A change in morphology from anatase-TiO2 nanoparticles to anatase-TiO2 nanoflakes via electrospray

作者：An HyeLan; Ahn Hyo Jin^*

来源：Materials Letters, 2012, 81: 41-44.

DOI：10.1016/j.matlet.2012.04.143

• Anatase-TiO2
• Nanoparticles
• Nanoflakes
• Electrospray
• Morphology

The change in morphology from anatase-TiO2 nanoparticles to anatase-TiO2 nanoflakes was induced using an electrospray method. The morphological, structural, and chemical properties of all samples were investigated using field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM). X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). To control their morphologies, the relative humidity in a closed electrospray chamber was maintained at 35% 3%, 55% 3%, and 75% 3%. The different morphologies during the transformation from anatase-TiO2 nanoparticles to anatase-TiO2 nanoflakes were a result of the different relative humidities in the closed electrospray chamber. As a result, anatase-TiO2 nanoflakes were formed owing to the higher partial pressure of water in the atmosphere of the closed chamber and the slower solidification process of the charged jet.

• 出版日期2012-8-15