摘要
电解水制氢是一种高效清洁的产氢方式,但开发高效稳定的催化剂用于电解水仍面临很大挑战。本文通过磷掺杂策略调节负载于碳纳米管的钌纳米颗粒的电子结构,实现高效促进碱性析氢。经过对反应条件的优化,所得Ru-P@CNT(300)(CNT=碳纳米管)催化剂具有最优的碱性析氢反应(HER)催化活性,其达到电流密度10 mA·cm^(-2)时仅需要38 mV的过电位。同时随着电流密度的逐渐增大,Ru-P@CNT(300)展现出了优于商用Pt/C的活性,说明随着电流的增大,其具有高于商用Pt/C的催化潜能。同时,该催化剂还表现出良好的催化稳定性。当Ru-P@CNT(300)用于碱性海水析氢中时,其表现出的活性与在纯1 mol/L KOH中几乎一致,没有出现明显衰退,10 mA·cm^(-2)处的过电位仅为39 mV,而且在海水中依然保持良好的稳定性。
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.
作者
苗红福
张燕云
王磊
赖建平
Miao Hongfu;Zhang Yanyun;Wang Lei;Lai Jianping(College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)
出处
《山东化工》
CAS
2024年第1期1-6,11,共7页
Shandong Chemical Industry
基金
国家自然科学基金(22001143,52072197)
山东省自然科学基金(ZR2020YQ34)。
关键词
掺杂
钌基材料
磷
载体
析氢
doping
ruthenium-based nanomaterials
phosphorus
supporter
hydrogen evolution
