Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Carbon Dots Strongly Immobilized onto Carbon Nanohorns as Non-Metal Heterostructure with High Electrocatalytic Activity towards Protons Reduction in Hydrogen Evolution Reaction
Δημιουργός/Συγγραφέας:	Kagkoura, Antonia Ojeda-Galván, Hiram Joazet Quintana, Mildred [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Ημερομηνία:	2023-08
Γλώσσα:	Αγγλικά
ISSN:	1613-6810 1613-6829
DOI:	10.1002/smll.202208285
Άλλο:	36866461
Περίληψη:	Highly performing, non-metal inexpensive electrocatalysts for the production of hydrogen via electrochemical water splitting are called for the replacement of current platinum-based ones. In order to speed up the electrocatalytic hydrogen evolution, abundant active sites but also efficient charge transfer is needed. In this context, 0D carbon dots (CDs) with large specific surface area, low cost, high conductivity, and rich functional groups emerge as promising non-metal electrocatalysts. Additionally, the use of conductive substrates provides an effective strategy to boost their electrocatalytic performance. Herein, the unique 3D superstructure of carbon nanohorns (CNHs), as well as without any metal content in their structure, is used to provide a conductive support of high porosity, large specific surface area, and good electrical conductivity, for the in situ growth and immobilization of CDs, via a simple hydrothermal method. The direct contact of CDs with the 3D conductive network of CNHs promotes charge transfer, accelerating hydrogen evolution. The all-carbon non-metal CDs/CNHs nanoensembleshows an onset potential close to the one of Pt/C, low charge transfer resistance, and excellent stability.
Τίτλος πηγής δημοσίευσης:	Small (Weinheim an der Bergstrasse, Germany)
Τόμος/Κεφάλαιο:	19
Τεύχος:	31
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Χημεία[EN] Chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Carbon dots Carbon nanohorns Electrocatalysis Hydrogen evolution reaction
EU Grant identifier:	A1‐S‐8817
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 Wiley-VCH GmbH
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1002/smll.202208285
Σημειώσεις:	CONACYT is thanked through project A1‐S‐8817 and for a postdoctoral fellowship 2022–2023 to H.J.O.‐G.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο