The methane dry reforming reaction (DRM) converts and CO2 into syngas, a mixture of H2 CO. When illuminated by 790 mW cm−2 white light, the 2Ni/CeO2−x catalyst CH4 beyond thermodynamic equilibrium, while energy efficiency reaches 33%. DRM is sustained in purely photocatalytic mode without external heating, yielding rates 0.21 0.75 mmol (gcat • min)−1, respectively. Theoretical analysis Ni/CeO2−...

The use of CeO2 and CeO2-containing materials as a component of heterogeneous industrial catalysts or as a support for transition metals is based on superior chemical and physical stability, high oxygen mobility and high oxygen vacancy concentrations, which are characteristic for the fluorite-type oxides (economically and technologically most important application is the use of ceria in the thr...

Cerium dioxide (CeO2) and silicon dioxide (SiO2) nanoparticles are of widespread use in modern life. This means that human beings are markedly exposed to them in their everyday life. Once passing biological barriers, these nanoparticles are expected to interact with endothelial cells, leading to systemic alterations with distinct influences on human health. In the present study we observed the ...

Atomic surface structures of CeO2 nanoparticles are under debate owing to the lack of clear experimental determination of the oxygen atom positions. In this study, with oxygen atoms clearly observed using aberration-corrected high-resolution electron microscopy, we determined the atomic structures of the (100), (110), and (111) surfaces of CeO2 nanocubes. The predominantly exposed (100) surface...

A dipole polarizable potential for reduced and doped CeO2 obtained from first principles. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. In this paper we present the parameterization of a new interionic potential for stoichiometric, reduced and doped CeO2. We use a dipole-polarizable potential (DIPPIM) and optimize its para...

Ni alloys are examined as redox-resistant alternatives to pure for solid oxide fuel cell (SOFC) anodes. Among the various candidate alloys, Ni–Co selected due their thermochemical stability in SOFC anode environment. alloy cermet anodes prepared by ammonia co-precipitation, and electrochemical performance microstructure evaluated. exhibit high durability against redox cycling, whilst current-vo...