Highly active and humidity resistive perovskite LaFeO3 based catalysts for efficient ozone decomposition

Holey Lamellar High‐Entropy Oxide as an Ultra‐High‐Activity Heterogeneous Catalyst for Solvent‐free Aerobic Oxidation of Benzyl Alcohol

“…H 2 ‐TPR test was employed to gain insights into the effect of oxygen vacancies on the reducibility of the oxygen species on holey lamellar HEO. As shown in Figure d, compared with bulk HEO, the intensity of hydrogen consumption peaks for the holey lamellar HEO are much stronger and the three peaks dramatically shift to lower temperatures in the reduction process, demonstrating the better oxygen delivery capacity in oxygen vacancy‐abundant holey lamellar HEO …”

Etched p-Type Si Nanowires for Efficient Ozone Decomposition

“…Here, the symbol * represents an active site, and the release rate of active oxygen in (3) from catalyst determines the overall rate of ozone decomposition. In our previous work, the intermediate products have been confirmed to peroxide species (O 2 2− ) determined by Raman spectroscopy [10]. The main reason for the high catalytic efficiency and excellent stability of p-type Si NWs is that they have more delocalized positively charged holes, which are beneficial to attracting electrons from adsorbed O 2 2− anions.…”

“…At present, indoor ozone which usually is generated by ultraviolet irradiation is still one of the most prominent air pollutants all over the world. In order to reduce indoor ozone concentration, a variety of decomposition catalyst have been synthesized, including activated carbon-based materials [6], noble metal materials [7–9], and transition metal oxides [10–12]. However, the relationship between catalyst property and degradation performance is not well discovered, and the highly active catalyst preparation is still challenging.…”

Holey Lamellar High‐Entropy Oxide as an Ultra‐High‐Activity Heterogeneous Catalyst for Solvent‐free Aerobic Oxidation of Benzyl Alcohol

“…H 2 -TPR test was employed to gain insights into the effect of oxygen vacancies on the reducibility of the oxygen species on holey lamellar HEO.Asshown in Figure 3d,compared with bulk HEO,the intensity of hydrogen consumption peaks for the holey lamellar HEO are much stronger and the three peaks dramatically shift to lower temperatures in the reduction process,demonstrating the better oxygen delivery capacity in oxygen vacancy-abundant holey lamellar HEO. [38] Oxygen vacancies are one of the fundamental and inherent defects of oxide materials,which have an important influence on their catalysis performance.D FT calculations were employed to demonstrate the role of oxygen vacancies in the adsorption process of benzyl alcohol molecules. [39,40] Owing to the five elements playing the same role in the reaction, the values of adsorption energies (E ads )calculated by selecting arbitrary element as adsorption site are close to each other, which is verified by the similar E ads values obtained via randomly selecting Cu and Mg as the adsorption sites in bulk HEO modeling (Supporting Information, Figure S11).…”