Research on a novel Ni-doped TiN modified N-doped CNTs supported Pt catalysts and their synergistic effect for methanol electrooxidation
| Autor: | Huang Zhaojie, Chun Chen, Luhua Lin, Zhou Qiuman, Zhanchang Pan, Yu Ke, Guanghui Hu, Yanbin Xu, Shoukun Wu, Yingsheng Lin |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Catalyst support Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis Electron transfer chemistry.chemical_compound Fuel Technology chemistry Chemical engineering Reactivity (chemistry) Methanol 0210 nano-technology Platinum Tin Nitriding |
| Zdroj: | International Journal of Hydrogen Energy. 43:22519-22528 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2018.10.081 |
| Popis: | A novel Ni-doped TiN modified N-doped CNTs hybrid nanotubes (N-CNTs@TiNiN) is constructed and serves as hybrid support for the platinum (Pt) catalyst. We prepare the N-CNTs@TiNiN support by a solvothermal process followed by a nitriding process. It is used as anodic catalyst support to test methanol electrooxidation. By contrast, the current density of Pt/N-CNTs (0.34 A mgpt−1) is nearly 1.31 times more than Pt/CNTs (0.26 A mgpt−1) while Pt/TiNiN (0.56 A mgpt−1) is almost 1.33 times as much as Pt/TiN (0.42 A mgpt−1). What's more, among all the catalysts investigated in this work, the novel Pt/N-CNTs@TiNiN (0.86 A mgpt−1) shows the highest reactivity for methanol oxidation, which is also much more active and durable than the commercial JM Pt/C catalyst, showing only slight activity variation even after 12 000 potential cycles. The synthetic Pt/N-CNTs@TiNiN catalyst is researched on its electrocatalytic performance toward methanol electrooxidation and the high activity and durability might be mainly attributed to the electron transfer due to the synergistic effect of the robust TiNiN NPs and N-CNTs by inducing both co-catalytic and electronic effects. |
| Databáze: | OpenAIRE |
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