溶剂热一步法制备二硫化钼/亚氧化钛电解水析氢催化剂

通过水热法一步合成了系列二硫化钼/亚氧化钛（MoS₂/Ti_xO_y）复合催化剂，研究了溶剂、硫源和钼源等合成条件对所合成的催化剂电催化析氢活性的影响以及亚氧化钛的作用。结果表明，溶剂、硫源、钼源、亚氧化钛等因素都对催化剂的结构和电解水析氢性能有重要影响。溶剂水、水解可产生铵根离子的硫源和钼源以及亚氧化钛的加入有利于获得具有高析氢活性的催化剂。其中，以水为溶剂、硫代乙酰胺为硫源、钼酸铵为钼源得到的催化剂析氢活性最高，电解水析氢测试中达到10 mA/cm²电流密度时需要的过电势仅为280 mV。

Preparation of MoS2/TixOy catalysts via a one-pot solvothermal method for electrocatalytic water splitting to produce hydrogen

A series of MoS₂/Ti_xO_y catalysts were prepared by a one pot solvothermal synthesis method and the effects of solvent, sulfur source, molybdenum source and titanium subdioxide conductive agent on the electrocatalytic activity of MoS₂/Ti_xO_y in hydrogen evolution from water splitting were investigated. The results showed that the crystal structure of MoS₂/Ti_xO_y catalyst as well as its catalytic performance is greatly influenced by the solvent, sulfur source, molybdenum source and titanium subdioxide conductive agent. Water, sulfur and molybdenum sources which can produce ammonium ions via hydrolysis, and the conductive agents are beneficial to improving the hydrogen evolution activity of the MoS₂/Ti_xO_y catalyst in water splitting. In particular, with water as the solvent, thioacetamide and ammonium molybdate as the sulfur and molybdenum sources, respectively, the MoS₂/Ti_xO_y catalyst with the highest hydrogen evolution activity was obtained; it needs only 280 mV overpotential to reach 10 mA/cm² current density in the electrolysis of water.