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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
|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
|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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