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We report the successful preparation of flower-like ZnO microstructures in one step by a simple, rapid and reliable ultrasound irradiation route, using only Zn(CH3COO)2 and NaOH as starting materials. The product was characterized by powder X-ray diffraction, energy-dispersive X-ray spectrometry, transmission electron microscopy and scanning electron microscopy. The UV–vis absorption and emission spectra, photocatalytic activity and electrochemical properties of the as-obtained flower-like ZnO microstructures were studied. [Copyright &y& Elsevier]

In the present work, we report the successful preparation of columnar hexagonal-shaped ZnO crystals in one step by a simple, rapid and reliable microwave irradiation route, using Zn(CH3COO)2, hexamethylenetetramine, acrylamide and 2,2′-azo-bis-iso-butyronitrile as the starting materials. The in situ produced polyacrylamide acted as the surfactant directing the growth of ZnO crystals. The photocatalytic activity and electrochemical properties of the as-obtained columnar hexagonal-shaped ZnO crystals were studied. [Copyright &y& Elsevier]

Two different morphologies of Co nanostructures, such as hollow nanotubes and nanowires composed of nanowhiskers, have been prepared in a controllable fashion by using a pore-wall modified alumina membrane and adjusting electrodeposition parameters. The mechanism of formation of the Co nanostructures was also discussed. [Copyright &y& Elsevier]