| Title: | Insights into non-crystalline structure of solid solution Ce-Mn co-oxide nanofibers for efficient low-temperature toluene oxidation |
| Author(s): | Chen Y; Zeng Z; Liu D; Zhang J; Guo Y; Zou J; Guan J; Xu X; Li L; |
| Address: | "School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, China. School of Energy Science and Engineering, Central South University, Changsha, 410083, Hunan, China. liqingli@hotmail.com" |
| Journal Title: | Environ Sci Pollut Res Int |
| DOI: | 10.1007/s11356-023-29299-7 |
| ISSN/ISBN: | 1614-7499 (Electronic) 0944-1344 (Linking) |
| Abstract: | "The controllable preparation of efficient non-crystalline solid solution catalysts is a great challenge in the catalytic oxidation of volatile organic compounds. In this work, series non-crystalline solid solution structured Ce-Mn co-oxide nanofibers were creatively prepared by adjusting Ce/Mn molar ratios using electrospinning. 0.20CeMnO(x) (the ratio of Ce to Mn was 0.2) displayed an outstanding low-temperature toluene oxidation activity (T(90) = 233 degrees C). The formation of the amorphous solid solution and the unique nanofiber structure both contributed to a large specific surface area (S = 173 m(2) g(-1)) and high adsorbed oxygen content (O(ads)/O = 41.3%), which enhanced the number of active oxygen vacancies. The synergies between non-crystalline structure and active oxygen species markedly improved oxygen migration rate as well as redox ability of the catalysts. Additionally, in situ diffuse reflectance infrared Fourier transform spectra showed that the absorbed toluene could be completely oxidized to CO(2) and H(2)O with benzyl alcohol, benzaldehyde, benzoic acid, and maleic anhydride as intermediates. In summary, this study provided an alternative route for the synthesis of non-crystalline metal co-oxide nanofibers" |
| Keywords: | *Oxides/chemistry Temperature *Nanofibers Oxygen/chemistry Toluene/chemistry Catalysis Active oxygen species Ce-Mn co-oxide nanofibers Non-crystalline solid solution Reaction mechanism Toluene oxidation VOCs; |
| Notes: | "MedlineChen, Yanzhu Zeng, Zheng Liu, Dongyang Zhang, Jing Guo, Yang Zou, Jianwu Guan, Juan Xu, Xiang Li, Liqing eng 21878338/the National Natural Science Foundation of China/ 2019YFC0214302/the National Key Research and Development Program of China/ Germany 2023/08/24 Environ Sci Pollut Res Int. 2023 Sep; 30(44):99830-99841. doi: 10.1007/s11356-023-29299-7. Epub 2023 Aug 24" |
