Preparation and formation mechanism of nano-sized MnOx–CeO2 hollow spheres via a supercritical anti-solvent technique
Jiang, D; Zhang, M; Jiang, H
| HERO ID | 741613 |
|---|---|
| In Press | No |
| Year | 2011 |
| Title | Preparation and formation mechanism of nano-sized MnOx–CeO2 hollow spheres via a supercritical anti-solvent technique |
| Authors | Jiang, D; Zhang, M; Jiang, H |
| Journal | Materials Letters |
| Volume | 65 |
| Issue | 8 |
| Page Numbers | 1222-1225 |
| Abstract | Manganese and cerium composite oxide (MnOx-CeO2) hollow nanospheres were successfully prepared by precipitating manganese acetylacetonate and cerium acetylacetonate from their mixed methanol solution using supercritical carbon dioxide as an anti-solvent. X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM) were employed to characterize the precursor and as-prepared MnOx-CeO2. XRD analysis reveals the cubic fluorite structure of the MnOx-CeO2. HRTEM results indicate that the MnOx-CeO2 hollow spheres have an average diameter of about 50 nm, and a wall thickness of 10-20 nm. A new formation mechanism of these nano-sized hollow spheres has also been proposed based on the experimental results. (C) 2011 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.matlet.2011.01.060 |
| Wosid | WOS:000288928500024 |
| Url | http://linkinghub.elsevier.com/retrieve/pii/S0167577X11000814 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science 000288928500024 |
| Is Public | Yes |
| Keyword | MnOx-CeO2; Hollow spheres; Supercritical anti-solvent process; Mechanism; Nanoparticles; X-ray techniques |
| Is Qa | No |