Khan Muhammad Waqas, Loomba Suraj, Ali Rashad, Mohiuddin Md, Alluqmani Ahmed, Haque Farjana, Liu Yongkun, Sagar Rizwan Ur Rehman, Zavabeti Ali, Alkathiri Turki, Shabbir Babar, Jian Xian, Ou Jian Zhen, Mahmood Asif, Mahmood Nasir
School of Engineering, RMIT University, Melbourne, VIC, Australia.
Applied Porous Materials Unit, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Clayton, VIC, Australia.
Front Chem. 2020 Aug 28;8:733. doi: 10.3389/fchem.2020.00733. eCollection 2020.
Phosphides of transition metals (TMPs) are a developing class of materials for hydrogen evolution reaction (HER) as an alternative to expensive noble metals to produce clean energy. Herein, the nitrogen-doped molybdenum oxide (MoO) is developed via a facile and simple hydrothermal method, followed by annealing in the N atmosphere and phosphorization to form a nitrogen-doped oxygenated molybdenum phosphide (N-MoP) sphere-shaped structure. The developed N-doped phosphide structure depicts enhanced HER activity by reaching a current density of 10 mA cm at a very low overpotential of only 87 mV, which is much better than annealed nitrogen-doped molybdenum oxide (A-MoO) 138 mV in alkaline medium. N-MoP is a highly efficient electrocatalyst for HER attributed to a more exposed surface, large electrode/electrolyte interface and appropriate binding energies for reactants. This study extends the opportunity of developing nitrogen-doped TMPs, which can display exceptional properties as compared to their oxides.
过渡金属磷化物（TMPs）作为一种用于析氢反应（HER）的新型材料正在不断发展，有望替代昂贵的贵金属来生产清洁能源。在此，通过简便的水热法制备了氮掺杂氧化钼（MoO），随后在氮气气氛中退火并进行磷化处理，形成了氮掺杂的含氧钼磷化物（N-MoP）球形结构。所制备的氮掺杂磷化物结构在仅87 mV的极低过电位下达到10 mA cm的电流密度，展现出增强的析氢反应活性，这在碱性介质中比退火后的氮掺杂氧化钼（A-MoO）的138 mV要好得多。N-MoP是一种用于析氢反应的高效电催化剂，这归因于其更暴露的表面、较大的电极/电解质界面以及反应物合适的结合能。本研究拓展了开发氮掺杂过渡金属磷化物的机会，与它们的氧化物相比，氮掺杂过渡金属磷化物可展现出优异的性能。
