Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Surface functionalization of sol-gel grown NiO thin films with palladium nanoparticles for hydrogen sensing
Δημιουργός/Συγγραφέας:	Sta I. Jlassi M. [EL] Κάνδυλα, Μαρία[EN] Kandyla, Maria Hajji M. Koralli P. Krout F. [EL] Κομπίτσας, Μιχάλης[EN] Kompitsas, Michael G. Ezzaouia H.
Εκδότης:	Elsevier Ltd
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISSN:	0360-3199
DOI:	10.1016/j.ijhydene.2015.12.109
Περίληψη:	The surface of sol-gel grown nickel oxide (NiO) thin films is partially covered by palladium nanoparticles via pulsed laser deposition (PLD). The structural and morphological properties of the NiO:Pd films are studied using X-ray Diffraction, Scanning Electron Microscopy (SEM), and Atomic Force Microscopy (AFM). We find that the films crystallize in the cubic NiO structure. AFM images show the palladium nanoparticle size and morphology depend on the pulsed laser deposition time, while the NiO film surface remains granular and smooth. As grown NiO and NiO:Pd compound thin films are tested as hydrogen sensors. The response of NiO and NiO:Pd (for 1 min and 2 min Pd deposition time) thin films to hydrogen is investigated for different operating temperatures and hydrogen concentrations. The addition of palladium nanoparticles on the NiO surface decreases the detection limit, the operating temperature, and the response time of the sensors. A correlation of the nanoparticles concentration with the optimum operating temperature is found, which may lead to hydrogen selectivity in sensor arrays.
Τίτλος πηγής δημοσίευσης:	International Journal of Hydrogen Energy
Τόμος/Κεφάλαιο:	41
Τεύχος:	4
Σελίδες:	3291-3298
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Hydrogen gas sensor Nickel oxide Pd nanoparticles Pulsed laser deposition Sol-gel Thin films
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2015 Hydrogen Energy Publications, LLC.
Σημειώσεις:	General Secretariat for Research and Technology, GSRT: Polynano-Kripis 447963 Financial support of this work by the General Secretariat for Research and Technology , Greece, (project Polynano-Kripis 447963 ) is gratefully acknowledged.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο