Yolk-shell hybrid materials with a periodic mesoporous organosilica shell: ideal nanoreactors for selective alcohol oxidation
Article
Article Title | Yolk-shell hybrid materials with a periodic mesoporous organosilica shell: ideal nanoreactors for selective alcohol oxidation |
---|---|
ERA Journal ID | 1397 |
Article Category | Article |
Authors | Liu, Jian (Author), Yang, Heng Quan (Author), Kleitz, Freddy (Author), Chen, Zhi Gang (Author), Yang, Tianyu (Author), Strounina, Ekaterina (Author), Lu, Gao Qing (Max) (Author) and Qiao, Shi Zhang (Author) |
Journal Title | Advanced Functional Materials |
Journal Citation | 22 (3), pp. 591-599 |
Number of Pages | 9 |
Year | 2012 |
Publisher | John Wiley & Sons |
Place of Publication | Germany |
ISSN | 1616-301X |
1616-3028 | |
Digital Object Identifier (DOI) | https://doi.org/10.1002/adfm.201101900 |
Web Address (URL) | http://onlinelibrary.wiley.com/doi/10.1002/adfm.201101900/epdf |
Abstract | This contribution describes the preparation of multifunctional yolk-shell nanoparticles (YSNs) consisting of a core of silica spheres and an outer shell based on periodic mesoporous organosilica (PMO) with perpendicularly aligned mesoporous channels. The new yolk-shell hybrid materials were synthesised through a dual mesophase and vesicle soft templating method. The mesostructure of the shell, the dimension of the hollow space (4∼52 nm), and the shell thickness (16∼34 nm) could be adjusted by precise tuning of the synthesis parameters, as evidenced by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen sorption investigations. Various metal nanoparticles (e.g., Au, Pt, and Pd) were encapsulated and confined in the void space between the core and the shell using impregnation and reduction of adequate metal precursors. The selective oxidation of various alcohol substrates was then carried out to illustrate the benefits of such an architecture in catalysis. High conversion (∼100%) and excellent selectivity (∼99%) were obtained over Pd nanoparticles encapsulated in the hybrid PMO yolk-shell structures. |
Keywords | hybrid materials; nanoreactors; periodic mesoporous organosilica; selective oxidation; yolk-shell particles; alcohol oxidation; hollow spaces; mesophases; mesoporous; mesostructures; metal nanoparticles; metal precursor; nitrogen sorption; outer shells; PD nano particle; periodic mesoporous organosilicas; selective oxidation; shell thickness; silica sphere; synthesis parameters; templating method; void space; chemical reactions; chemical operations; ceramics, refractories and glass; physical properties of gases, liquids and solids; atomic and molecular physics; solid state physics; crystal lattice; nanotechnology; structural members and shapes; metals, plastics, wood and other structural materials; biomedical equipment; precious metals; electric and magnetic materials; electronic and thermionic materials; optical devices and systems |
ANZSRC Field of Research 2020 | 340399. Macromolecular and materials chemistry not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Queensland |
Shanxi University, China | |
Laval University, Canada | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q418v/yolk-shell-hybrid-materials-with-a-periodic-mesoporous-organosilica-shell-ideal-nanoreactors-for-selective-alcohol-oxidation
1208
total views7
total downloads0
views this month0
downloads this month