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水的光催化分解在悬浮于水溶液里的各种Pt/TiO_2光催化剂上进行。当体系引入CO时,氢的产量大大提高,并得到了符合化学计量的氢和CO_2。实验证明氢和氧确实来源于水的光分解。TiO_2的预处理条件对于Pt/TiO_2的光催化活性影响很大,经过700℃氢气还原的TiO_2(锐钛矿)制成的催化剂性能较好。
Photocatalytic decomposition of water is carried out on various Pt / TiO 2 photocatalysts suspended in aqueous solution. When CO is introduced into the system, hydrogen yields are greatly increased and stoichiometric hydrogen and CO 2 are obtained. Experiments show that hydrogen and oxygen do come from photolysis of water. The pretreatment conditions of TiO 2 have a great influence on the photocatalytic activity of Pt / TiO 2. The catalyst prepared by TiO 2 (anatase) reduced by hydrogen at 700 ℃ has good performance.