Τίτλος :	Controlled chemical functionalization toward 3D-2D carbon nanohorn-MoS2 heterostructures with enhanced electrocatalytic activity for protons reduction
Δημιουργός/Ομιλητής :	Kagkoura, Antonia Arenal, Raul [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Ιδιότητα ομιλητή:	National Hellenic Research Foundation Theoretical and Physical Chemistry Institute Laboratorio de Microscopias Avanzadas (LMA), Universidad de Zaragoza National Hellenic Research Foundation Theoretical and Physical Chemistry Institute
Εξειδίκευση τύπου :	Οπτική παρουσίαση
Ημερομηνία:	2022
Γλώσσα :	Αγγλικά
Περίληψη :	Development of novel heterostructures provides an efficient way to modify the properties of individual nanomaterials giving them enhanced characteristics. In this manner, effective association of carbon nanohorns (CNHs) owning large specific surface area and electrical conductivity, with MoS2 possessing inherent electrocatalytic activity but missing robust interactions can promote electrocatalytic reduction of protons to molecular hydrogen.[1] In this work, we proceeded with a stepwise approach for the covalent incorporation of functional groups at the conical tips and sidewalls of CNHs, along with the basal plane of MoS2 to realize the 3D-2D CNH-MoS2 heterostructure.[2] 3D-2D CNH-MoS2 showed excellent electrocatalytic activity for hydrogen evolution same to that of commercial Pt/C due to plenty active sites and increased MoS2 loading onto CNHs improving charge transfer in interfacing CNHs. The new heterostructure registered the same onset potential as Pt/C, small Tafel slope, low charge-transfer resistance and excellent stability. We therefore believe that the advanced modification route that led to the new heterostructure can open new pathways for the development of functional nanomaterials
Όνομα εκδήλωσης:	NT22: The 22nd International Conference on the Science and Applications of Nanotubes and Low-Dimensional Materials
Ημ/νία έναρξης εκδήλωσης :	2022-06-19
Ημ/νία λήξης εκδήλωσης :	2022-06-24
Τόπος εκδήλωσης:	Sungkyunkwan University in Suwon, Republic of Korea
Θεματική κατηγορία:	[EL] Νανοτεχνολογία[EN] Nanotechnology [EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Carbon nanohorns Functionalization Heterostructures Hydrogen evolution Molybdenum disulfide
Έχει σχέση με:	10442/18284 https://nt22.skku.edu/
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο