以过渡金属磷酸盐和硫脲混合物为前驱体,采用传统的程序升温还原方法制备了Ni₂P、Co₂P、MoP和WP等过渡金属磷化物的磷硫化物活性相。第ⅥB族的Mo和W等过渡金属的磷硫化物活性相中硫/金属比高于第Ⅷ族的Ni和Co的磷硫化物活性相。硫脲是较为理想的硫源,以其作硫源制备的磷硫化物在酸性条件下(0.5 mol/L H₂SO₄)催化电解水析氢(HER)活性高于相应不含硫的过渡金属磷化物,硫的引入对Ni₂P催化剂的HER活性促进作用尤为显著。第ⅥB族Mo和W的磷化物及磷硫化物HER活性都高于第Ⅷ族的Ni和Co的磷化物和磷硫化物。

Phosphosulfides active phases of Ni₂P,Co₂P,MoP,and WP are prepared by means of conventional temperature-programmed reduction method with mixtures of transition-metal phosphates and thiourea as precursors.The ratios of sulfur/metal in phosphosulfides active phases based on VIB transition-metal (Mo and W) are higher than that in phosphosulfides active phases based on Ⅷ transition-metal (Ni and Co).Thiourea is an ideal sulfur source.Transition-metal phosphosulfides obtained with thiourea as sulfur source exhibits higher activity in hydrogen evolution reaction (HER) under acidic condition (0.5 M H₂SO₄) than the corresponding transition-metal phosphides without sulfur.The promoting effect of sulfur shows more pronounced for Ni₂P.HER activities of VIB transition-metal (Mo and W) phosphides and phosphosulfides are higher than those of Ⅷ transition-metal (Ni and Co) phosphides and phosphosulfides.

孟利红(1997-),女,硕士生,研究方向为加氢精制和电催化析氢,2339110896@qq.com