A New Type of Capping Agent in Nanoscience: Metal Cations

Jiawei Liu, Shaoyan Wang, Kai Cai, Yefei Li, Zhipan Liu, Lingmei Liu, Yu Han, Hong Wang, Heyou Han, Hongyu Chen

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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 Cu2 O octahedra, are demonstrated. This discovery broadens the view of capping agent and opens doors for nanosynthesis, surface treatment, and beyond.
Original languageEnglish (US)
Pages (from-to)1900444
Issue number18
StatePublished - Apr 4 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: H.C. acknowledges the financial support from MOE (RG 14/13) of Singapore, National Natural Science Foundation of China (No. 21673117), recruitment Program of Global Experts, Jiangsu Provincial Foundation for Specially-Appointed Professor, start-up fund at Nanjing Tech University (39837102), and SICAM Fellowship from Jiangsu National Synergetic Innovation Center for Advanced Materials. H.H. appreciates Science and Technology Major Project of Guangxi (Gui Ke AA18118046), National Key R&D Program of China (2016YFD0500706), National Natural Science Foundation of China (21778020), and Sci-tech Innovation Foundation of Huazhong Agriculture University (2662017PY042, 2662018PY024) for financial supports. J.L. thanks the support from China Scholarship Council (CSC) program (No. 201606760007).


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