کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6469594 | 1423975 | 2017 | 5 صفحه PDF | دانلود رایگان |
- Growth of self-organized anodic molybdenum oxide nanotube arrays
- Fabrication of a core-shell structure consisting of a Mo sub-oxide core and a shell of Mo-Se/S
- Synergistic effect of the mixed dichalcogenide and the conductive core for enhanced HER activity
The present work shows the growth and conversion of self-organized anodic Mo-oxide nanotube arrays to core-shell structures consisting of a conducting molybdenum sub-oxide core and a shell of Mo-Se/S - this structure is then investigated for electrochemical hydrogen evolution catalysis. To form the core-shell tubes, we first anneal MoO3 nanotube arrays under vacuum conditions, to induce reduction to MoO2. Subsequently these oxide tubes are thermally sulfurized and selenized resulting in dichalcogenide@sub-oxide structures. Under optimized conditions, the mixed dichalcogenide (selenized and sulfurized) tube walls on the conductive oxide core lead to a synergistic beneficial effect for the electrocatalytic H2 generation from H2SO4 solution.
Journal: Electrochemistry Communications - Volume 82, September 2017, Pages 112-116