Αποτελέσματα Αναζήτησης
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 ...
The absence of peaks corresponding to metallic platinum may indicate that the concentration of Pt nanocrystals is too low for XRD detection compared to that ... 2 phase junction and TiO 2, which hinders the electron flow between the CBs of ... A corresponds to anatase; XPS spectra of 0.25%Pt-TIO2/SiO2: (b) XPS survey spectrum; (c) Ti 2p ...
30 Σεπ 2023 · Pt forms a Schottky barrier at the interface of TiO 2, and this barrier improves the efficiency of photocatalytic reactions [6] compared to other dopants. Pt increases electron capture and therefore reduces the rate of electron–hole pair recombination.
1 Ιουν 2023 · Highlights. •. Synthesized TiO2 +Pt solids can be used as photo, thermal and photothermal catalysts. •. The nature of the TiO2 support affects the interaction between Pt and TiO2. •. The Schottky barrier enables the separation of charge carriers in TiO2+Pt catalysts. •.
1 Νοε 2018 · The synergistic effects of the high Schottky barrier at the Pt–TiO 2 -HA interface, which induces the stronger reduction ability of hot electrons, and intrinsic Pt catalytic activity are...
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.
15 Ιουν 2024 · Abstract. This study presents a thorough spectroscopic analysis of TiO 2 -Pt systems under LED irradiation, with a focus on elucidating the photodeposition process of Pt nanoparticles onto...
