Liu Siqi, Qi Weiliang, Adimi Samira, Guo Haichuan, Weng Bo, Attfield John Paul, Yang Minghui
Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, P.R. China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China.
ACS Appl Mater Interfaces. 2021 Feb 17;13(6):7238-7247. doi: 10.1021/acsami.0c20919. Epub 2021 Feb 4.
Metal-support interaction strongly influences the catalytic properties of metal-based catalysts. Here, titanium nitride (TiN) nanospheres are shown to be an outstanding support, for tuning the electronic property of platinum (Pt) nanoparticles and adjusting the morphology of indium sulfide (InS) active components, forming flower-like core-shell nanostructures (TiN-Pt@InS). The strong metal-support interaction between Pt and TiN through the formation of Pt-Ti bonds favors the migration of charge carriers and leads to the easy reducibility of TiN-Pt, thus improving the photocatalytic atom efficiency of Pt. The TiN-Pt@InS composite shows reduction of Pt loading by 70% compared to the optimal Pt-based system. In addition, the optimal TiN-Pt@InS composite exhibits a H evolution rate 4 times that of a Pt reference. This increase outperforms all other supports reported thus far.
金属-载体相互作用强烈影响金属基催化剂的催化性能。在此，氮化钛（TiN）纳米球被证明是一种出色的载体，可用于调节铂（Pt）纳米颗粒的电子性质并调整硫化铟（InS）活性组分的形态，形成花状核壳纳米结构（TiN-Pt@InS）。通过形成Pt-Ti键，Pt与TiN之间强烈的金属-载体相互作用有利于电荷载流子的迁移，并导致TiN-Pt易于还原，从而提高了Pt的光催化原子效率。与最佳的Pt基体系相比，TiN-Pt@InS复合材料的Pt负载量降低了70%。此外，最佳的TiN-Pt@InS复合材料的析氢速率是Pt参比的4倍。这种提高优于迄今为止报道的所有其他载体。
