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Decoupling many-body interactions in the CeO(111) oxygen vacancy structure with statistical learning and cluster expansion.
Nanoscale
January 2025
Photon Science Research Center for Carbon Dioxide, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
Oxygen vacancies (V's) are of paramount importance in influencing the properties and applications of ceria (CeO). Yet, comprehending the distribution and nature of V's poses a significant challenge due to the vast number of electronic configurations and intricate many-body interactions among V's and polarons (Ce ions). In this study, we established a cluster expansion model based on first-principles calculations and statistical learning to decouple the interactions among the Ce ions and V's, thereby circumventing the limitations associated with sampling electronic configurations.
View Article and Find Full Text PDFSupport effect on methane combustion over iridium catalysts: Unraveling the metal-support interaction mechanism.
J Colloid Interface Sci
January 2025
School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Marine Biobased Materials, Qingdao University, Qingdao 266071 China; Institute of Micro/Nano Materials and Devices, Ningbo University of Technology, Ningbo 315211 China. Electronic address:
The redox properties of iridium (Ir) active component are critically important in methane combustion. Interface engineering is highly effective in modulating the redox properties of active metals via tailoring the metal-support interaction (MSI). Herein, Ir catalysts supported on different carriers (TiO, CeO, AlO) were synthesized and evaluated for methane combustion.
View Article and Find Full Text PDFPhase Transformation Behavior, Mechanical Properties Under Thermal Stress, and Slag-Induced Erosion of 2-4 mol% CeO-Doped CaO-Stabilized Zirconia.
Materials (Basel)
December 2024
School of Materials Science and Engineering, Pusan National University, Busan 46241, Republic of Korea.
We investigated the phase transitions, mechanical properties, and chemical durability of a composition of 9 mol% CaO-stabilized zirconia (9CSZ) doped with 2-4 mol% CeO under thermal stress against molten slag. The monoclinic phase fraction of 9CSZ was 7.14% at room temperature, and CSZ doped with 2-4 mol% CeO showed a slightly lower value of 5.
View Article and Find Full Text PDFInvestigation of the photoelectric properties of nanostructured CeO/CuO heterojunction: Photocatalytic degradation of sulfadiazine in water.
Environ Res
January 2025
School of Science, Xi'an University of Technology, Xi'an, 710048, China.
The rapid complexation of photogenerated electrons-holes with copper (Cu) greatly limits the large-scale application of cuprous oxide (CuO) as a photocatalyst. Therefore, using a hydrothermal method, a type Ⅱ heterojunction structure was constructed by modifying CuO with cerium (IV) oxide (CeO). The CeO/CuO heterojunction photocatalyst effectively increased the photogenerated electron density and reduced the surface transfer impedance.
View Article and Find Full Text PDFMultifunctional Hydrogel with Photothermal ROS Scavenging and Antibacterial Activity Accelerates Diabetic Wound Healing.
Adv Healthc Mater
January 2025
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
Poor diabetic wound healing poses a critical threat to human health. Excessive oxidative stress and increased susceptibility to bacterial infection are key issues that impede diabetic wound healing. Cerium oxide nanoparticles (CeO NPs) have attracted increasing attention because of their unique antioxidant and antimicrobial properties.
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