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Hierarchically porous monoliths based on low-valence transition metal (Cu, Co, Mn) oxides: gelation and phase separation
| Content Provider | Oxford Academic |
|---|---|
| Author | Lu, Xuanming Kanamori, Kazuyoshi Nakanishi, Kazuki |
| Copyright Year | 2020 |
| Abstract | Hierarchically porous monoliths based on copper (Cu), cobalt (Co) and manganese (Mn) oxides with three-dimensionally (3D) interconnected macropores and open nanopores were prepared using metal bromides as precursors via a sol–gel process accompanied by phase separation. The difficulty of gelation for low-valence metal cation was overcome by introducing a highly electronegative Br atom near to the metal atom to control the rates of hydrolysis and polycondensation. The 3D interconnected macropores were obtained using appropriate polymers to induce phase separation. The domain sizes of macropores and skeletons can be controlled by reaction parameters such as concentration and/or average molecular weight of polymers, and the amount of hydrochloric acid. The crystalline metal oxide monoliths with their 3D interconnected macroporous structure preserved were obtained after heat treatment in air. |
| Related Links | https://academic.oup.com/nsr/article-pdf/7/11/1656/38880574/nwaa103.pdf |
| Ending Page | 1666 |
| Starting Page | 1656 |
| File Format | |
| ISSN | 20955138 |
| e-ISSN | 2053714X |
| DOI | 10.1093/nsr/nwaa103 |
| Journal | National Science Review |
| Issue Number | 11 |
| Volume Number | 7 |
| Language | English |
| Publisher | Oxford Academic |
| Publisher Date | 2020-11-13 |
| Access Restriction | Open |
| Subject Keyword | Medicine and Health Science and Mathematics Hierarchically Porous Monolith Low-valence Transition Metal Oxide 3d Interconnected Macropore Sol–gel Process Phase Separation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
