Clean and renewable energies are highly desired to replace traditional fossil fuels, and the electrocatalytic hydrogen evolution reaction (HER) has been regarded as an environment-friendly way to generate hydrogen. Transition metal sulfides have proven to be promising electrocatalysts; however, their HER performance is still unsatisfactory. Herein, we demonstrate enhanced HER activity can be achieved in ZnIn₂S₄ (ZIS) nanosheets coupled to TiO₂ nanofibers by boron doping for the first time. The introduction of B significantly increases the sulfur vacancies, and thus, is favorable for enhancing the HER activity of ZIS@TiO₂. Moreover, the well-matched band alignment between B doped ZIS and TiO₂ results in promoted charge transfer at the interface, further contributing to the enhanced electrocatalytic activity.

非常需要清洁和可再生能源来替代传统的化石燃料，而电催化析氢反应（HER）被认为是一种环境友好的制氢方式。过渡金属硫化物已被证明是有前途的电催化剂。然而，他们的 HER 表现仍然不尽如人意。在此，我们首次证明了通过硼掺杂与 TiO ₂纳米纤维偶联的ZnIn ₂ S ₄ (ZIS) 纳米片可以提高 HER 活性。B的引入显着增加了硫空位，因此有利于提高ZIS@TiO ₂的HER活性。此外，B 掺杂的 ZIS 和 TiO ₂之间匹配良好的能带排列 结果促进了界面处的电荷转移，进一步有助于提高电催化活性。