Iwase Akihide, Kato Hideki, Kudo Akihiko
Department of Applied Chemistry, Tokyo University of Science, Japan.
ChemSusChem. 2009;2(9):873-7. doi: 10.1002/cssc.200900160.
Alkaline earth metal ions (Ca, Sr, and Ba) are doped into a NaTaO(3) photocatalyst, yielding fine particles and surface structures with nanometer-scale "steps." The formation of the surface nanostep structure depends on the amount of doped Sr and Ba. The photocatalytic water splitting over NaTaO(3) is enhanced: NaTaO(3) doped with 0.5 and 1.0 mol % of Sr shows high activities for photocatalytic water splitting without loading of a co-catalyst, and the photocatalytic activity is further improved by loading with a NiO co-catalyst.
碱土金属离子（钙、锶和钡）被掺杂到钽酸钠光催化剂中，生成具有纳米级“台阶”的细颗粒和表面结构。表面纳米台阶结构的形成取决于掺杂锶和钡的量。钽酸钠的光催化水分解性能得到增强：掺杂0.5 mol%和1.0 mol%锶的钽酸钠在不负载助催化剂的情况下对光催化水分解表现出高活性，并且通过负载氧化镍助催化剂进一步提高了光催化活性。
