Tuning the metal support interaction (MSI) in heterogeneous catalysts is of utmost importance for various applications in different catalysis reactions. Pt–TiN systems are strong contenders for commercial catalysts, although the charge screening of Pt and non-involvement of N reduces their effective MSI and limits it to the Pt–Ti interface. Here, the bias driven landing of gas phase synthesized Pt nanoparticles (NPs) is used to change the nature of the MSI and enhance the charge transfer phenomenon. Bias driven landing of the Pt NPs translates their impact energies to the TiN surface, resulting in a weakening of the Ti–N bonds. This facilitates a new interaction between the Pt and N atoms, resulting in an electronic equilibration in the N–Pt–Ti triumvirate, nullifying the charge screening of Pt. This change in the nature of the MSI enables long range charge transfer throughout the catalyst surface and an increase in the electrocatalytic hydrogen evolution reaction (HER) activity of the Pt–TiN system.

中文翻译：

---

利用弹道纳米粒子撞击来重新配置Pt-TiN电催化剂中的金属载体相互作用。

调整多相催化剂中的金属载体相互作用（MSI）对于不同催化反应中的各种应用至关重要。尽管Pt的电荷筛选和N的不参与降低了它们的有效MSI并将其限制在Pt-Ti界面上，但Pt-TiN系统是商业催化剂的强大竞争者。在这里，使用偏置驱动的气相合成Pt纳米颗粒（NPs）着陆来改变MSI的性质并增强电荷转移现象。偏置驱动的Pt NP着陆将其冲击能转化为TiN表面，导致Ti-N键减弱。这促进了Pt和N原子之间的新相互作用，从而导致N–Pt–Ti三元电子中的电子平衡，从而使Pt的电荷筛选无效。