Engineering carrier density at TiO2 nanotube metasurface with hole reservoir for Enhanced Photo-electrocatalysis

He, Zhenkun; Lu, Yongxin; Zhao, Jiahui; Zhao, Jiulong; Supervison, Zhida Gao; Song, Yanyan

doi:10.1016/j.apsusc.2022.155974

Cited by 6 publications

(2 citation statements)

References 63 publications

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“…According to He et al [ 72 ], this negative shift is ascribed to introducing defects levels, thus changing the surface state distribution. However, we should be aware that this change will not only result from the presence of chromium oxide surface species, but can be the effect of laser annealing inducing changes in the morphology and hydroxide groups’ distribution that finally affect the contact area at the electrode/electrolyte interface.…”

Section: Resultsmentioning

confidence: 99%

Scanning with Laser Beam over the TiO2 Nanotubes Covered with Thin Chromium Layers towards the Activation of the Material under the Visible Light

et al. 2023

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This work presents pulsed UV laser treatment (355 nm, 2 Hz) of TiO2 nanotubes decorated with chromium oxides. The modification was performed in a system equipped with a beam homogenizer, and during the irradiation, the samples were mounted onto the moving motorized table. In such a system, both precisely selected areas and any large area of the sample can be modified. Photoelectrochemical tests revealed photoresponse of laser-treated samples up to 1.37- and 18-fold under the illumination with ultraviolet-visible and visible light, respectively, in comparison to bare titania. Optimal beam energy fluence regarding sample photoresponse has been established. Scanning electron microscopy images, X-ray diffraction patterns, along with Raman and X-ray photoelectron spectra, suggest that the enhanced photoresponse results from changes solely induced in the layer of chromium oxides. It is believed that the results of the present work will contribute to a wider interest in laser modification of semiconductors exhibiting improved photoelectrochemical activity.

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Section: Resultsmentioning

confidence: 99%

Scanning with Laser Beam over the TiO2 Nanotubes Covered with Thin Chromium Layers towards the Activation of the Material under the Visible Light

et al. 2023

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“…19,20 In water environments, they can be used in photothermal vaporization for water desalination, purification, sterilization, and seawater treatment to produce fresh water. 21,22 Additionally, they can play an influential role in improving photo(electro)catalytic reactions [23][24][25] for solar fuel production, such as water splitting. Fig.…”

Section: Introductionmentioning

confidence: 99%

An elliptical nanoantenna array plasmonic metasurface for efficient solar energy harvesting

Ashrafi-Peyman,

Jafargholi,

Moshfegh

2024

Nanoscale

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Reduced TiO2 nanotube arrays as environmental catalysts that enable advanced oxidation processes: A mini review

Jo,

Im,

Weon

et al. 2023

Chemical Engineering Journal

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Engineering carrier density at TiO2 nanotube metasurface with hole reservoir for Enhanced Photo-electrocatalysis

Cited by 6 publications

References 63 publications

Scanning with Laser Beam over the TiO2 Nanotubes Covered with Thin Chromium Layers towards the Activation of the Material under the Visible Light

Scanning with Laser Beam over the TiO2 Nanotubes Covered with Thin Chromium Layers towards the Activation of the Material under the Visible Light

An elliptical nanoantenna array plasmonic metasurface for efficient solar energy harvesting

Reduced TiO2 nanotube arrays as environmental catalysts that enable advanced oxidation processes: A mini review

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