Unravelling the correlation of dielectric barrier discharge power and performance of Pt/CeO₂catalysts for toluene oxidation

Abstract

Two “volcano” peaks in the relevant activity curve showcased that plasma discharge power had a significant impact on the activity of Pt/CeO2-Px catalysts and modulating discharge power could be regarded as an efficient method to optimize catalyst performance.

The Effect of Precursor Concentration on the Crystallite Size of CeO2 to Enhance the Sulfur Resistance of Pt/CeO2 for Water Gas Shift

“…Catalysts 2024, 14, x 6 of 16 species interacting between Pt nanoparticles and CeO2, and O species present on the CeO2 surface. In detail, the first low-temperature reduction peak includes not only the reduction of PtOx but also the partial reduction of O species on the surface of CeO2 [31]. The second low-temperature reduction peak is attributed to the reduction of Pt-O-Ce species, formed by the interaction between Pt and CeO2 [31].…”

“…In detail, the first low-temperature reduction peak includes not only the reduction of PtOx but also the partial reduction of O species on the surface of CeO2 [31]. The second low-temperature reduction peak is attributed to the reduction of Pt-O-Ce species, formed by the interaction between Pt and CeO2 [31]. And the peak observed at temperatures exceeding 600 °C arises from the reduction of bulk CeO2 [32].…”

“…The reduction behavior of the catalyst was evaluated using H 2 -temperature programmed reduction (H 2 -TPR), as shown in Figure 3. The observed peaks during the reduction process can be categorized into two groups: reduction peaks at temperatures below 200 • C and those at high temperatures exceeding 600 • C [27,31,32]. At temperatures below 200 • C, one or two peaks were observed for each catalyst.…”

Engineering Pt nanoclusters on CeO2 surface with abundant point defects by in situ confined-domain encapsulation strategy for the catalytic elimination of VOCs

“…The second peak belonged to the reduction of adsorbed oxygen on the subsurface of CeO 2 . [58][59][60] It is obvious from Fig. 7b that the reduction peaks of CeO 2 shifted toward lower temperatures after the addition of Pt, and the onset reduction temperatures of each catalyst were in the order Pt NC @CeO 2 (67 °C) < Pt NP @CeO 2 (97 °C) < Pt NP /CeO 2 (133 °C) < Pt NP @CeO 2 -MOF (159 °C) < CeO 2 (333 °C).…”