1. Synthesis of Ni-doped ceria nanoparticles and their unusual surface reduction in hydrogen
- Author
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M. Barreau, D. Chen, J. Zhang, V. Papaefthimiou, C. Petit, D. Salusso, E. Borfecchia, S. Turczyniak-Surdacka, K. Sobczak, S. Mauri, L. Braglia, P. Torelli, S. Zafeiratos, Barreau, M, Chen, D, Zhang, J, Papaefthimiou, V, Petit, C, Salusso, D, Borfecchia, E, Turczyniak-Surdacka, S, Sobczak, K, Mauri, S, Braglia, L, Torelli, P, and Zafeiratos, S
- Subjects
Biomaterials ,NEXAFS ,X-ray absorption spectroscopy ,Operando analysis ,In situ DRIFT ,Square -planar symmetry ,Colloid and Surface Chemistry ,Polymers and Plastics ,Operando analysi ,Materials Chemistry ,Catalysis ,Electronic, Optical and Magnetic Materials - Abstract
This work presents an original approach to preparing pure and Ni-doped CeO2 nanoparticles (NPs) that can be directly drop-casted on a substrate or calcined to form powders. The reduction of the NPs in H-2 is very different than the one usually anticipated for supported Ni-CeO2 catalysts. In situ soft X-ray absorption and infrared spectroscopies revealed that the reduction of Ce4+ into Ce3+ in H-2 proceeds via simultaneous oxidation of Ni2+ ions into Ni delta+(2
- Published
- 2022