Achieving highly efficient hydrogen generation and uniform Ag nanoparticle preparation via hydrolysis of Mg9Ag alloy milled under hydrogen gas

作者：Si, T Z; Han, L; Li, Y T; Liu, D M; Zhang, Q A^*; Ouyang, L Z; Zhu, M

来源：International Journal of Hydrogen Energy, 2014, 39(23): 11867-11872.

DOI：10.1016/j.ijhydene.2014.06.021

• Hydrolysis
• Mg-Ag alloy
• Hydrogen generation
• Ag nanoparticles

A Mg9Ag alloy is employed as a medium for both production of hydrogen and preparation of Ag nanoparticles through hydrolysis. Mg9Ag milled under H-2 exhibits very favorable structural characteristics, i.e., yielding a fine nanocrystal powder and partial hydrogen-induced phase decomposition. As a result, a hydrogen yield of 730 mL g(-1) is obtained in 25 min at 298 K, a much higher rate than produced by samples not milled or milled under argon. Moreover, the hydrolysis by-product can be recycled to obtain Ag nanoparticles by removing insoluble Mg(OH)(2) using an added HCl solution. These results show that this process provides a highly efficient method for economically produce hydrogen and Ag nanoparticles.

• 出版日期2014-8-4
• 单位华南理工大学; 安徽工业大学