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27 Δεκ 2021 · Here, we have developed model Pt/TiO 2 catalysts based on the deposition of colloidal Pt nanoparticles and studied their atomic and electronic structures before and after a postdeposition treatment that induces catalytic activity using aberration-corrected scanning transmission electron microscopy, electron energy loss spectroscopy, and first ...
15 Απρ 2022 · For this reason, the introduction of platinum (Pt), known as a noble metal, into TiO 2 structure has been considered as an effective strategy. This strategy presents a better separation efficiency of electron-hole pairs resulting in a higher photocatalytic activity of the catalyst.
As the presence of Pt 0 was found in the XPS analysis of the ... A Schottky barrier is formed between Pt 0 /PtO 2 phase junction and TiO 2, which hinders the electron flow between the CBs of ... XRD diffractograms of the synthesized materials, in which A corresponds to anatase; XPS spectra of 0.25%Pt-TIO2/SiO2: (b) XPS survey spectrum; (c) Ti ...
1 Ιουν 2023 · The TEM-selected area electron diffraction (SAED) patterns of the prepared TiO 2 +Pt catalysts (inset in Fig. 2, with ab-initio simulations for anatase, Pt, and their mixture) correspond to anatase TiO 2 and the minor presence of Pt in all the examined TiO 2 +Pt samples.
30 Σεπ 2023 · With the increased Pt doping concentration on TiO 2, the material's electrons flow quickly from the TiO 2 valence band to the Pt conduction band, readily available at the surface of the material, and then more quickly towards the electrolyte.
15 Ιουν 2024 · This study presents a thorough spectroscopic analysis of TiO2-Pt systems under LED irradiation, with a focus on elucidating the photodeposition process of Pt nanoparticles onto TiO2...
Titanium dioxide (TiO2) has been extensively studied with regard to its application as the physical sunblock in sunscreen or other cosmetic products, as well as in environmental remediation...
