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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.
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2012.06.021
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MSE Journal Articles

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