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Cu 2 S/ZnS Heterostructured Nanorods: Cation Exchange vs. Solution–Liquid–Solid‐like Growth
Author(s) -
Zhai You,
Shim Moonsub
Publication year - 2016
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500859
Subject(s) - nanorod , catalysis , chemical engineering , ion exchange , ligand (biochemistry) , chemistry , nanotechnology , materials science , crystallography , ion , organic chemistry , receptor , biochemistry , engineering
Cu 2 S/ZnS heterostructured nanorods (HNRs) with uncommon morphologies are achieved through single‐pot and multi‐batch synthetic strategies. In both cases, Cu 2 S NRs form first, which then undergo partial cation exchange and solution–liquid–solid (SLS)‐like growth catalyzed by the remaining Cu 2 S parts of the NRs. The location and the volume of ZnS achieved through partial cation exchange control the size of the Cu 2 S catalysts, which in turn determine whether tapered rod–rod, body/tail, or barbell‐like structure results from subsequent SLS‐like growth. Concurrent cation exchange can sometimes cause Cu 2 S catalysts to be lost during SLS‐like growth, leading to further diversity in achievable morphologies of Cu 2 S/ZnS HNRs. Additional insights are gained on how parameters such as Zn precursor, ligand choice, and concentration alter cation exchange and SLS‐like growth steps.