TiO₂ films by sol‐gel spin‐coating deposition with microbial antiadhesion properties

Abstract

Intensive use of antibiotics induced adaptations in bacteria, which developed antibiotic resistance. This is becoming a serious health problem, particularly in the hospital, food industry, or public transport. It is also important to produce surfaces that not only are bactericidal but also prevent adhesion and the consequent biofilm formation, which can make the bacteria resistant to conventional disinfection methods. In this work, a simple and inexpensive method to obtain surfaces TiO2 film coated has been realized to prevent attachment and bacterial proliferation on surfaces. The synthesis and deposition procedure has been finalized to the realization of a uniform coating, whose physical, morphological, and structural features are suitable to inhibit the proliferation of the bacteria and in particular the adhesion of the biofilm. The suitability of the obtained coating has been attested by RBS, X‐ray diffraction (XRD), SEM, UV‐vis, and Raman techniques. The obtained coatings were homogeneous anatase titania films with an excellent adherence to the substrate and a transmittivity higher than 80% in the visible region. The results show that the TiO2 films considerably reduce microbial contamination on the surface (~98% reduction) feature that makes this coating suitable for antibacterial applications.

Effect of temperature on the physical, optical and photocatalytic properties of TiO2 nanoparticles

“…By virtue of its characteristics, it has found applications in various fields, from the energy one for the production of solar cells [3] to the environmental one, in particular in the degradation of organic pollutants [4]. It is also used in the production of coatings with antibacterial properties [5][6][7][8] or with self-cleaning capabilities [9].…”

Enhanced adsorption capacity of porous titanium dioxide nanoparticles synthetized in alkaline sol

“…It has a compact crystalline structure and exists in three phases: anatase, rutile and brookite. It can be synthesized by several chemical [25][26][27][28] and physical [29,30] techniques in the form of nanoparticles (NPs) [31,32] and thin films [33][34][35]. At low calcination temperatures (T C < 400 °C), it is amorphous and exhibits a porous structure but, to our best knowledge, there are no many studies that take into consideration this property for environment applications.…”

Titanium Dioxide Microscale and Macroscale Structures: A Mini-Review

“…Titanium dioxide nanoparticles (TiO 2 NPs) are widely applied in various areas, such as wastewater treatment, dye-sensitized solar cells (DSSCs), lithium-ion batteries (electrodes), chemical sensing, hydrogen production, antimicrobial applications, and cosmetics [1][2][3][4]. TiO 2 is an n-type semiconductor due to its oxygen deficiency [5].…”