In this paper, ultrathin two dimensional (2D) g-C₃N₄ nanosheet worked as support for the deposition of ultrasmall Pt nanoclusters. The average size of Pt nanocluster is about 3.2nm. Firstly, the as-prepared Pt/g-C₃N₄ modified electrode exhibited enhanced electrocatalytic ability in methanol oxidation reaction (MOR) compared to bare Pt nanoparticles. Moreover, when this electrode was upon visible light irradiation, higher performance of MOR was clearly observed compared to the traditional ambient electrocatalytic oxidation. This is owing to the synergistic effects of photocatalytic and electrocatalytic MOR together with the efficient interfacial charger transfer in Pt/g-C₃N₄. These results show that 2D ultrathin g-C₃N₄ nanosheets can be used as promising photoactived support in the fields of solar and chemical energy conversion and also provide more insights into developing novel visible light photo-responsive electrode in direct methanol fuel cell.

中文翻译：

---

超薄石墨C3N4纳米片作为有前途的可见光活化载体，可促进光电催化甲醇氧化

在本文中，超薄二维（2D）gC ₃ N ₄纳米片为超小Pt纳米团簇的沉积提供了支持。Pt纳米簇的平均尺寸约为3.2nm。首先，与裸露的Pt纳米粒子相比，制备的Pt / gC ₃ N ₄修饰电极在甲醇氧化反应（MOR）中表现出增强的电催化能力。此外，当该电极在可见光照射下时，与传统的环境电催化氧化相比，可以清楚地观察到MOR的更高性能。这归因于光催化和电催化MOR的协同作用以及Pt / gC ₃ N _4中有效的界面电荷转移。这些结果表明，二维超薄gC ₃ N ₄纳米片可用作太阳能和化学能转化领域中有希望的光敏载体，也为开发直接甲醇燃料电池中的新型可见光光响应电极提供了更多见识。