Luo Wenpo, Taleb Abdelhafed
Institut de Recherche de Chimie Paris, PSL Research University Chimie ParisTech-CNRS, 75005 Paris, France.
Sorbonne Université, 75231 Paris, France.
Nanomaterials (Basel). 2021 Feb 1;11(2):365. doi: 10.3390/nano11020365.
TiO of controlled morphologies have been successfully prepared hydrothermally using TiO aggregates of different sizes. Different techniques were used to characterize the prepared TiO powder such as XRD, XPS, FEGSEM, EDS, and HRTEM. It was illustrated that the prepared TiO powders are of high crystallinity with different morphologies such as nanobelt, nanourchin, and nanotube depending on the synthesis conditions of temperature, time, and additives. The mechanism behind the formation of prepared morphologies is proposed involving nanosheet intermediate formation. Furthermore, it was found that the nanoparticle properties were governed by those of TiO nanoparticles aggregate used as a precursor. For example, the size of prepared nanobelts was proven to be influenced by the aggregates size used as a precursor for the synthesis.
利用不同尺寸的TiO聚集体，通过水热法成功制备了具有可控形貌的TiO。采用多种技术对制备的TiO粉末进行表征，如XRD、XPS、FEGSEM、EDS和HRTEM。结果表明，根据温度、时间和添加剂等合成条件，制备的TiO粉末具有高结晶度，呈现出纳米带、纳米海胆和纳米管等不同形貌。提出了所制备形貌形成背后的机制，涉及纳米片中间体的形成。此外，还发现纳米颗粒的性质受用作前驱体的TiO纳米颗粒聚集体的性质支配。例如，已证明制备的纳米带的尺寸受用作合成前驱体的聚集体尺寸的影响。
