Synthsis Of Subnanometer Molybdenum Sulfide/Carbon Nanotube Composites And Application In Hydrogen Evolution Reaction

With the massive use of fossil fuels,the problems of energy shortage and environmental pollution are becoming more and more serious.Electrochemical hydrogen evolution from water is considered to be an effective solution to the above problems.However,it is still an urgent task to find low-cost and high-catalytic hydrogen evolution catalysts to replace the high-cost,precious mental platinum-based catalysts with low reserves of the earth.Herein,the study shows the synthesis of subnanometer molybdenum sulfide/carbon nanotube composites and application in hydrogen evolution reaction,the main contents are as follows:(1)In this section,considering the inherent outstanding properties of catbon nanotubes,such as high conductivity and strong adsorbability,so via a one-step electrodepositon procedure on the surface of carbon nanotubes and achieve the in situ growth of subnanometer MoSx.The SEM,TEM,STEM and XPS tests showed the exisitece of subnanometer molybdenum sulfide particles(about 0.8nm)on the CNTs.The results showed that the catalyst showed more excellent hydrogen evolution performance(low Tafel slope and high TOF value)in acidic environment.(2)Subnanosized molybdenum sulfide particles were synthesized by in-situ electrochemical deposition on CNTs functionalized by tris(phenylthio)methane by TPM via π–π stacking interactions.The results showed that the catalyst showed more excellent hydrogen evolution performance(low Tafel slope and high TOF value)in acidic environment.