Physical properties of anatase TiO2 nanocrystallites: based photoanodes doped with Cr2O3

Abouhaswa, A.S.

doi:10.1007/s11082-020-02275-y

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…The results of the reflectance measurements and respective Kubelka–Munk functions are presented in Figure 5 . For all the prepared samples, the absorption is primarily limited to the UV part of the spectrum that is typical for titania-based materials [ 55 ]. As it comes to pristine titania, it is well-known that the energy band gap values of rutile and anatase are 3.0 eV and 3.2 eV, respectively.…”

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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“…In general, UV-Vis analysis of the TiO2 NPs is not relevant for the synthesis, but it is very important for calculating the band gap, especially when the synthesized TiO 2 NPs are used in electronics (Abouhaswa, 2020 ). As a semiconductor, TiO 2 NPs, in order to be used in electronics, must have an optimal band gap which can be calculated by UV-diffraction reflectance spectroscopy (UV-DRS).…”

Section: Characterization Of Tio 2 Npsmentioning

confidence: 99%

Microbial synthesis of titanium dioxide nanoparticles and their importance in wastewater treatment and antimicrobial activities: a review

Rathore,

Yadav,

Gacem

et al. 2023

Front. Microbiol.

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Nanotechnology (NT) and nanoparticles (NPs) have left a huge impact on every field of science today, but they have shown tremendous importance in the fields of cosmetics and environmental cleanup. NPs with photocatalytic effects have shown positive responses in wastewater treatment, cosmetics, and the biomedical field. The chemically synthesized TiO2 nanoparticles (TiO2 NPs) utilize hazardous chemicals to obtain the desired-shaped TiO2. So, microbial-based synthesis of TiO2 NPs has gained popularity due to its eco-friendly nature, biocompatibility, etc. Being NPs, TiO2 NPs have a high surface area-to-volume ratio in addition to their photocatalytic degradation nature. In the present review, the authors have emphasized the microbial (algae, bacterial, fungi, and virus-mediated) synthesis of TiO2 NPs. Furthermore, authors have exhibited the importance of TiO2 NPs in the food sector, automobile, aerospace, medical, and environmental cleanup.

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Toward a novel and accurate relationship between electrical and optical conductivity in opto-material sciences: New strategy

Gomaa

Yahia

2022

J Comput Electron

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Physical properties of anatase TiO2 nanocrystallites: based photoanodes doped with Cr2O3

Cited by 9 publications

References 25 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

Microbial synthesis of titanium dioxide nanoparticles and their importance in wastewater treatment and antimicrobial activities: a review

Toward a novel and accurate relationship between electrical and optical conductivity in opto-material sciences: New strategy

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