A facile and large-scale synthesis of Co3O4/N-doped graphene for CO oxidation: Low-temperature catalytic activity and the role of nitrogen states
文献类型：期刊论文
| 作者 | Rao, Richuan; Sun, Hai; Dong, Xiongzi; Dong, Huaze; Fang, Weiguang; Tang, Yongqiang; Fang, Song; Hu, Chunming |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2020-05-30 |
| 卷号 | 513页码:1-11 |
| 关键词 | Co3O4 Graphene N-doping Nitrogen states CO oxidation |
| ISSN号 | 0169-4332 |
| 英文摘要 | Co3O4/N-doped graphene is synthesized with a one-pot and low-cost thermal decomposition in air. N-doped graphene improves their reductivity and their low-temperature catalytic performance of CO oxidation. After the treatment with dry reaction gases, the treated composites show the changed chemical structure of nitrogen species from N-(C)(3) structure to C=N-C structure. After the treatment with wet reaction gases, nitrogen species on N-doped graphene are decomposed and the anchored sites of Co3O4 nanoparticles are converted into oxygenated groups. The nitrogen sites of N-(C)(3) structure are beneficial to promote the reversible conversion between the reduced Co2+ ions and active Co3+ ions on Co3O4 nanoparticles at low temperature, but Co3+ ions can irreversibly be converted into the reduced Co2+ ions on Co3O4 nanoparticles anchored at the nitrogen sites of C=N-C structure and it is more difficult to reduce Co3O4 nanoparticles anchored at oxygenated groups from the converted nitrogen species. Since CO oxidation is promoted by the reversible conversion between Co2+ ions and Co3+ ions on Co3O4 nanoparticles, Co3O4/N-doped graphene has low-temperature catalytic activity, but the composites treated with dry reaction gases require higher temperature to show catalytic activity and the composites treated with wet reaction gases show lower catalytic performance. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/44191]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Rao, Richuan,Sun, Hai,Dong, Xiongzi,et al. A facile and large-scale synthesis of Co3O4/N-doped graphene for CO oxidation: Low-temperature catalytic activity and the role of nitrogen states[J]. APPLIED SURFACE SCIENCE,2020,513:1-11. |
| APA | Rao, Richuan.,Sun, Hai.,Dong, Xiongzi.,Dong, Huaze.,Fang, Weiguang.,...&Hu, Chunming.(2020).A facile and large-scale synthesis of Co3O4/N-doped graphene for CO oxidation: Low-temperature catalytic activity and the role of nitrogen states.APPLIED SURFACE SCIENCE,513,1-11. |
| MLA | Rao, Richuan,et al."A facile and large-scale synthesis of Co3O4/N-doped graphene for CO oxidation: Low-temperature catalytic activity and the role of nitrogen states".APPLIED SURFACE SCIENCE 513(2020):1-11. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。