Phosphorus Doping Regulates Ru Loaded on Carbon Nanotubes to Promote Alkaline Hydrogen Evolution
Hydrogen production from electrolyzed water is an efficient and clean way of hydrogen production,but the development of efficient and stable catalysts for electrolyzed water still faces great challenges.In this paper,the electronic structure of ruthenium nanoparticles loaded on carbon nanotubes is adjusted by phosphorus doping strategy to achieve efficient promotion of alkaline hydrogen evolution.After optimizing the reaction conditions,the obtained Ru-P@CNT(300)(CNT=carbon nanotube)catalyst has the best alkaline hydrogen evolution reaction(HER)catalytic activity.It only requires an overpotential of 38 mV to reach a current density of 10 mA·cm-2.At the same time,as the current density increases,Ru-P@CNT(300)exhibits better activity than the commercial Pt/C,indicating that it has higher catalytic potential than the commercial Pt/C as the current increases.At the same time,the catalyst also showed good catalytic stability.When Ru-P@CNT(300)was used for hydrogen evolution in alkaline seawater,its activity was almost the same as that in pure 1 mol/L KOH,and there was no significant decay.The overpotential at 10 mA·cm-2 was only 39 mV,and it still maintained good stability in seawater.
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