title: High symmetric 18-facet polyhedron nanocrystals of Cu7S4 with a hollow nanocage.
abstract: On the basis of Kirkendall Effect, high symmetric 18-facet polyhedral nanocrystals of Cu7S4 with a hollow nanocage could be converted from cubic nanocrystals of Cu2O in an aqueous media. The presence of organic additives makes the surface energy of {110} smaller than those of {100} and {111}. The growth of nanocrystals along the normal direction of highest energy surface {100} leads to the formation of a 18-facet polyhedron.
authors.affiliation: School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240, PR China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Cao
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Qian
authors.forename: Cheng
authors.initials: C
authors.lastname: Wang
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Ma
authors.forename: Jie
authors.initials: J
authors.lastname: Yin
authors.forename: Zikang
authors.initials: Z
authors.lastname: Zhu