Scalable and sustainable photocatalytic hydrogen evolution via water splitting requires highly active, stable and earth-abundant cocatalysts to replace rare and expensive metal Platinum. Herein, two facile and similar thermal injection methods are employed to synthesize 3D NiTe₂ microsphere and 0D/3D Ni/NiTe₂ Schottky heterojunction photocatalyst. The optimized 6% Ni/NiTe₂ composite shows good H₂ evolution activity with a rate of 2214.2 μmol g⁻¹·h⁻¹- about 1.55 times higher than that of single NiTe₂. Especially, it is the first time to report that NiTe₂ and Ni/NiTe₂ composite have the activity of producing H₂O₂ through the two-electron reduction of O₂ during photocatalytic water splitting. This enhanced photocatalytic performance can be attributed to the rapid separation and migration of photogenerated charge carriers, low interfacial resistance, abundant surface active sites and two-electron reduction reaction process. This work provides an innovative approach for designing and constructing the potential metal-semiconductor composites with unique electronic structures.

通过水分解可扩展且可持续的光催化氢分解需要高活性，稳定且富含地球的助催化剂来替代稀有且昂贵的金属铂。在此，采用两种简便且相似的热注入方法来合成3D NiTe ₂微球和0D / 3D Ni / NiTe ₂肖特基异质结光催化剂。优化的6％Ni / NiTe ₂复合材料表现出良好的H ₂析出活性，其速率为2214.2μmolg ^-1 ·h ^-1-比单一NiTe ₂高1.55倍。特别是，这是第一次报告NiTe ₂和Ni / NiTe ₂复合具有产生H的活性₂ Ò ₂通过两电子的O简化₂光催化分解水期间。这种增强的光催化性能可以归因于光生电荷载流子的快速分离和迁移，低界面电阻，丰富的表面活性中心和双电子还原反应过程。这项工作为设计和构造具有独特电子结构的潜在金属-半导体复合材料提供了创新的方法。