单分散硫化钼的可控制备及电催化特性  

Controllable fabrication of monodispersed MoS_2 nanoparticles and electrocatalytic properties

作　　者：齐立红[1] 周杨涛 潘凯[2] QI Li-Hong ZHOU Yang-Tao PAN Kai(College of Science, Harbin Engineering University, Harbin 150001, China School of Chemistry and Materials Science, Harbin 150080, China)

机构地区：[1]哈尔滨工程大学理学院,哈尔滨150001 [2]黑龙江大学化学化工与材料学院,哈尔滨150080

出　　处：《黑龙江大学工程学报》2017年第3期31-35,共5页Journal of Engineering of Heilongjiang University

基　　金：国家自然科学基金资助项目(51302047)

摘　　要：采用高温热解的方法,利用乙酰丙酮钼为钼源、硫粉为硫源,以油酸油胺为形貌控制试剂,通过控制反应温度合成了小尺寸的单分散MoS_2纳米粒子催化剂。油酸和油胺在高温下依然稳定,是合成纳米材料形貌控制剂的不二选择。小尺寸材料比表面积大,充分暴露了材料边缘位置的S-Mo-S的反应活性位点,实现了氢离子在催化剂表面高效的吸附脱附能力,极大地提高了其电催化析氢的能力。起始电位达到150 mV,且具有很好的稳定性。Monodispersed MoS2 nanoparticles had been prepared via a pyrolysis method, using molybdenylacetylacetonate as Mo source, powder sulfur as S source, oleic acid and oil amine as morphology controller. Because oleic acid and oil amine are stable at high temperature, they are good choice for synthesize monodispersed MoS2 nanoparticles with small sizes. This structure possessed large surface area and exposed more catalytic active site as the edge of S-Mo-S for hydrogen atom adsorption, which effectively enhanced the capacity for the hydrogen evolution reaction. Its onset potential reached 150 mV and this material possessed good stability.

关 键 词：高温热解 二硫化钼纳米粒子 表面活性原子 电催化 

分 类 号：O643.3[理学—物理化学]