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 ...
- Self-Enhanced Catalytic Activity of Pt/TiO2 via Electronic Metal ...
Pt nanoclusters confined in ordered mesoporous TiO2...
- Self-Enhanced Catalytic Activity of Pt/TiO2 via Electronic Metal ...
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 ...
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.
5 Ιαν 2023 · Pt nanoclusters confined in ordered mesoporous TiO2 facilitate the generation of interfacial active sites (Ti3+-Ov-Ptδ+) during the reaction, enhancing the cyclic catalytic activity.
1 Δεκ 2023 · Prepared TiO 2 nanorods were characterized by XRD and evidenced nanorods morphology through high resolution scanning electron microscope (HR-SEM). We have performed a detailed study on the current-voltage (I-V) characteristics of the prepared heterojunction device (Pt/TiO 2 /FTO).
23 Μαΐ 2020 · The strong metal–support interaction (SMSI) is one of the most important concepts in heterogeneous catalysis. Herein we report a study of Pt-TiO 2 SMSI using Pt/rutile TiO 2 (110) model catalysts with different Pt particle sizes by means of X-ray photoelectron spectroscopy, ion scattering spectroscopy, and the adsorption of probe molecules.
30 Ιουλ 2024 · The coated surfaces are characterized by X-ray diffraction (XRD), showing the characteristic peaks of Pt deposited and the presence of Pt, PtO2, and TiO2 after thermal oxidation. Field emission scanning electron microscopy reveals a uniform Pt coating on Ti6Al4V with a thickness of 2–3 µm.
