Microstructure of mixed oxide thin films prepared by magnetron sputtering at oblique angles

Gil-Rostra, Jorge; García‐García, Francisco J.; Ferrer, F. J.; González‐Elipe, Agustín R.; Yubero, F.

doi:10.1016/j.tsf.2015.01.058

Cited by 6 publications

(3 citation statements)

References 26 publications

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“…This ion bombardment induces the ejection of material from the target onto a substrate located nearby. MS deposition gives rise to homogeneous films of controlled low metal loading and thickness, operates at room temperature, and it is easily scalable and quite reproducible [15][16][17][18][19]. The compactness of the deposited material with this technique can be tuned through deposition geometry, i.e., angle between the flux of sputtered particles from the target and substrate normal [19].…”

Section: Introductionmentioning

confidence: 99%

“…MS deposition gives rise to homogeneous films of controlled low metal loading and thickness, operates at room temperature, and it is easily scalable and quite reproducible [15][16][17][18][19]. The compactness of the deposited material with this technique can be tuned through deposition geometry, i.e., angle between the flux of sputtered particles from the target and substrate normal [19]. Thus, MS at oblique deposition angles (MS-OAD) renders mesoporous films with open microstructure (compared with normal deposition configuration that gives in general compact thin films [18]).…”

Section: Introductionmentioning

confidence: 99%

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CuxCo3-xO4 ultra-thin film as efficient anodic catalysts for anion exchange membrane water electrolysers

López-Fernández

Gil-Rostra

Espinós

et al. 2019

Journal of Power Sources

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

CuxCo3-xO4 ultra-thin film as efficient anodic catalysts for anion exchange membrane water electrolysers

López-Fernández

Gil-Rostra

Espinós

et al. 2019

Journal of Power Sources

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“…To prove this concept, we have designed and prepared a series of highly porous a-TiO 2 -based layered systems and correlate their photoactivity with the existence of light confinement effects for wavelengths around the onset of absorption of a-TiO 2 (i.e., ∼380 nm). These nanostructured multilayered systems have been manufactured by electron beam evaporation in an oblique angle configuration (OAD), , a procedure known to render columnar thin films with empty volume ratios up to 50%. We and other laboratories have applied this procedure to the fabrication of single photocatalytic layers of TiO 2 and other materials − or the fabrication of dye-sensitized solar cells. , …”

Section: Introductionmentioning

confidence: 99%

Titania Enhanced Photocatalysis and Dye Giant Absorption in Nanoporous 1D Bragg Microcavities

Rico

Turk

Yubero

et al. 2022

ACS Appl. Nano Mater.

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Light trapping effects are known to boost the photocatalytic degradation of organic molecules in 3D photonic structures of anatase titania (a-TiO 2 ) with an inverse opal configuration. In the present work, we show that photocatalytic activity can also be enhanced in a-TiO 2 thin films if they are incorporated within a nanoporous 1D optical resonant microcavity. We have designed and manufactured multilayer systems that, presenting a high open porosity to enable a straightforward diffusion of photodegradable molecules, provide light confinement effects at wavelengths around the absorption edge of photoactive a-TiO 2 . In brief, we have observed that a nanoporous 1D Bragg microcavity prepared by electron beam evaporation at oblique angles comprising a central defect layer of nanoporous a-TiO 2 boosts the photocatalytic degradation of nitrobenzene and methyl orange dye solutions. The multilayer structure of the microcavity was designed to ensure the appearance of optical resonances at the a-TiO 2 layer location and wavelengths around the absorption onset of this semiconductor. In this porous 1D Bragg microcavity, the diffusion constraints of molecules through the capping layers covering the a-TiO 2 are effectively compensated by an increase in the photocatalytic activity due to the light confinement phenomena. We also report that the absorption coefficient of methyl orange dye solution infiltrated within the pore structure of the microcavity is exalted at the wavelengths of the corresponding optical resonances. This effect gives rise to a small but non-negligible visible light photodegradation of dye molecules. The possibilities of tailoring the design of 1D photonic systems to boost the photocatalytic activity of a-TiO 2 are discussed.

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Ionomer-Free Nickel-Iron bimetallic electrodes for efficient anion exchange membrane water electrolysis

López-Fernández

Gómez-Sacedón

Gil-Rostra

et al. 2022

Chemical Engineering Journal

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Microstructure of mixed oxide thin films prepared by magnetron sputtering at oblique angles

Cited by 6 publications

References 26 publications

CuxCo3-xO4 ultra-thin film as efficient anodic catalysts for anion exchange membrane water electrolysers

CuxCo3-xO4 ultra-thin film as efficient anodic catalysts for anion exchange membrane water electrolysers

Titania Enhanced Photocatalysis and Dye Giant Absorption in Nanoporous 1D Bragg Microcavities

Ionomer-Free Nickel-Iron bimetallic electrodes for efficient anion exchange membrane water electrolysis

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