Tailored metastable Ce-Zr oxides with highly distorted lattice oxygen for accelerating redox cycles
文献类型：期刊论文
| 作者 | Dittmeyer, Roland2; Zhang, Zhe1; Yu, Jiafeng1; Zhang, Jixin1; Ge, Qingjie1; Xu, Hengyong1; Dallmann, Felix2; Sun, Jian1 |
| 刊名 | CHEMICAL SCIENCE
 |
| 出版日期 | 2018-04-07 |
| 卷号 | 9期号:13页码:3386-3394 |
| ISSN号 | 2041-6520 |
| DOI | 10.1039/c8sc00729b |
| 文献子类 | Article |
| 英文摘要 | Ceria-based catalysts are widely used in oxidation or oxidation-reduction reactions in the field of environmental science. Their catalytic functions are determined by their ability to exchange oxygen species with oxidants. The enhancement of oxygen release is desired since it is often the rate-determining step in redox cycles. Herein, we developed a lattice oxygen distortion method to enhance oxygen activation by quenching the Ce-Zr oxide nanoparticles formed from an extremely high temperature. This process can ensure the formation of solid solutions as well as avoiding atomic rearrangement during calcination, retaining the lattice oxygen at a metastable and disordered state without vacancies. Reduction, vacuum or metal deposition will easily induce oxygen release accompanied by vacancy creation. The metastable oxides can provide about 19 times more oxygen vacancies than traditional ones in a CO atmosphere. CO oxidation rates increased with increasing Zr content from 25 to 75% and achieved a new level, which is attributed to the acceleration of oxygen circulation via promoting oxygen release and supplying plenty of oxygen vacancies for redox cycles. This strategy is expected to be applied in the design and fabrication of improved oxygen storage materials. |
| WOS关键词 | TEMPERATURE CO OXIDATION ; DOPED CERIA CATALYSTS ; RAMAN-SPECTROSCOPY ; SOLID-SOLUTIONS ; MIXED OXIDES ; PARTICLE-SIZE ; SURFACE ; GOLD ; NANOPARTICLES ; VACANCIES |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000431113300016 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/167142]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Yu, Jiafeng; Sun, Jian |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China 2.Karlsruhe Inst Technol, Inst Micro Proc Engn, Karlsruhe, Germany |
| 推荐引用方式 GB/T 7714 | Dittmeyer, Roland,Zhang, Zhe,Yu, Jiafeng,et al. Tailored metastable Ce-Zr oxides with highly distorted lattice oxygen for accelerating redox cycles[J]. CHEMICAL SCIENCE,2018,9(13):3386-3394. |
| APA | Dittmeyer, Roland.,Zhang, Zhe.,Yu, Jiafeng.,Zhang, Jixin.,Ge, Qingjie.,...&Sun, Jian.(2018).Tailored metastable Ce-Zr oxides with highly distorted lattice oxygen for accelerating redox cycles.CHEMICAL SCIENCE,9(13),3386-3394. |
| MLA | Dittmeyer, Roland,et al."Tailored metastable Ce-Zr oxides with highly distorted lattice oxygen for accelerating redox cycles".CHEMICAL SCIENCE 9.13(2018):3386-3394. |
入库方式： OAI收割
来源：大连化学物理研究所
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