Influence of morphology on basicity of CeO2 and its use in 2-chloroethyl ethyl sulfide degradation
Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide（2-CEES） degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoe...
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| Published in | Journal of rare earths Vol. 35; no. 10; pp. 970 - 976 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
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Elsevier B.V
01.10.2017
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1002-0721 2509-4963 |
| DOI | 10.1016/S1002-0721(17)61001-9 |
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| Abstract | Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide（2-CEES） degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller method, and temperature-programmed CO2 desorption. It was found that morphologies of CeO2 could strongly affect the surface properties and the 2-CEES degradation activities. The surface basicity and the continuous 2-CEES degradation activity of spindle-like CeO2 were much better than those of the other CeO2 samples, although all the samples had identical chemical compositions. That was benefited by the largest surface area, abundant microcracks, and surface oxygen vacancies of the spindle-like CeO2. |
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| AbstractList | Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide (2-CEES) degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller method, and temperature-programmed CO2 desorption. It was found that morphologies of CeO2 could strongly affect the surface properties and the 2-CEES degradation activities. The surface basicity and the continuous 2-CEES degradation activity of spindle-like CeO2 were much better than those of the other CeO2 samples, although all the samples had identical chemical compositions. That was benefited by the largest surface area, abundant microcracks, and surface oxygen vacancies of the spindle-like CeO2.
TEM images and degradation performance (d) of CeO2 with different morphologies: (a) cubic, (b) rod-like, (c) spindle-like Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide（2-CEES） degradation. The samples were characterized using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller method, and temperature-programmed CO2 desorption. It was found that morphologies of CeO2 could strongly affect the surface properties and the 2-CEES degradation activities. The surface basicity and the continuous 2-CEES degradation activity of spindle-like CeO2 were much better than those of the other CeO2 samples, although all the samples had identical chemical compositions. That was benefited by the largest surface area, abundant microcracks, and surface oxygen vacancies of the spindle-like CeO2. |
| Author | 陈文明 冉锐 翁端 吴晓东 钟近艺 韩世同 |
| AuthorAffiliation | Key Laboratory of Advanced Materials(MOE), School of Materials Science and Engineering, Tsinghua University;State Key Laboratory of NBC Protection for Civilians;State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering, Tsinghua University |
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| Snippet | Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide（2-CEES）... Three CeO2 samples with different morphologies, i.e., cubes, rods, and spindles, were synthesized and investigated for 2-chloroethyl ethyl sulfide (2-CEES)... |
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| SubjectTerms | 2-chloroethyl ethyl sulfate CeO2 chemical warfare agents degradation morphology rare earths |
| Title | Influence of morphology on basicity of CeO2 and its use in 2-chloroethyl ethyl sulfide degradation |
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