Sunlight-driven hydrogen production from water splitting, assisted with the commonly used Pt/TiO₂ catalyst, is a promising way to store clean and renewable energy. However, the photocatalytic activity of Pt/TiO₂ is limited owing to the agglomeration of Pt atoms. Herein, we successfully synthesized a Pt/TiO₂ catalyst, where Pt is atomically and selectively dispersed on the (1 0 1) facets of nanosized TiO₂ single crystals. A remarkably higher photocatalytic activity for H₂ evolution together with a considerable stability was observed as compared to commonly used Pt/TiO₂. This study demonstrates a promising way to achieve atomically dispersed highly-active catalyst for water splitting.

由水分解产生的阳光驱动的氢气，再加上常用的Pt / TiO ₂催化剂，是一种存储清洁和可再生能源的有前途的方法。然而，由于Pt原子的团聚，Pt / TiO ₂的光催化活性受到限制。在这里，我们成功地合成了一种Pt / TiO ₂催化剂，其中Pt原子且选择性地分散在纳米级TiO ₂单晶的（1 0 1）面上。与常用的Pt / TiO ₂相比，观察到H ₂析出的光催化活性显着提高，并且具有相当大的稳定性。这项研究证明了一种有前途的方法可以实现原子分散的高活性水分解催化剂。