Herein, we highlighted that a catalyst system of NiSe₂ nanoparticle/NiO nanosheet catalyst exhibited efficient synergism for energy and environmental-relevant urea-assisted water electrolysis reactions. The spectral study and microscopic analysis demonstrated the formation of NiSe₂ nanoparticle/NiO nanosheet heterostructure and efficient NiO bond and NiSe bond synergism. Owing to various factors such as the strong synergetic coupling effects between NiSe₂ nanoparticle and NiO nanosheet, unique structure features, increased active sites and amount of intrinsic Ni³⁺ ions, efficient synergism was found on the NiSe₂ Nanoparticle/NiO nanosheet for urea-assisted water electrolysis by comparing with the NiSe₂ Nanoparticle and NiO nanosheet alone. It required a cell voltage of 1.39 V, about 210 mV less than that of water electrolysis, confirming the less energy consumption during the electrolysis. Notably, it also shows remarkably superior long-term durability. The current work may extend the nanoparticle-nanosheet catalysts system for simultaneous wastewater treatment and clean energy production.

在本文中，我们强调指出，NiSe ₂纳米颗粒/ NiO纳米片状催化剂的催化剂体系对能源和与环境有关的尿素辅助水电解反应显示出有效的协同作用。光谱研究和显微分析证明了NiSe ₂纳米颗粒/ NiO纳米片异质结构的形成以及有效的Ni O键和Ni Se键的协同作用。由于各种因素，例如NiSe ₂纳米颗粒与NiO纳米片之间的强协同作用，独特的结构特征，活性位点和固有Ni ³⁺离子数量增加，在NiSe ₂上发现了有效的协同作用。与单独的NiSe ₂纳米颗粒和NiO纳米片进行比较，用于尿素辅助水电解的纳米颗粒/ NiO纳米片。它所需的电池电压为1.39 V，比水电解要低约210 mV，从而确认了电解过程中的能耗较低。值得注意的是，它还显示出显着优异的长期耐久性。当前的工作可能会扩展纳米颗粒-纳米片催化剂系统，以同时进行废水处理和清洁能源生产。