Ce0.15Zr0.85O2 was investigated in the two-step water splitting reaction. High-temperature treatment in N-2 induced compositional and structural heterogeneities which contributed to a six-fold increase of H-2 yield after the first cycle. Ceria surface enrichment and the formation of a ceria-zirconia oxynitride phase positively affected the reduction and oxidation steps.
Pappacena, A., Boaro, M., Armelao, L., Llorca, J., Trovarelli, A. Water splitting reaction on Ce0.15Zr0.85O2 driven by surface heterogeneity. "Catalysis Science & Technology", 2016, vol. 6, núm. 2, p. 399-403.