Unit:
Department of ChemistryLibrary of the School of Science
Dissertation committee:
ΧΡΙΣΤΙΝΑ-ΑΝΝΑ ΜΗΤΣΟΠΟΥΛΟΥ, Καθηγήτρια ΕΚΠΑ
ΑΘΑΝΑΣΙΟΣ ΦΙΛΙΠΠΟΠΟΥΛΟΣ, Επίκουρος Καθηγητής ΕΚΠΑ
ΝΙΚΟΛΑΟΣ ΤΑΓΜΑΤΑΡΧΗΣ, Διευθυντής Ερευνών ΕΙΕ
ΚΩΝΣΤΑΝΤΙΝΟΣ ΜΕΘΕΝΙΤΗΣ, Αναπληρωτής Καθηγητής ΕΚΠΑ
ΠΑΝΑΓΙΩΤΗΣ ΚΥΡΙΤΣΗΣ, Αναπληρωτής Καθηγητής ΕΚΠΑ
ΠΑΤΡΙΝΑ ΠΑΡΑΣΚΕΥΟΠΟΥΛΟΥ, Επίκουρη Καθηγήτρια ΕΚΠΑ
ΣΤΕΡΓΙΟΣ ΠΙΣΠΑΣ, Διευθυντής Ερευνών ΕΙΕ
Original Title:
Υβριδικά υλικά βασισμένα σε γραφένιο και χαλκογενίδια μετάλλων για ενεργειακές εφαρμογές
Translated title:
Hybrid materials based on graphene and metal chalcogenides for energy applications
Summary:
This current thesis deals with the preparation and characterization of hybrid materials based on graphene and/or metal chalcogenides that possess interesting photophysical and electrochemical properties aiming to energy conversion schemes.
The first part of the thesis involves the preparation and study of hybrid materials that are based on transition metal chalcogenides prepared by employing bottom-up approaches. In this frame, MoS2 nanostructures were prepared and functionalized at the same time with poly(methacrylic acid) by using microwave irradiation. Moreover, donor-acceptor hybrids were prepared between MoS2 and carbon nanodots and were studied as electrocatalysts for hydrogen evolution reaction. Furthermore, MoS2 nanostructures were developed and studied by employing either a sacrificial soft template (CaCO3) or a non-sacrificial hard template (GO) while their electrocatalytic performance towards hydrogen evolution was tested. Moreover, GO was doped with sulfur and was used as template for the in situ growth of MoS2 and WS2 nanostructures that were used as catalysts for electrocatalytic hydrogen production.
At the second part of this thesis we developed hybrid materials based on transition metal chalcogenides that were prepared by employing top-down approaches. In this frame, MoS2 nanosheets were prepared through exfoliation of the bulk and they were further functionalized with lipoic acid for the in situ growth and stabilization of cadmium sulfide nanoparticles for the preparation of photoelectrochemical cells. Finally, a donor acceptor core/shell material was prepared consisting of poly(3-hexylthiophene) nanoparticles and semiconducting quantum dots for the preparation of photoelectrochemical cells.
Main subject category:
Science
Keywords:
graphene, transition metal dichalcogenides, hybrids, electron transfer
Number of references:
272
