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Surfaces, Volume 6, Issue 4

December 2023 - 12 articles

Cover Story: The present work explores the impact of the Co/S molar ratio on the Oxygen Evolution Reaction (OER) kinetics of cobalt sulfide nanostructures, electrodeposited on a Nickel Foam (NF) substrate. It was found that the Co:S ratio profoundly influenced the structure and morphology of CoxSy@NF electrodes, with the optimum performance to be obtained for an equimolar Co:S ratio of 1:1. Structural and morphological analysis disclosed that the optimum CoS@NF electrocatalyst presented a 3D flower-like nanosheet morphology, offering the smallest particle size and the highest electrochemical active area, which are both conducive to improving the OER kinetics (low overpotential value of 0.28 V and a Tafel slope of 95 mV dec⁻¹). View this paper

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Article

3 Citations

3,640 Views

13 Pages

Impact of Carbon Impurities on Air Stability of MOCVD 2D-MoS₂

Amir Ghiami,
Annika Grundmann,
Songyao Tang,
Hleb Fiadziushkin,
Zhaodong Wang,
Stephan Aussen,
Susanne Hoffmann-Eifert,
Michael Heuken,
Holger Kalisch and
Andrei Vescan

Surfaces2023, 6(4), 351-363;https://doi.org/10.3390/surfaces6040025

7 October 2023

Metal–organic chemical vapor deposition (MOCVD) is a key method for scalable synthesis of two-dimensional transition metal dichalcogenide (2D-TMDC) layers. However, it faces several challenges, such as the unintentional co-deposition of carbon...

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Article

4 Citations

3,201 Views

10 Pages

Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Analysis of Latent Fingermarks Using Greenly Synthesized Silver Nanoparticles

Rodrigo M. Barros,
Cínthia C. Bonatto,
Marcelo H. S. Ramada and
Luciano P. Silva

Surfaces2023, 6(4), 341-350;https://doi.org/10.3390/surfaces6040024

6 October 2023

Advances in nanotechnology have contributed to many innovative approaches in the forensic sciences, including the development of new techniques and protocols for latent fingermark detection. Among other nanomaterials, metal-based nanoparticles have b...

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