Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates
文献类型：期刊论文
| 作者 | Zhu, Chen2; Guan, Shengnan2; Li, Wenzhi2; Ogunbiyi, Ajibola T.2; Chen, Kun2; Zhang, Qi1
|
| 刊名 | ACS OMEGA
 |
| 出版日期 | 2021-12-14 |
| 页码 | 12 |
| ISSN号 | 2470-1343 |
| DOI | 10.1021/acsomega.1c04769 |
| 通讯作者 | Li, Wenzhi(liwenzhi@ustc.edu.cn) ; Zhang, Qi(zhangqi@ms.giec.ac.cn) |
| 英文摘要 | Here, we prepare a MnO2/CeO2 hollow sphere catalyst using the carbon sphere as a self-sacrificing template for formaldehyde (HCHO) removal. In the feed gas of 20 ppm of HCHO (balanced by N-2) + 20 vol % O-2, a HCHO removal efficiency of 70% was achieved at 20 degrees C and full conversion was reached at around 47 degrees C at GHSV = 50,000 mL (g(cat) h)(-1) for MnO2/CeO2 hollow spheres. The catalytic performance and structural and chemical properties of MnO2/CeO2 hollow spheres for the removal of core carbon spheres were explored, and the influence of using the carbon sphere as a self-sacrificing template was proved by comparing with carbon@MnO2/CeO2 (a core carbon sphere with a MnO2/CeO2 shell) and nonmorphologic MnO2/CeO2. The properties of the MnO2/CeO2 hollow spheres are significantly improved compared to carbon@MnO2/CeO2 (removal efficiency of 45% at 150 degrees C) and MnO2/CeO2 (removal efficiency of 46% at 20 degrees C) as a result of an evolution in the interaction between Mn/Ce and carbon. This increase in the interaction strength seems to (i) increase the oxygen vacancy, (ii) promote the oxygen species mobility, and (iii) improve the chemical stability of the MnO2/CeO2 hollow spheres. We believe that these results are beneficial to the fabrication of binary transition metal oxides and applications of them in HCHO removal. |
| WOS关键词 | CATALYTIC PERFORMANCE ; OXIDATION ; REMOVAL ; OXIDES |
| 资助项目 | Major Science and Technology Projects of Anhui Province[202003a05020022] ; Key Research and Development Projects in Anhui Province[202004a06020053] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000731994200001 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | Major Science and Technology Projects of Anhui Province ; Key Research and Development Projects in Anhui Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/35544]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Wenzhi; Zhang, Qi |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 2.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Lab Basic Res Biomass Convers & Utilizat, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Chen,Guan, Shengnan,Li, Wenzhi,et al. Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates[J]. ACS OMEGA,2021:12. |
| APA | Zhu, Chen,Guan, Shengnan,Li, Wenzhi,Ogunbiyi, Ajibola T.,Chen, Kun,&Zhang, Qi.(2021).Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates.ACS OMEGA,12. |
| MLA | Zhu, Chen,et al."Degradation of Formaldehyde over MnO2/CeO2 Hollow Spheres: Elucidating the Influence of Carbon Sphere Self-Sacrificing Templates".ACS OMEGA (2021):12. |
入库方式： OAI收割
来源：广州能源研究所
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