ZnO nanorods were successfully synthesized by thermal decomposition of Zn（OH）2 in the ionic （liquid） 1-butyl-3-ethylimidazolium tetrafluoroborate, and the growth mechanism of ZnO micro-crystallites was presumed. T...ZnO nanorods were successfully synthesized by thermal decomposition of Zn（OH）2 in the ionic （liquid） 1-butyl-3-ethylimidazolium tetrafluoroborate, and the growth mechanism of ZnO micro-crystallites was presumed. Their structure and morphology were characterized by means of transmission electron microscopy（TEM）, infrared spectroscopy（IR）, and X-ray powder diffraction（XRD）. The TEM results （indicate） that the diameters and lengths of the ZnO nanorods were ca. 25 nm and ca. 150 nm, respectively. The IR spectra show that the ZnO nanorods were modified by 1-butyl-3-ethylimidazolium tetrafluoroborate. The XRD pattern reveals that the prepared ZnO nanorods belong to the hexagonal crystal system. The above-mentioned results indicate that ionic liquid can not only act as a reaction medium but also modify ZnO nanorods in the reaction.展开更多
By using ZnSO47H2O and NaOH as raw materials, C18H29NaO3S (DBS) as assistant, ZnO nanorods were synthesized directly in aqueous solution at low-temperature. TG-DSC, XRD, TEM and HRTEM results show that the crystal pha...By using ZnSO47H2O and NaOH as raw materials, C18H29NaO3S (DBS) as assistant, ZnO nanorods were synthesized directly in aqueous solution at low-temperature. TG-DSC, XRD, TEM and HRTEM results show that the crystal phase of the as-prepared ZnO nanorods has a hexagonal wurtzite structure with diameter from 30 to 50 nm and length up to 500 nm. The crystals grow along [001] direction. The mechanism for the ZnO nanorods growth was also discussed.展开更多
Well oriented ZnO nanorod array films were prepared by a low cost and low temperature hydrothermal approach. The wettability of the films were studied. The films treated with octadecanethiol(ODT) possess super hydroph...Well oriented ZnO nanorod array films were prepared by a low cost and low temperature hydrothermal approach. The wettability of the films were studied. The films treated with octadecanethiol(ODT) possess super hydrophobic properties. The static contact angle for water of the ODT modified films is 155.3°±2.3°, and the advancing and receding angles are 156.5°±1.9° and 150.3°±2.8°, respectively. It is believed that the super hydrophobic property of the ZnO nanorod array films is mainly caused by the nanostructures of the films and the modification of ODT adsorption layer on ZnO surfaces.展开更多
文摘ZnO nanorods were successfully synthesized by thermal decomposition of Zn（OH）2 in the ionic （liquid） 1-butyl-3-ethylimidazolium tetrafluoroborate, and the growth mechanism of ZnO micro-crystallites was presumed. Their structure and morphology were characterized by means of transmission electron microscopy（TEM）, infrared spectroscopy（IR）, and X-ray powder diffraction（XRD）. The TEM results （indicate） that the diameters and lengths of the ZnO nanorods were ca. 25 nm and ca. 150 nm, respectively. The IR spectra show that the ZnO nanorods were modified by 1-butyl-3-ethylimidazolium tetrafluoroborate. The XRD pattern reveals that the prepared ZnO nanorods belong to the hexagonal crystal system. The above-mentioned results indicate that ionic liquid can not only act as a reaction medium but also modify ZnO nanorods in the reaction.
文摘By using ZnSO47H2O and NaOH as raw materials, C18H29NaO3S (DBS) as assistant, ZnO nanorods were synthesized directly in aqueous solution at low-temperature. TG-DSC, XRD, TEM and HRTEM results show that the crystal phase of the as-prepared ZnO nanorods has a hexagonal wurtzite structure with diameter from 30 to 50 nm and length up to 500 nm. The crystals grow along [001] direction. The mechanism for the ZnO nanorods growth was also discussed.
文摘Well oriented ZnO nanorod array films were prepared by a low cost and low temperature hydrothermal approach. The wettability of the films were studied. The films treated with octadecanethiol(ODT) possess super hydrophobic properties. The static contact angle for water of the ODT modified films is 155.3°±2.3°, and the advancing and receding angles are 156.5°±1.9° and 150.3°±2.8°, respectively. It is believed that the super hydrophobic property of the ZnO nanorod array films is mainly caused by the nanostructures of the films and the modification of ODT adsorption layer on ZnO surfaces.
