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https://hdl.handle.net/10356/96506
Title: | Facile hydrothermal synthesis of novel Cu2O core-shell nanospheres via a template-free route | Authors: | Zhang, Huijuan Wong, C. Cheong Cui, Yuchi |
Issue Date: | 2012 | Source: | Cui, Y., Zhang, H., & Wong, C. C. (2012). Facile hydrothermal synthesis of novel Cu2O core-shell nanospheres via a template-free route. Materials Letters, 86, 104-107. | Series/Report no.: | Materials letters | Abstract: | Novel cuprous oxide Cu2O core-shell nanospheres with diameter around 445 nm have been successfully fabricated by a facile, one-pot and template-free route. The synthesis of these nanospheres is accomplished through a hydrothermal reaction of cupric acetate with o-anisidine as the reducing agent. Based on the structural and compositional evolution, the process mechanism was proposed to initiate with the formation of intermediate non-crystalline nanospheres. Subsequent reductive conversion of these intermediates to CuO/Cu2O nanocrystallite aggregates is followed by a spontaneous hollowing process in which core-shell nanospheres form by inside-out Ostwald ripening. The phase purity of the Cu2O can be improved by prolonging the aging time or increasing the starting concentration of o-anisidine. These Cu2O nanospheres have an absorption band within the visible range with a peak at 470 nm and may be potentially applicable for solar energy conversion. | URI: | https://hdl.handle.net/10356/96506 http://hdl.handle.net/10220/17275 |
ISSN: | 0167-577X | DOI: | 10.1016/j.matlet.2012.06.021 | Schools: | School of Materials Science & Engineering | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MSE Journal Articles |
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