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A New Type of Capping Agent in Nanoscience: Metal Cations
Author(s) -
Liu Jiawei,
Wang Shaoyan,
Cai Kai,
Li Yefei,
Liu Zhipan,
Liu Lingmei,
Han Yu,
Wang Hong,
Han Heyou,
Chen Hongyu
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201900444
Subject(s) - nanotechnology , nanoparticle , materials science , oxide , metal , octahedron , colloid , nanocrystal , facet (psychology) , chemistry , ion , organic chemistry , metallurgy , social psychology , psychology , personality , big five personality traits
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 Al 3+ ions in the growth and ripening of Cu 2 O octahedra, are demonstrated. This discovery broadens the view of capping agent and opens doors for nanosynthesis, surface treatment, and beyond.