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Surfaces, Volume 2, Issue 4

December 2019 - 3 articles

Cover Story: One of the most pressing needs of the emerging hydrogen economy is the development of sustainable catalysts for the electrochemical production of hydrogen from water. Transition metal chalcogenides, given their large availability and low cost, represent an excellent choice; however, their catalytic performance is still inadequate for practical devices. Here, we demonstrate that nickel can be used to boost the catalytic activity of MoS2 both in alkaline and acid media. By combining different characterization techniques to the study of the electrochemical performances, we deduced that NiSx species help the hydrogen evolution in alkaline conditions by facilitating water dissociation, whereas in acid conditions, nickel dopants (Ni–Mo–S) improve catalytic activity through a combination of structural and electronic effects. View this paper.
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Articles (3)

  • Article
  • Open Access
3 Citations
3,460 Views
14 Pages
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UV Light Driven Selective Oxidation of Cyclohexane in Gaseous Phase Using Mo-Functionalized Zeolites

  • Vincenzo Vaiano and
  • Diana Sannino
Surfaces2019, 2(4), 546-559;https://doi.org/10.3390/surfaces2040040

9 December 2019

Heterogeneous photocatalysis in the gas phase has been applied as a promising technique for organic syntheses in mild conditions. Modified zeolites have been used under UV irradiation as novel photocatalysts. In this study, we preliminarily investiga...

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  • Article
  • Open Access
44 Citations
7,070 Views
15 Pages
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Effect of Ni Doping on the MoS2 Structure and Its Hydrogen Evolution Activity in Acid and Alkaline Electrolytes

  • Dario Mosconi,
  • Paul Till,
  • Laura Calvillo,
  • Tomasz Kosmala,
  • Denis Garoli,
  • Doriana Debellis,
  • Alessandro Martucci,
  • Stefano Agnoli and
  • Gaetano Granozzi
Surfaces2019, 2(4), 531-545;https://doi.org/10.3390/surfaces2040039

3 December 2019

We have investigated three-dimensional (3D) MoS2 nanoarchitectures doped with different amount of Ni to boost the hydrogen evolution reaction (HER) in alkaline environment, where this reaction is normally hindered. As a comparison, the activity in ac...

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  • Article
  • Open Access
3,595 Views
11 Pages
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A Comparative Study of the Electro-Assisted Grafting of Mono- and Bi-Phosphonic Acids on Nitinol

  • Bastien Arrotin,
  • Corentin Libioulle,
  • Tatiana Issakova,
  • Laetitia Mespouille,
  • Philippe Dubois,
  • Joseph Delhalle and
  • Zineb Mekhalif
Surfaces2019, 2(4), 520-530;https://doi.org/10.3390/surfaces2040038

29 September 2019

Over the last few years, Nitinol (NiTi) has become one of the most attractive alloy materials for industrial applications. However, its implementation is still problematic due to its surface nickel content, making it sensitive to pitting corrosion. I...

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