Iron-doped photocatalytic TiO2 sputtered coatings on plastics for self-cleaning applications

Titanium dioxide, TiO 2 , is an important photocatalytic material that exists as two main polymorphs, anatase and rutile. The presence of either or both of these phases impacts on the photocatalytic performance of the material. The present work reviews the anatase to rutile phase transformation. The synthesis and properties of anatase and rutile are examined, followed by a discussion of the thermodynamics of the phase transformation and the factors affecting its observation. A comprehensive analysis of the reported effects of dopants on the anatase to rutile phase transformation and the mechanisms by which these effects are brought about is presented in this review, yielding a plot of the cationic radius versus the valence characterised by a distinct boundary between inhibitors and promoters of the phase transformation. Further, the likely effects of dopant elements, including those for which experimental data are unavailable, on the phase transformation are deduced and presented on the basis of this analysis.

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“…• Built Environment Self-cleaning coatings [34,38,39,[41][42][43][44][45][46][47][48][49][50]. Non-spotting glass [47,51].…”

Section: Titania Applicationsmentioning

confidence: 99%

Review of the anatase to rutile phase transformation

2010

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“…Diverse pulse magnetron sputtering (PMS) systems have been used to deposit TiO 2 films with thicknesses of up to 300 nm and layers comprising mainly anatase at temperatures ≤130 • C. Using this approach, textiles presenting low thermal resistance, thin polymer films, and polycarbonates (PC) have been coated with TiO 2 , TiO 2 -metal, and TiO 2 metal-oxides [61,[96][97][98]. The basic installation of a DCMS unit is shown in Figure 1.…”

Section: Tio 2 /Cu Synthesis Leading To Uniform Adhesive and Antibamentioning

confidence: 99%

Recent Developments in Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces under Indoor Visible Light

2017

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This review focuses on Cu/TiO 2 sequentially sputtered and Cu-TiO 2 co-sputtered catalytic/photocatalytic surfaces that lead to bacterial inactivation, discussing their stability, synthesis, adhesion, and antibacterial kinetics. The intervention of TiO 2 , Cu, and the synergic effect of Cu and TiO 2 on films prepared by a colloidal sol-gel method leading to bacterial inactivation is reviewed. Processes in aerobic and anaerobic media leading to bacterial loss of viability in multidrug resistant (MDR) pathogens, Gram-negative, and Gram-positive bacteria are described. Insight is provided for the interfacial charge transfer mechanism under solar irradiation occurring between TiO 2 and Cu. Surface properties of 2D TiO 2 /Cu and TiO 2 -Cu films are correlated with the bacterial inactivation kinetics in dark and under light conditions. The intervention of these antibacterial sputtered surfaces in health-care facilities, leading to Methicillin-resistant Staphylococcus Aureus (MRSA)-isolates inactivation, is described in dark and under actinic light conditions. The synergic intervention of the Cu and TiO 2 films leading to bacterial inactivation prepared by direct current magnetron sputtering (DCMS), pulsed direct current magnetron sputtering (DCMSP), and high power impulse magnetron sputtering (HIPIMS) is reported in a detailed manner.

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“…Copyright 2012 Elsevier. [72,73]. In general, the nanophotocatalysts can be integrated on the surface to treat the glass of windows, walls of structures, or flat surfaces [74][75][76][77] or in the bulk of the structure (concrete) (Figure 7) [78][79][80].…”

Section: Smart Materials (Self-cleaning)mentioning

confidence: 99%

Industrial synthesis and characterization of nanophotocatalysts materials: titania

Ramos-Delgado

Gracia-Pinilla

Mangalaraja

et al. 2016

Nanotechnology Reviews

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Despite the recent synthesis and identification of a diverse set of new nanophotocatalysts that has exploded recently, titanium dioxide (TiO 2 ) remains among the most promising photocatalysts because it is inexpensive, non-corrosive, environmentally friendly, and stable under a wide range of conditions. TiO 2 has shown excellent promise for solar cell applications and for remediation of chemical pollutants and toxins. Over the past few decades, there has been a tremendous development of nanophotocatalysts for a variety of industrial applications (i.e. for water purification and reuse, disinfection of water matrices, air purification, deodorization, sterilization of soils). This paper details traditional and new industrial routes for the preparation of nanophotocatalysts and the characterization techniques used to understand the physical chemical properties of them, like surface area, ζ potential, crystal size, and phase crystallographic, morphology, and optical transparency. Finally we present some applications of the industrial nanophotocatalysts.

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Iron-doped photocatalytic TiO2 sputtered coatings on plastics for self-cleaning applications

Cited by 111 publications

References 15 publications

Review of the anatase to rutile phase transformation

Review of the anatase to rutile phase transformation

Recent Developments in Accelerated Antibacterial Inactivation on 2D Cu-Titania Surfaces under Indoor Visible Light

Industrial synthesis and characterization of nanophotocatalysts materials: titania

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