摘要
以四水合钼酸铵和硫代乙酰胺为原料,通过简单的一步水热法在钼箔上生成了MoS_(2)纳米片(命名为MoS_(2)/MF).首先探讨了不同氨水加入量对样品的结构及催化性能的影响,得到最佳的MoS_(2)/MF样品,其次通过对最佳样品的组成、形貌以及微观结构等测试分析,表明存在于MoS_(2)/MF中的1T相MoS_(2)以及活性位点的增加是提高电催化产氢性能的重要原因.电催化测试表明,在酸性条件下,最优化的MoS_(2)/MF电极在100 mA/cm^(2)时的过电势为269 mV,甚至能比得上20%Pt/C/MF,且能进行65 h的稳定工作.
The MoS_(2)nanosheets were prepared on molybdenum foils(denoted as MoS_(2)/MF)using(NH_(4))_(6)·Mo_(7)O_(24)·4H_(2)O and C_(2)H_(5)NS as raw materials by simple one-step hydrothermal method.First,the optimal MoS_(2)/MF sample was obtained by exploring the effects of different adding amount of ammonium hydroxide on the structure and catalytic performance.Through the test and analysis of the composition,morphology and microstructure of MoS_(2)/MF,the results showed that generation of 1T phase MoS_(2)and the increase of catalytically active sites mainly contribute to the improvement of the catalytic hydrogen production performance.The electrocatalytic results showed that the optimized MoS_(2)/MF electrode presented the overpotentials of 269 mV at 100 mA/cm^(2) in acidic condition,even comparable to 20%Pt/C/MF,and it exhibited long-term catalytic stability for at least 65 h.
作者
黄剑锋
肖婷
冯亮亮
曹丽云
徐瑞
HUANG Jian-feng;XIAO Ting;FENG Liang-liang;CAO Li-yun;XU Rui(School of Materials Science and Engineering, Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials, Shaanxi University of Science & Technology, Xi′an 710021, China)
出处
《陕西科技大学学报》
北大核心
2021年第2期106-111,118,共7页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金项目(21701107)
陕西省科技厅自然科学基金项目(2019JQ-018)
陕西科技大学科研启动基金项目(2016QNBT-07)。
关键词
电催化
水分解
MoS_(2)
产氢反应
electrocatalyst
water splitting
MoS_(2)
hydrogen evolution reaction
