Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Molybdenum Diselenide and Tungsten Diselenide Interfacing Cobalt-Porphyrin for Electrocatalytic Hydrogen Evolution in Alkaline and Acidic Media
Δημιουργός/Συγγραφέας:	Kagkoura, Antonia Stangel, Christina Arenal, Raul [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Ημερομηνία:	2022-12-22
Γλώσσα:	Αγγλικά
ISSN:	2079-4991
DOI:	10.3390/nano13010035
Άλλο:	36615945
Περίληψη:	Easy and effective modification approaches for transition metal dichalcogenides are highly desired in order to make them active toward electrocatalysis. In this manner, we report functionalized molybdenum diselenide (MoSe2) and tungsten diselenide (WSe2) via metal-ligand coordination with pyridine rings for the subsequent covalent grafting of a cobalt-porphyrin. The new hybrid materials were tested towards an electrocatalytic hydrogen evolution reaction in both acidic and alkaline media and showed enhanced activity compared to intact MoSe2 and WSe2. Hybrids exhibited lower overpotential, easier reaction kinetics, higher conductivity, and excellent stability after 10,000 ongoing cycles in acidic and alkaline electrolytes compared to MoSe2 and WSe2. Markedly, MoSe2-based hybrid material showed the best performance and marked a significantly low onset potential of -0.17 V vs RHE for acidic hydrogen evolution reaction. All in all, the ease and fast modification route provides a versatile functionalization procedure, extendable to other transition metal dichalcogenides, and can open new pathways for the realization of functional nanomaterials suitable in electrocatalysis.
Τίτλος πηγής δημοσίευσης:	Nanomaterials (Basel, Switzerland)
Τόμος/Κεφάλαιο:	13
Τεύχος:	1
Θεματική Κατηγορία:	[EL] Χημική μηχανική[EN] Chemical engineering [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Molybdenum diselenide Tungsten diselenide Cobalt-porphyrin Functionalization Hydrogen evolution reaction
EU Grant:	DGA E13-20R EU H2020 “ESTEEM3” Graphene Flagship
EU Grant identifier:	PID2019-104739GB-100/AEI/10.13039/501100011033 823717 881603
Κάτοχος πνευματικών δικαιωμάτων:	© 2022 by the authors. Licensee MDPI, Basel, Switzerland.
Όροι και προϋποθέσεις δικαιωμάτων:	This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.3390/nano13010035
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο