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氢气是下一代清洁和可再生能源的最佳燃料.电化学技术是现有的高效产氢技术之一.二维层状二硫化钼(MoS_2)材料被誉为潜在的氢气析出反应(HER)催化剂.通过调节MoS_2的电子态密度可以改善其对HER的电催化性能.我们研究了通过直接还原法合成出金纳米粒子/二硫化钼(Au-MoS_2)复合材料.X射线光电子能谱和拉曼谱表征结果表明,Au和MoS_2间存在着强烈的电子相互作用,Au纳米粒子中的部分电子注入MoS_2的导带,增加了MoS_2电荷密度,使其能级与HER能级更加匹配,使HER的电催化活性得到显著改善,Au-MoS_2对HER电催化的过电势降低了50 mV.
Hydrogen is the best fuel for the next generation of clean and renewable energy sources.Electrochemical technology is one of the most efficient hydrogen production technologies currently available.Dimensionally layered MoS 2 is known as a potential hydrogen evolution reaction (HER) Catalyst can improve the electrocatalytic activity of HER by adjusting the electronic density of state of MoS 2. We studied the synthesis of gold nanoparticles / molybdenum disulfide (Au-MoS 2) by direct reduction method.X-ray photoelectron spectroscopy and pull The results of the Manger spectrum show that there is a strong electron interaction between Au and MoS_2. Some electrons in the Au nanoparticle are injected into the conduction band of MoS_2, increasing the charge density of MoS_2, making its energy level more compatible with the HER level, making HER The electrocatalytic activity of Au-MoS 2 was reduced by 50 mV.