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One-pot sonochemical fabrication of hierarchical hollow CuO submicrospheres by Chonghai Deng; Hanmei Hu; Xinqing Ge; Chengliang Han; Difang Zhao; Guoquan Shao is a Engineering article available to read on EtoBox.

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Hierarchical hollow CuO submicrospheres have been fabricated on a large scale by a facile one-pot sonochemical process in the absence of surfactants and additives. The as-prepared products were investigated by XRD, FESEM, EDX, TEM, SAED, HRTEM and BET nitrogen adsorption-desorption isotherms. The results reveal that hollow pumpkin-shaped structures possess a monoclinic phase CuO with the diameters ranging from 400 to 500 nm, and their walls with around 45 nm in thickness are composed of numerous single crystalline CuO nanoribbons with a width of about 8 nm. The BET specific surface area of the assynthesized CuO hollow structures was measured to be 59.60 m 2 /g, and the single point adsorption total pore volume was measured to be 0.1036 cm 3 /g. A possible growth mechanism for the formation of hierarchical hollow CuO structures was proposed, which is considered to be a sonohydrolysis -oriented aggregation -Ostwald ripening process. The novel hollow CuO spherical structures may utilize applications in biosensors, photonics, electronics, and catalysts.

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Author

Chonghai Deng; Hanmei Hu; Xinqing Ge; Chengliang Han; Difang Zhao; Guoquan Shao

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1350-4177)

Published

2011

Language

EN

Field

Engineering (Physical Sciences)