Chemical and morphological characterizations of CoNi alloy nanoparticles formed by co-evaporation onto highly oriented pyrolytic graphite

Zhang, Gaixia; Sun, Shuhui; Bostetter, Marc; Poulin, S.; Sacher, E.

doi:10.1016/j.jcis.2010.06.065

Cited by 18 publications

(12 citation statements)

References 30 publications

(38 reference statements)

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“…4e), as well as the binding energies of 852.9 eV and 870.1 eV (Fig. 4f), indicating the existence of metallic Co and Ni in zero valent, 31,37,38 which is consistent with the XRD and TEM results of CoNi@SNC. Another two peaks at higher binding energies at Fig.…”

Section: Resultssupporting

confidence: 83%

“…4e, f can be ascribed to metal oxides, possibly due to the partial oxidation of CoNi alloy nanoparticles. 23,38 The remaining peaks of the Co and Ni 2p spectrum at 786.3 eV, 803.1 eV, 859.7 eV Please do not adjust margins Please do not adjust margins and 876.9 eV are deemed as shake-up satellites (denoted as "Sat.") due to plasmon losses and final state effects.…”

Section: Resultsmentioning

confidence: 99%

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Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

et al. 2017

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Section: Resultssupporting

confidence: 83%

Section: Resultsmentioning

confidence: 99%

Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

et al. 2017

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“…S3 ). The positions of the 2p peaks are respectively 852.8 and 870.1 eV for Ni 2p, 778.3 and 793.3 eV for Co 2p, demonstrating Ni and Co in their zero-valent states 33 34 35 . TEM images are shown in Fig.…”

Section: Resultsmentioning

confidence: 97%

NiCo nanoalloy encapsulated in graphene layers for improving hydrogen storage properties of LiAlH4

Jiao

Sun

et al. 2016

Sci Rep

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NiCo nanoalloy (4–6 nm) encapsulated in grapheme layers (NiCo@G) has been prepared by thermolysis of a 3D bimetallic complex CoCo[Ni(EDTA)]2·4H2O and successfully employed as a catalyst to improve the dehydrogenation performances of LiAlH4 by solid ball-milling. NiCo@G presents a superior catalytic effect on the dehydrogenation of LiAlH4. For LiAlH4 doped with 1 wt% NiCo@G (LiAlH4-1 wt% NiCo@G), the onset dehydrogenation temperature of LiAlH4 is as low as 43 °C, which is 109 °C lower than that of pristine LiAlH4. 7.3 wt% of hydrogen can be released from LiAlH4-1 wt% NiCo@G at 150 °C within 60 min. The activation energies of LiAlH4 dehydrogenation are extremely reduced by 1 wt% NiCo@G doping.

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“…As mentioned above, application of HOPG, which is widely used as a support for metallic particles, [19][20][21][22][23][24] could be a good solution for the problem. The main advantage of HOPG is the very small background signals in the O1s region.…”

Section: Introductionmentioning

confidence: 99%

Model Ag/HOPG catalysts: preparation and STM/XPS study

Demidov

Prosvirin

Sorokin

et al. 2011

Catal. Sci. Technol.

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Model catalysts-Ag on highly oriented pyrolytic graphite (Ag/HOPG)-have been studied using scanning tunneling microscopy (STM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and X-ray induced Auger electron spectroscopy (XAES). Two types of catalysts were compared: Ag nanoparticles supported on sputtered and non-sputtered HOPG, and the influence of graphite surface defects on the stabilization of Ag nano-sized particles was discussed. A procedure for the preparation of stable (up to 250 1C under a submillibar oxygen/ ethylene pressure) silver nanoparticles is suggested. The disappearance of Ag particles in STM images after a sample treatment in the ambient conditions is explained in terms of silver penetration into graphite and the loss of conductivity due to adsorption of contaminants.

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Chemical and morphological characterizations of CoNi alloy nanoparticles formed by co-evaporation onto highly oriented pyrolytic graphite

Cited by 18 publications

References 30 publications

Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

Two-dimensional CoNi nanoparticles@S,N-doped carbon composites derived from S,N-containing Co/Ni MOFs for high performance supercapacitors

NiCo nanoalloy encapsulated in graphene layers for improving hydrogen storage properties of LiAlH4

Model Ag/HOPG catalysts: preparation and STM/XPS study

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