Mechano-catalytic overall water splitting on some mixed oxides
2000; Elsevier BV; Volume: 63; Issue: 2-4 Linguagem: Inglês
10.1016/s0920-5861(00)00457-0
ISSN1873-4308
AutoresGo Hitoki, Tsuyosi Takata, Shigeru Ikeda, Masahiko Hara, Junko N. Kondo, Masato Kakihana, Kazunari Domen,
Tópico(s)Advanced Condensed Matter Physics
ResumoSimple transition metal oxides such as NiO, Co3O4, Fe3O4 and Cu2O were found to catalytically decompose water into H2 and O2 by mechanical energy. The reaction is regarded as “mechano-catalytic” overall water splitting” and is a quite novel catalytic reaction. In this paper, some general aspects on the mechano-catalytic overall water splitting are reviewed on simple oxides. In addition, recent results on the mechano-catalytic activity of a groups of mixed oxides, wolramite-type oxides with a formula of ABO4 (A=Fe, Co, Ni and Cu, etc., B=W, Mo), are shown. AWO4 (A=Fe, Co, Ni and Cu) decomposed water into H2 and O2 under the supply of mechanical energy, indicating that mechano-catalytic overall water splitting proceeded on wolframite-type compounds containing 3d-transition metals. AMoO4 (A=Fe, Co, Ni) also decomposed water into H2 and O2 under supply of mechanical energy. The reaction properties on wolframite-type oxides are discussed.
Referência(s)