Abstract
Twinned-hemisphere-like CuO architectures with sizes ranging from 2 to 2.5 μm have been successfully prepared via a simple hydrophilic polymer-assisted hydrothermal route. The morphology of CuO is greatly affected by the mass ratio of Cu(CH3COO)2·H2O : PSS and the quantities of NaF. The different morphological products, such as spheres, twinned-hemispheres and sheets, have been obtained by changing the reaction conditions, which have been discussed in detail in this paper. The as-obtained products were characterized by SEM, XRD, FT-IR and BET. The adsorption capacity of the twinned-hemisphere product was detected by UV–vis spectroscopy. It was found that the as-obtained CuO twinned-hemispheres show high selectivity and short removal times to separate dyes from wastewater with a low cost and no secondary pollution.
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