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As the presence of Pt 0 was found in the XPS analysis of the ... (platinum) are in direct contact, there will be a continuous flow of electrons from the material with the lowest (TiO 2 ... Figure 2. (a) XRD diffractograms of the synthesized materials, in which A corresponds to anatase; XPS spectra of 0.25%Pt-TIO2/SiO2: (b) XPS survey spectrum ...
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 XRD analysis of the prepared sample of TiO 2 nanoparticles was done using a Bruker make diffractometer, Cu-Kα X-rays of wavelength (λ)=1.5406 Å and data was taken for the 2 θ range of 10° to 70° with a step of 0.1972°.
1 Ιουν 2023 · With the introduction of Pt particles onto the surface of TiO 2 supports, a junction is formed between the TiO 2 and Pt particles, which in turn enables the transport of light-generated “hot electrons” from Pt particles to the TiO 2 support.
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.
27 Νοε 2022 · Electron paramagnetic resonance (EPR) spectroscopy, using a Bruker EMXplus operating in X-band at room temperature, was applied to evaluate unpaired electrons in the pure TiO 2 /SiO 2 and Pt-TiO 2 /SiO 2 materials.
1 Ιουλ 2022 · Abstract. For more than 20 years, Pt/TiO 2 represents the benchmark photocatalyst/co-catalyst platform for photocatalytic hydrogen (H 2) generation. Here, single atom (SA) Pt is decorated on different polymorphs of TiO 2 (anatase, rutile, and the mixed phase of P25) using a simple immersion anchoring approach.
