A Study on the Characteristic and Antibacterial Activity of Ti3Ox Thin Films

Abstract

A pure Ti target in Ar/O2 gas mixture was used to synthesize Ti3Ox thin film on a glass substrate by Reactive High-Power Impulse Magnetron Sputtering (HiPIMS) under different sputtering power (2 and 2.5 kW). The influence of HiPIMS parameters on thin films’ structural, morphological, chemical composition, optical and photocatalytic, and antibacterial properties was investigated. In this study, Ti3Ox thin films can be synthesized using the HiPIMS method without the post-annealing process. Two co-existence phases (hexagonal Ti3O and base-centered monoclinic Ti3O5 phases) existed on the Ti3Ox films. It is found that the peak intensity of (006) Ti3O hexagonal slightly increased as the sputtering power increased from 2 to 2.5 kW. The Ti3Ox thin-film bandgap values were 3.36 and 3.50 eV for 2 and 2.5 kW, respectively. The Ti3Ox films deposited at 2.5 kW showed good photocatalytic activity under UV light irradiation, with a higher methylene blue dye degradation rate than TiO2 thin films. The antibacterial study on Ti3Ox thin films exhibited a high inhibition percentage against E. coli and S. aureus. This study demonstrates that Ti3Ox thin films can promote high photocatalytic and antibacterial activity.

Insight on Photocatalytic and Photoinduced Antimicrobial Properties of ZnO Thin Films Deposited by HiPIMS through Thermal Oxidation

“…A standard glass substrate (FEA, Microscope slides ground Edges Plain, FEA Industries Inc., Morton, PA, US) was 76 × 25 mm. The substrates were cleaned before using the sonicating and rinsing procedure described in reference [ 4 , 9 ]. The distance between target and substrate was set at 150 mm.…”

“…The ZnO thin-film antimicrobial properties were evaluated by the interaction of the microbial cells with the surface of the ZnO thin films under UV-A irradiation, as followed by the previous report [ 9 , 47 , 50 ] ( Figure 1 ). Thin-film samples of 1 cm × 1 cm, previously sterilized with 70% ethanol for 2 h and rinsed in sterile deionized water, then were placed in 12-weel sterilized cell culture plates (SPL Life Sciences Co., Ltd., Pocheon-si, Gyeonggi-do, Korea).…”

“…Its material is acknowledged as the most crucial photocatalyst that strongly resists chemical and photo corrosions [ 1 ]. Photocatalysis has been considered a facile, green and cost effective method used for the degradation of dyes [ 2 , 3 , 4 ], catalytic process [ 5 ], Solar cells [ 6 ], photodetector application [ 7 ], and antibacterial applications [ 8 , 9 ].…”

Long-term heat-storage materials based on λ-Ti3O5for green transformation (GX)

“…The vast potential of l-Ti 3 O 5 has attracted many researchers: various synthesis methods have been developed, [36][37][38][39][40][41][42][43][44][45][46][47][48][49] studies of phase transition mechanism have been reported, [50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] and novel functionalities are being explored. [67][68][69][70][71][72][73][74][75][76] Since l-Ti 3 O 5 is composed of readily available elements of titanium and oxygen, it offers harmless, sustainable, and economic features, which are advantageous in industrial applications.…”

Phase Modulation of Ti3O/R-TiO2 Nanocomposites for the Self-Powered Photoelectrochemical Sensing of Tetracycline

“…Among them, titanium oxides have sparked considerable interest for their diverse crystalline structures and intricate optical and electrochemical properties. 14 Despite TiO 2 only responding to the UV light range, it is one of the most classical photoactive materials owing to its nontoxicity, low cost, excellent chemical stability, and favorable energy band edge. According to previous studies, rutile TiO 2 (3.0 eV) with stable chemical properties has a narrower band gap than that of anatase (3.2 eV), allowing it to operate in the visiblelight region.…”