Supervisors info:
Μητσοπούλου Χριστιάνα Καθηγήτρια (Επιβλέπουσα), Πιτσικάλης Μαρίνος Αναπλ. Καθηγητής, Παρασκευοπούλου Πατρίνα Λέκτορας
Summary:
This work was conducted within the MSc thesis in the field of “Catalysis and
its applications”, at the Inorganic Laboratoty of the Chemistry Department of
University of Athens. It covers literature photocatalytic systems for hydrogen
production with homogeneous photocatalysis. In the experimental part our
efforts for hydrogen production by using anionic dithiolene monometallic nickel
complexes as catalysts are being reported. More specifically, the following
systems have been tested for hydrogen production (TBA)+[Ni(dpedt)(mnt)]-/
[Ru(bpy)3]Cl26H2O/MeCN /H2O /L-ascorbicacid,
(TBA)+[Ni(bdt)2]-/[Ru(bpy)3]Cl26H2O/ MeCN/ H2O/L-ascorbicacid,
(TBA)+[Ni(mnt)2]-/[Ru(bpy)3]Cl26H2O/ MeCN/ H2O/
L-ascorbicacid,(TBA)+[Ni(tdt)2]-/[Ru(bpy)3]Cl26H2O/ MeCN/ H2O/ L-ascorbicacid,
(TBA)+ [Ni(dmit)2]- / [Ru(bpy)3]Cl26H2O/ MeCN/ H2O/ L-ascorbic acid.
Furthemore, the optimization of hydrogen production rate and the mechanism of
the (TBA)+[Ni(dpedt)(mnt)]-/ [Ru(bpy)3]Cl26H2O/MeCN /H2O /L-ascorbicacid
system have also been studied. Modification parameters include: catalyst
concentration, photosensitizer concentration, acetonetrail:water ratio, pH,
temperature, solvent (DMF). During this thesis, Uv-Vis and emission
spectroscopy was used for characterization and stability studies of the system.
Keywords:
Nickel complexes, Homogeneous photocatalysis, Hydrogen production, Dithiolenes, Hydrogenases
