000195253 001__ 195253
000195253 005__ 20190604054705.0
000195253 0247_ $$2doi$$a10.1016/j.jphotochem.2013.02.005
000195253 02470 $$2ISI$$a000316979000008
000195253 037__ $$aARTICLE
000195253 245__ $$aTiON and TiON-Ag sputtered surfaces leading to bacterial inactivation under indoor actinic light
000195253 269__ $$a2013
000195253 260__ $$c2013
000195253 336__ $$aJournal Articles
000195253 520__ $$aThis study reports the details Escherichia coli inactivation kinetics on TiON and TiON-Ag films sputtered on polyester by direct current reactive magnetron sputtering (DC) and pulsed magnetron sputtering (DCP) in an Ar/N2 /O2 atmosphere. The use of TiON leads to bacterial inactivation avoiding leaching of Ag. The surface of TiON and TiON-Ag was characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), electron microscopy (EM), X-ray fluorescence (XRF) and contact angle (CA) measurements. Evidence for the photocatalyst self-cleaning after the bacterial inactivation was shown by XPS, contact angle (CA) and the Zetasizer zeta-potential of the proteins. The photo-induced charge transfer from Ag2 O and TiO2 is discussed considering the relative positions of the electronic bands of the two oxides. An interfacial charge transfer mechanism (IFCT) for the photo-induced electron injection is suggested. The most suitable TiON coating sputtered on polyester was 70 nm thick and inactivated E. coli within	120 min	under	low	intensity	visible/actinic	light	(400–700 nm,	4 mW/cm2 ).	TiON-Ag	sputtered catalysts shortened E. coli inactivation to ∼55 min, since Ag accelerated bacterial inactivation due to its disinfecting properties. Evidence is presented for the repetitive performance within short times of the TiON and TiON-Ag polyester under low intensity visible light.
000195253 6531_ $$aDC-sputtering
000195253 6531_ $$aTiON films
000195253 6531_ $$aTiON-Ag films
000195253 6531_ $$aInterfacial charge transfer
000195253 6531_ $$aE. coli
000195253 700__ $$0247403$$g216848$$aRtimi, Sami
000195253 700__ $$aBaghriche, Oualid
000195253 700__ $$0244830$$g106344$$aSanjines, Rosendo
000195253 700__ $$0240005$$g106159$$aPulgarin, César
000195253 700__ $$aBensimon, Michaël$$0240395$$g104497
000195253 700__ $$0240006$$g105552$$aKiwi, John
000195253 773__ $$j256$$tJournal of Photochemistry and Photobiology A: Chemistry$$q52-63
000195253 8564_ $$uhttps://infoscience.epfl.ch/record/195253/files/TiON.pdf$$zn/a$$s1385073$$yn/a
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000195253 937__ $$aEPFL-ARTICLE-195253
000195253 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000195253 980__ $$aARTICLE