Controllable vapor phase fabrication of F:Mn3O4 thin films functionalized with Ag and TiO2
Bigiani, Lorenzo (Università degli studi di Padova. Dipartimento di Scienze Chimiche)
Barreca, Davide (Università degli studi di Padova. Dipartimento di Scienze Chimiche)
Gasparotto, Alberto (Università degli studi di Padova. Dipartimento di Scienze Chimiche)
Sada, Cinzia (Università degli studi di Padova. Dipartimento di Fisica e Astronomia)
Martí-Sánchez, Sara (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Maccato, Chiara (Università degli studi di Padova. Dipartimento di Scienze Chimiche)

Date:	2018
Abstract:	A facile two-step vapor phase synthetic approach is proposed for the fabrication of MnO thin films chemically modified with fluorine, and eventually functionalized with silver or titania. The adopted strategy exploits the initial chemical vapor deposition (CVD) of MnO on Si(100) substrates starting from a diamine diketonate Mn(ii) complex, followed by the controlled radio frequency (RF)-sputtering of silver or titania. Complementary analytical techniques were employed to investigate the crystallinity (X-ray diffraction), chemical composition (X-ray photoelectron spectroscopy, secondary ion mass spectrometry, energy dispersive X-ray spectroscopy), morphology and nano-organization (field emission-scanning electron microscopy, atomic force microscopy, transmission electron microscopy) of both pristine and functionalized manganese oxide thin films. Under the adopted operating conditions, the target Mn(ii) complex acted as a single-source precursor for both Mn and F, leading to the formation of phase-pure hausmannite MnO films characterized by a uniform in-depth fluorine content. In addition, the obtained results gave evidence of the formation of high purity Ag/F:MnO and TiO/F:MnO composites with a close contact between the single constituents. This work outlines an amenable and efficient method for the vapor phase growth of composite MnO-based thin films, which are favorable candidates for diverse technological applications, from photocatalysis to gas sensing.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad ENE2017-85087-C3-3-R Ministerio de Economía y Competitividad SEV-2013-0295
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Published in:	CrystEngComm, Vol. 20, Issue 22 (June 2018) , p. 3016-3024, ISSN 1466-8033

DOI: 10.1039/c8ce00387d

Preprint 9 p, 1.4 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles