XPS and FTIR Studies of DC Reactive Magnetron Sputtered TiO2 Thin Films on Natural Based-Cellulose Fibers

Abstract

Natural based-cellulosic fibers are trending due to the global awareness regarding environmental health and because their properties make them a great alternative to the synthetic fibers. However, these fibers also have some hindrances that can be solved with their functionalization. The present study concerns modification of the surface of natural based-cellulosic fibers extracted from stems of the ginger lily plant (Hedychium gardnerianum) with TiO2 films deposited by DC magnetron sputtering using a titanium (Ti) target. A detailed characterization of the TiO2-coated fibers was investigated by Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). The results revealed that the sputtered TiO2 films can be attached to the ginger lily fibers mainly by their OH groups. XPS analysis further shows that C–OH group is not dominant, which means that no pure cellulose is present at the surface.

F– Serve as Surface Trapping Sites to Promote the Charge Separation and Transfer of TiO2

“…This can be further verified by the enhanced vibration peak at 1632 cm –1 for TO-0.1F, TO-0.4F, and TO-1.6F, which is an indicator of the O–H bending mode of water. 57 The FTIR results are well in accordance with our XPS result, further highlighting the role of F – in affecting the surface OH groups of TiO 2 . The adsorption of water by TiO 2 may be due to the presence of OH groups, or the stronger electron-acceptor centers, that is, the presence of coordinated unsaturated Ti 4+ sites.…”

“…Most importantly, compared with pure TO, the peak at 3350 cm –1 (O–H stretching) for TO- x F is markedly strengthened and, in particular, the peak intensities of TO-0.1F and TO-1.6F are stronger, indicating that surface-modified F – could affect the concentration of the surface-adsorbed OH groups. This can be further verified by the enhanced vibration peak at 1632 cm –1 for TO-0.1F, TO-0.4F, and TO-1.6F, which is an indicator of the O–H bending mode of water . The FTIR results are well in accordance with our XPS result, further highlighting the role of F – in affecting the surface OH groups of TiO 2 .…”

An Active Bio-Based Food Packaging Material of ZnO@Plant Polyphenols/Cellulose/Polyvinyl Alcohol: DESIGN, Characterization and Application

“…To the O1s spectrum of Figure 3 c, three peaks at the binding energies of 531.0, 532.3 and 533.1 eV were also obtained after fitting. The first one is attributed to the lattice oxygen of ZnO, and the last two correspond to C−O−H and C−O−C bonds originating from cellulose, PPL and PVA [ 16 , 48 , 49 , 50 , 51 ]. The Zn2p spectrum showed a typical doublet peak at 1021.9 and 1045.0 eV, which were Zn2p 3/2 and Zn2p 1/2 of divalent Zn element, respectively.…”

Synergistic effect of adsorption and photocatalysis for the degradation of toluene by TiO2 loaded on ACF modified by Zn(CH3COO)2

“…The characteristic stretching vibration peak at 700~500 cm -1 is observed thanks to the uctuation of Ti-O-Ti bond (Wang et al 2011). The peak of ACF at 1084 cm -1 is C-O stretching vibration peak, and there is a characteristic absorption peak in each composites, which can be put down to the combination of TiO 2 and C-O bond to form Ti-O-C stretching vibration peak (Eleutério et al 2020). In TiO 2 /ACF-Ac composites, the characteristic peaks of 1687~1512 cm -1 and 1468~1410 cm -1 are the results of dissymetrical stretching oscillation and balanced stretching oscillation of -COO-, respectively, indicating that there is a double tooth coordination structure (B et al 2019).…”