NiO-SrTiOs

Domen, K., Naito, S., Onishi, T., Tamaru, K. 1982. Photocatalytic decomposition of liquid water on a NiO-SrTiO, catalyst. Chem Phys Lett 92 433 34. 

Domen K, Naito S, Soma M, Onishi T, Tamaru K (1980) Photocatalytic decomposition of water vapor on a NiO-SrTiOs catalyst. Chem Commun 543-544... 

Domen K, Kudo A, Onishi T (1986) Mechanism of photocatalytic decomposition of water into H2 and O2 over NiO-SrTiOs. J Catal 102 92-98... 

Figure 2-29. Relationship between and growth temperature of YBCO films on SrTiO.i (100). Open circles - NiO gas used as an oxygen source filled circles - O2 used as an oxygen source. (From Tsuruoka et al. [161].)...

Domen and co-workers first succeeded in the photocatalytic decomposition of pure water into H2 and O2 NiO-loaded SrTiOs powder [242,243]. The NiO cocatalyst for H2 evolution is usually activated by H2 reduction and subsequent O2 oxidation to form a NiO/Ni doublelayer structure that is convenient for electron migration from a photocatalyst substrate to a cocatalyst [332]. The pretreated NiO cocatalysts often denoted as NiO in the literature. The NiO cocatalyst does not cause the back reaction between H2 and O2, being different from Pt. The excellent NiO cocatalyst has often been employed for many photocatalysts for water splitting. Rh is also a suitable cocatalyst for the SrTiOa photocatalyst [333]. 

Since 2009, several papers have been published which consider the bond valence of surfaces. Many have involved the L. Marks and Poeppelmeier groups at Northwestern University and deal with the surfaces of strontium titanate (SrTiOa). These include a discovery of a homologous series of surface structures on SrTiOs (110) [6], studies of the (2 x 2) [10], c(4 x 2) [11], and (Vl3 x Vl3)/ 33.7° [12] surface reconstructions on the SrTiOs (100) surface, an examination of water adsorbed on the SrTiOs (100) surface [13, 14], and a review of several previously proposed surface structures on SrTiOs, MgO, and NiO from a bond valence perspective [15]. 

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