Journal
SMALL
Volume 15, Issue 18, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201900444
Keywords
aluminium ion; capping agent; cuprous oxide; facet control; metal cations
Categories
Funding
- MOE of Singapore [RG 14/13]
- National Natural Science Foundation of China [21673117, 21778020]
- Nanjing Tech University [39837102]
- SICAM Fellowship from Jiangsu National Synergetic Innovation Center for Advanced Materials
- Science and Technology Major Project of Guangxi [Gui Ke AA18118046]
- National Key R&D Program of China [2016YFD0500706]
- Sci-tech Innovation Foundation of Huazhong Agriculture University [2662017PY042, 2662018PY024]
- China Scholarship Council (CSC) program [201606760007]
- recruitment Program of Global Experts
- Jiangsu Provincial Foundation for Specially-Appointed Professor
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Capping agents are the essential factor in nanoscience and nanotechnology. However, the types of capping agents are greatly limited. Defying conventional beliefs, here is shown that metal cations can also be considered as capping agents for oxide nanoparticles, particularly in maintaining their colloidal stability and controlling their facets. Here the general stabilizing effects of multivalent cations for oxide nanoparticles, and the facet controlling role of Al3+ ions in the growth and ripening of Cu2O octahedra, are demonstrated. This discovery broadens the view of capping agent and opens doors for nanosynthesis, surface treatment, and beyond.
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