Huma Amber, Karina Vjūnova, Z. Sukackienė, D. Šimkūnaitė, J. Vaičiūnienė, L. Tamašauskaitė-Tamašiūnaitė, E. Norkus
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引用次数: 0
摘要
本研究采用无电解金属电镀法和吗啉硼烷作为还原剂,对沉积在泡沫镍基底上的钴铁(CoFe)、钴铁锰(CoFeMn)和钴铁钼(CoFeMo)镀层的催化制氢效果进行了评估。使用扫描电子显微镜(SEM)和电感耦合等离子体光发射光谱(ICP-OES)对所制备涂层的表面形貌、结构和成分进行了表征。研究了制备的 CoFe/Ni、CoFeMn/Ni 和 CoFeMo/Ni 催化剂在不同温度下从碱性硼氢化钠(NaBH4)溶液中制氢的催化活性。研究发现,在 343 K 下,使用 CoFe/Ni、CoFeMo/Ni 和 CoFeMn/Ni 涂层的制氢率分别达到约 5.2、7.8 和 11.7 L min-1 g-1。
Hydrogen production on CoFe, CoFeMn and CoFeMo coatings deposited on Ni foam via electroless metal plating
In this study, the catalytic hydrogen generation was evaluated on the cobalt–iron (CoFe), cobalt–iron–manganese (CoFeMn) and cobalt–ironmolybdenum (CoFeMo) coatings deposited on the Ni foam substrate using the electroless metal plating method and morpholine borane as the reducing agent. The characterisation of the surface morphology, structure and composition of resulted coatings was done using scanning electron microscopy (SEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The catalytic activity of the prepared CoFe/Ni, CoFeMn/Ni and CoFeMo/Ni catalysts was investigated for hydrogen generation from an alkaline sodium borohydride (NaBH4) solution at different temperatures. It was found that the hydrogen generation rate of ca. 5.2, 7.8 and 11.7 L min–1 g–1 was achieved by using the CoFe/ Ni, CoFeMo/Ni and CoFeMn/Ni coatings, respectively, at 343 K. Among the investigated catalysts, CoFeMn/Ni exhibits the lowest activation energy of 62.4 kJ mol–1 and the highest HGR of 11.7 L min–1 g–1 at 343 K.
期刊介绍:
Chemija publishes original research articles and reviews from all branches of modern chemistry, including physical, inorganic, analytical, organic, polymer chemistry, electrochemistry, and multidisciplinary approaches.