fumiya; Ryerson, Charles C.; Biris, Alexandru S.

doi:10.1039/c0cc03821k

Cited by 37 publications

(35 citation statements)

References 16 publications

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“…Even if various studies based on calculations hypothesized that diamane can form when nonsupported 2LG and 3LG are placed in hydrogen cold plasma, to the best of authors' knowledge, there is no report of any experimental evidence of such scenario. Only few experimental studies on the hydrogenation of FLG have been published [19,26,27,28,29]. In particular, no features from diamane were reported in Raman spectra.…”

Section: Introductionmentioning

confidence: 99%

“…Yet, since the first experimental description of hydrogenated 1LG and 2LG [32], only few experimental studies and methods were reported on this topic. Those methods have been mainly focusing on two approaches: gas phase [19,26,27,29,33,34,35,36,37,38,39,40] or liquid phase hydrogenation [41,42,43,44,45,46]. A review on the subject is available in Ref.…”

Section: Introductionmentioning

confidence: 99%

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Low temperature, pressureless sp2 to sp3 transformation of ultrathin, crystalline carbon films

Piazza

Gough

Monthioux

et al. 2019

Carbon

114

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Nanosized and crystalline sp 3-bonded carbon materials were prepared over large surface areas up to ~33x51 m 2 from the exposure of few-layer graphene (FLG) to H radicals produced by the hotfilament process at low temperature (below 325 C) and pressure (50 Torr). Hybrid materials were also obtained from the partial conversion of FLG. sp 3-C related peaks from diamond and/or lonsdaleite and/or hybrids of both were detected in UV and visible Raman spectra. C-H bonding was directly detected by Fourier Transform Infrared (FTIR) microscopy over an area of ~150 m 2 and one single component attributed to sp 3-C-H mode was detected in the C-H stretching band showing that carbon is bonded to one single hydrogen and strongly suggesting that the sp 3-C materials obtained are ultrathin films with basal planes hydrogenated. The experimental results are compared to computational predictions and comprehensively discussed. Those materials constitute new synthetic carbon nanoforms after fullerenes, nanodiamonds, carbon nanotubes and graphene. This opens the door to new research in multiple areas for the development of new potential applications and may have wide scientific impact, including for the understanding of extraterrestrial diamond-related structures and polytype formation mechanism(s).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Low temperature, pressureless sp2 to sp3 transformation of ultrathin, crystalline carbon films

Piazza

Gough

Monthioux

et al. 2019

Carbon

114

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“…No such groups are detected for the silver-modified copper sample. Reportedly, -CH n groups are one type of the most efficient surface energy reductants which could make the surface water repellent, 21,22 directly inducing the hydrophobic behavior, given the proper chemical composition.…”

Section: Resultsmentioning

confidence: 99%

The impact of high humidity on the ice-phobicity of copper-based superhydrophobic surfaces

Zheng

Shafack

Walker

et al. 2017

Nanomaterials and Nanotechnology

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Humidity, as an important meteorological factor, has rarely been taken into account as far as the ice-phobicity research is concerned. For the first time, the ice-phobicity of a silver-modified copper surface with 1-dodecanethiol coating was investigated in an environment with 69% humidity. It turns out that high humidity has no impact on the superhydrophobicity of the surface at the room temperature. However, humidity compromises the water repellency by decreasing the contact angle from 156 + 2 to 116 + 2 when the temperature reaches zero. By further lowering the temperature, the robust ice-phobicity is observed on the superhydrophobically coated surface. In conjunction with the favorable topological configuration and in high humid surroundings, the intrinsic wettability of the superhydrophobic surfaces dramatically delays the freezing process for 120 s.

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“…The efficient hydrogenation of graphene can also be possible by catalytic conversion where catalyst provides a new reduction pathway of graphene through dissociation of graphene molecule [63]. The intercalated Ni nanoparticles inside of the alumina matrix with the flow of H2 at 820°C demonstrated the catalytic hydrogenation of graphene films (Fig.17).…”

Section: Graphene and Graphanementioning

confidence: 99%

Hydrogen Storage for Energy Application

Krishna¹,

Titus²,

Salimian³

et al. 2012

Hydrogen Storage

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Catalytic hydrogenation of graphene films

Abstract: We developed a novel and facile method to hydrogenate graphene by using a conditioning catalyst upstream of the graphene sample to generate atomic hydrogen.

Cited by 37 publications

References 16 publications

Low temperature, pressureless sp2 to sp3 transformation of ultrathin, crystalline carbon films

Low temperature, pressureless sp2 to sp3 transformation of ultrathin, crystalline carbon films

The impact of high humidity on the ice-phobicity of copper-based superhydrophobic surfaces

Hydrogen Storage for Energy Application

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