摘要
利用超声化学的制备方法,获得类球形的三氧化钼纳米颗粒;并在相同化学反应条件下制备出未经过超声作用的MoO3颗粒。利用两种微粒的X射线衍射谱(XRD)、场发射扫描电镜(FE-SEM)对其形貌进行表征,观察到利用超声化学方法制备的纳米颗粒尺度小,颗粒形状呈类球形,未经过超声作用制备出的颗粒尺度较大,形状为不规则的块状;并对两种微粒的可见光吸收光谱(UV-vis)及光致变色的性质进行研究;经超声作用所获得溶液的光吸收比未经过超声作用所获得的溶液有显著增强。
The effect of ultrasound irradiation on molybdenum trioxide has been investigated. Under ultrasonic irradiation, spherical-like MoO3 nanoparticles were obtained, while bulk-like MoOa nanoparticles were prepared without ultrasonic irradiation. The changes in the physicochemical properties of MoO3 have been investigated using techniques such as X-ray power diffraction （XRD）, field emission scanning electron microscopy （FE-SEM） and ultraviolet and visible spectroscopy （UV-vis）. The physicochemical changes of MoO3 due to ultrasound irradiation have been attributed to the sonochemical cavity collapse onto molybdenum trioxide particles. The ultrasonically prepared particles can also greatly improve the photochromism efficiency.
出处
《黑龙江工程学院学报》
CAS
2009年第3期66-68,72,共4页
Journal of Heilongjiang Institute of Technology
