Journal
ADVANCED MATERIALS
Volume 30, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201704416
Keywords
autoredox reactions; CeO2; core-shell; nitrobenzene; yolk-shell
Categories
Funding
- National Natural Science Foundation of China [51372242, 21590794, 21210001, 21771173, 21521092]
- National Key Basic Research Program of China [2014CB643802]
- Youth Innovation Promotion Association of Chinese Academy of Sciences [2011176]
- Chinese Academy of Sciences-Commonwealth Scientific and Industrial Research Organization (CAS-CSIRO) [GJHZ1730]
Ask authors/readers for more resources
Due to the obvious distinctions in structure, core-shell nanostructures (CSNs) and yolk-shell nanostructures (YSNs) exhibit different catalytic behavior for specific organic reactions. In this work, two unique autoredox routes are developed to the fabrication of CeO2-encapsulated Au nanocatalysts. Route A is the synthesis of well-defined CSNs by a one-step redox reaction. The process involves an interesting phenomenon in which Ce3+ can act as a weak acid to inhibit the hydrolysis of Ce4+ under the condition of OH- shortage. Route B is the fabrication of monodispersed YSNs by a two-step redox reaction with amorphous Co3O4 as an in situ template. Furthermore, the transfer coupling of nitrobenzene is chosen as a probe reaction to investigate their catalytic difference. The CSNs can gradually achieve the conversion of nitrobenzene into azoxybenzene, while the YSNs can rapidly convert nitrobenzene into azobenzene. The different catalytic results are mainly attributed to their structural distinctions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available