Metal-assisted hydrogen storage on Pt-decorated single-walled carbon nanohorns

Liu, Yun; Brown, Craig M.; Neumann, D. A.; Geohegan, David B.; Puretzky, Alexander A.; Rouleau, Christopher M.; Hu, Hui; Styers-Barnett, David; Краснов, Павел О.; Yakobson, Boris I.

doi:10.1016/j.carbon.2012.06.028

Cited by 69 publications

(40 citation statements)

References 55 publications

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“…Hybrids of metal oxides are obtained by oxidation, network formation or precipitation of precursors such as metal nitrates and acetates. Common reducing agents include NaBH 4 , ethylene glycol, thiourea, sodium citrate, and formic acid …”

Section: Synthesis Strategies Of Nanocarbon Hybridsmentioning

confidence: 99%

Application and Future Challenges of Functional Nanocarbon Hybrids

2014

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Hybridizing nanocarbons, such as carbon nanotubes (CNTs) or graphene, with an active material is a powerful strategy towards designing next-generation functional materials for environmental and sustainable energy applications. While research on nanocomposites, created by dispersing the nanocarbon into polymer or ceramic matrices, began almost immediately after the popularization of CNTs and graphene in 1991 and 2004, respectively, nanocarbon hybrids are a relatively recent addition to the family of composite materials. In contrast to nanocomposites, which typically combine the intrinsic properties of both compounds, nanocarbon hybrids additionally provide access to both a large surface area required for gas/liquid-solid interactions and an extended interface, through which charge and energy transfer processes create synergistic effects that result in unique properties and superior performance. This progress report looks at the history of research on nanocarbons (fullerenes, CNTs and graphene) and their composites and hybrids, presents the origin of synergistic effects, reviews the most intriguing results on nanocarbon hybrid performance in heterogeneous catalysis, electrocatalysis, photocatalysis, batteries, supercapacitors, photovoltaics and sensors, and discusses remaining challenges and future research directions.

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Section: Synthesis Strategies Of Nanocarbon Hybridsmentioning

confidence: 99%

Application and Future Challenges of Functional Nanocarbon Hybrids

2014

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“…Meantime, carbon or carbon hybrid materials are of very high technological importance because of their mechanical, electronic, as well as molecular adsorption and sieving properties22. Many kinds of carbon materials, such as activated carbons, carbon nanofibres and carbon nanotubes have been concluded as potential hydrogen storage materials during these decades2324252627. Graphene with its unique structural, electronic, thermal, and mechanical properties has been identified as a promosing candidate for hydrogen storage, especially doped graphene528.…”

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confidence: 99%

Carbon hybridized halloysite nanotubes for high-performance hydrogen storage capacities

Jin

Yang

et al. 2015

Sci Rep

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Hybrid nanotubes of carbon and halloysite nanotubes (HNTs) with different carbon:HNTs ratio were hydrothermally synthesized from natural halloysite and sucrose. The samples display uniformly cylindrical hollow tubular structure with different morphologies. These hybrid nanotubes were concluded to be promising medium for physisorption-based hydrogen storage. The hydrogen adsorption capacity of pristine HNTs was 0.35% at 2.65 MPa and 298 K, while that of carbon coated HNTs with the pre-set carbon:HNTs ratio of 3:1 (3C-HNTs) was 0.48% under the same condition. This carbon coated method could offer a new pattern for increasing the hydrogen adsorption capacity. It was also possible to enhance the hydrogen adsorption capacity through the spillover mechanism by incorporating palladium (Pd) in the samples of HNTs (Pd-HNTs) and 3C-HNTs (Pd-3C-HNTs and 3C-Pd-HNTs are the samples with different location of Pd nanoparticles). The hydrogen adsorption capacity of the Pd-HNTs was 0.50% at 2.65 MPa and 298 K, while those of Pd-3C-HNTs and 3C-Pd-HNTs were 0.58% and 0.63%, respectively. In particular, for this spillover mechanism of Pd-carbon-HNTs ternary system, the bidirectional transmission of atomic and molecular hydrogen (3C-Pd-HNTs) was concluded to be more effective than the unidirectional transmission (Pd-3C-HNTs) in this work for the first time.

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“…The doping approach has been used for different porous carbons substrates (e.g. [9]), but not extensively for SWCNHs so far, and there are only very few such reports in literature [10][11][12]. In the present work, SWCNHs produced by arc discharge were subjected to thermal oxidation and subsequently decorated with Pd nanoparticles.…”

Section: Introductionmentioning

confidence: 97%