Nguyen Nhat Truong, Yoo JeongEun, Altomare Marco, Schmuki Patrik
Department of Materials Science and Engineering WW4-LKO, University of Erlangen-Nuremberg, Martensstrasse 7, D-91058 Erlangen, Germany.
Chem Commun (Camb). 2014 Sep 4;50(68):9653-6. doi: 10.1039/c4cc04087b.
In the present work we introduce a technique to form a photocatalyst based on Pt nanoparticles suspended over the mouth of anodic TiO2 nanotubes. These structures are obtained by decorating the top end of highly ordered TiO2 nanotubes with a web of TiO2 nanofibrils, followed by sputter deposition of a minimum amount of Pt. A subsequent thermal dewetting step forms 3-6 nm-sized Pt nanoparticles along the nanofibrils. These structures, when compared to conventional Pt decoration techniques of TiO2 nanotubes, show strongly enhanced photocatalytic H2 evolution efficiency.
在本工作中，我们介绍了一种基于悬浮在阳极TiO₂纳米管管口的铂纳米颗粒形成光催化剂的技术。这些结构是通过用TiO₂纳米纤维网修饰高度有序的TiO₂纳米管顶端，然后溅射沉积少量的铂而获得的。随后的热去湿步骤沿着纳米纤维形成3 - 6纳米大小的铂纳米颗粒。与传统的TiO₂纳米管铂修饰技术相比，这些结构显示出光催化析氢效率的显著提高。
